Journal of Aceh Physics Society最新文献

{"title":"Preparation of Precipitated Calcium Carbonate (PCC) from Shells through Dissolution, Carbonation, and Sonication","authors":"Leny Yuliatun, Eko Sri Kunarti, Widjijono Widjijono, Nuryono Nuryono","doi":"10.24815/jacps.v12i1.29095","DOIUrl":"https://doi.org/10.24815/jacps.v12i1.29095","url":null,"abstract":"Abstrak. Penelitian ini bertujuan untuk membuat kalsium karbonat terendapkan atau precipitated calcium carbonate (PCC) dari cangkang kerang mutiara melalui pelarutan dengan larutan HNO3, karbonasi dengan karbondioksida, dan sonikasi. Cangkang kerang dengan ukuran 200 mesh dikalsinasi 900ºC selama 3 jam, dilarutkan dalam larutan asam nitrat 0,8 M dan ditambahkan ammonia sebagai pembentuk suasana basa. Selanjutnya dialiri gas CO2 (karbonasi) selama 30 menit dan dilanjutkan sonikasi selama 30 menit. Endapan yang terbentuk setelah pencucian berwarna putih dengan presentase CaO mencapai 98,36%. Persentase tersebut lebih tinggi dibanding CaO pada cangkang kerang sebelum dimurnikan. PCC yang berhasil diekstraksi mempunyai fase kristal kalsit (2θ) 29,3, 35,88, dan 39,4° dan vaterit (2θ) 24,8˚, 27,0˚, 32,7˚, 43,8˚ dan 55,7˚. Fase kristal kalsit dan vaterit juga dapat dilihat dari citra SEM yang menunjukkan bentuk kubus (kalsit) dan bulat (vaterit). Hasil FTIR menunjukkan bilangan gelombang 708, 748, 879, 1087, 1420, 1465 dan 1481,3 cm-1 merupakan identitas dari vibrasi gugus karbonat dari vaterit dan kalsit dalam PCC. Ukuran partikel dari PCC yang terbentuk adalah 2,434 µm. Berdasarkan hasil karakterisasi yang dilakukan, dapat disimpulkan bahwa PCC cangkang kerang telah berhasil dilakukan dan membentuk fase kristal kalsit dan vaterit. Abstract. This study aimed to prepare precipitated calcium carbonate (PCC) from pearl oyster shells by dissolving with HNO3 solution, carbonation with carbon dioxide, and sonication. Shells with a size of 200 mesh were calcined at 900 ºC for 3 hours, dissolved in 0.8 M nitric acid solution and added ammonia to form an alkaline medium. Then it was flowed with CO2 gas (carbonation) for 30 minutes and continued sonication for 30 minutes. The precipitate formed after washing is white with a CaO percentage of 98.36%. This percentage is higher than the CaO in clam shells before being purified. PCC that was successfully extracted had crystalline phases of calcite (2θ) 29.3, 35.88, and 39.4° and vaterite (2θ) 24.8˚, 27.0˚, 32.7˚, 43.8˚ and 55 ,7˚. The calcite and vaterite crystal phases can also be seen from the SEM images which show cubic (calcite) and spherical (vaterite) shapes. FTIR results show wave numbers 708, 748, 879, 1087, 1420, 1465 and 1481.3 cm-1 which are the identity of the vibration of the carbonate group of vaterite and calcite in PCC. The particle size of the formed PCC is 2.434 µm. Based on the results of the characterization carried out, it can be concluded that the PCC of the shells has been successfully carried out and formed calcite and vaterite crystal phases.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"255 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136377947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and operation of a turbidity filtration system and monitoring of wudhu spent water recycling using Internet of Things-based automatic pumps and faucets","authors":"Imam Isvahady, Neneng Fitrya, Shabri Putra Wirman","doi":"10.24815/jacps.v12i1.27790","DOIUrl":"https://doi.org/10.24815/jacps.v12i1.27790","url":null,"abstract":"Abstrak. Limbah air wudu menjadi limbah yang sangat melimpah di kehidupan sehari-hari, hal tersebut dikarenakan rutin nya kebutuhan berwudu untuk ibadah. Limbah air wudu yang terbuang tanpa dimanfaatkan dapat digunakan kembali tetapi harus melalui proses filtrasi terlebih dahulu, maka dari itu dibuatlah rancang bangun sistem monitoring daur ulang kualitas fisis limbah air wudu. Sistem ini sudah dilengkapi dengan filter, pompa otomatis, kran otomatis, dan sensor kekeruhan yang sudah berbasis Internet Of Things (IoT) yang bertujuan untuk memantau kondisi kualitas air dari jarak jauh. Kran otomatis akan terbuka apabila kadar kekeruhan limbah air wudu setelah di filter telah dibawah standar baku, dan pompa akan aktif apabila kadar kekeruhan masih di atas standar baku untuk mengalirkan limbah air wudu kembali mengalirkan ke ruang fiter. Filter dibuat dengan tiga lapisan yaitu karbon aktif, pasir silika, dan kerikil. Sensor kekeruhan yang digunakan adalah sensor turbidity dfrobot yang dikontrol oleh Arduino uno. Hasil yang dibaca oleh sensor akan ditampilkan melalui aplikasi telegram. Hasil yang didapat sensor turbidity memiliki akurasi yang baik karena memiliki rentang nilai eror kecil yaitu 1,1% - 1,5%. Abstract. Wudhu spent water becomes a very abundant waste in everyday life, this is because the routine needs of ablution for worship. Wudhu spent water that is wasted without being used can be reused but must go through a filtration process first, therefore a monitoring system for the physical quality of ablution water waste is designed. This system is equipped with filters, pumps, automatic faucets, and turbidity sensors based on the Internet of Things (IoT) which aims to monitor water quality conditions remotely. The faucet will automatically open if the turbidity level of the ablution water waste after being filtered is below the standard, and the pump will activate if the turbidity level is still above the standard to drain the ablution water waste back to the filter room. The turbidity sensor used is the dfrobot turbidity sensor. the results read by the sensor will be displayed via the telegram application. The results obtained by the Turbidity sensor have good accuracy because it has a small error value range of 1.1% - 1.5%.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136378139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance Analysis of Database Synchronization on DBMS MySQL and Oracle by Using Event-Driven and Time-Driven Data for Monitoring Weather","authors":"Nurhanif Nurhanif, Y. Away, M. S. Surbakti","doi":"10.24815/jacps.v10i4.20084","DOIUrl":"https://doi.org/10.24815/jacps.v10i4.20084","url":null,"abstract":"Abstrak. Data cuaca berupa suhu udara, kelembaban udara, curah hujan, dan kecepatan angin memerlukan proses penyimpanan yang baik supaya data cuaca dapat direkapitulasi selama satu tahun. Untuk itu membutuhkan proses penyimpanan data melalui Database Management System (DBMS). DBMS dapat mengelola, menyimpan sekumpulan data secara baik. Pengguna DBMS dapat membuat, mencari, memelihara, serta memiliki akses terkontrol terhadap data. Penyimpan data pada pemantauan cuaca menggunakan hardisk eksternal dalam format Comma Separated Values (CSV), penyimpanan data seperti ini kurang efisien diakibatkan data direkapitulasi secara manual ke dalam computer. Kinerja sinkronisasi database dianalisis menggunakan metode Event-Driven dan Time-Driven pada DBMS Oracle dan MySQL untuk pemantauan data cuaca. Hasilnya, pada saat proses penyimpanan 100 data (record), MySQL memiliki kemampuan yang lebih cepat yaitu 166 detik dibandingkan dengan Oracle dalam waktu eksekusi 188 detik. Pada saat proses penyimpanan mulai 200 sampai 1000 data (record) membutuhkan waktu eksekusi rata-rata pada Oracle yaitu 203,56 detik sedangkan pada MySQL waktu eksekusi rata-rata 1163,89 detik. Jadi, kinerja DBMS Oracle lebih baik dibandingkan dengan DBMS MySQL dalam proses penyimpanan data cuaca, namun DBMS Oracle belum bisa menyimpan data secara langsung dari mikrokontroler karena belum adanya program yang mendukung ke dalam DBMS Oracle. Abstract. Weather data in the form of air temperature, humidity, rainfall, and wind speed require a good storage process so that weather data can be recapitulated for one year. For this reason, it requires the process of storing data through a Database Management System (DBMS). DBMS can manage, store a collection of data well. DBMS users can create, search, maintain and have controlled access to data. Data storage in weather monitoring uses an external hard drive in Comma Separated Values (CSV) format, this kind of data storage is less efficient due to the data being recapitulated manually into a computer. Therefore, the author wants to analyze the performance of database synchronization on Oracle and MySQL DBMS by using Event-Driven and Time-Driven methods for monitoring weather data. As a result, when storing 100 data (records), MySQL has a faster capability of 166 seconds compared to Oracle in 188 seconds of execution time. When the storage process starts from 200 to 1000 data (records) the average execution time in Oracle is 203.56 seconds, while in MySQL the average execution time is 1163.89 seconds. So, the performance of the Oracle DBMS is better than the MySQL DBMS in the process of storing weather data, but the Oracle DBMS has not been able to store data directly from the microcontroller because no program supports it into the Oracle DBMS.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48853531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of Physical Properties for Activated Carbon from Garlic Skin","authors":"Miftah Ainul Mardiah, A. Awitdrus, R. Farma, E. Taer","doi":"10.24815/jacps.v10i4.19571","DOIUrl":"https://doi.org/10.24815/jacps.v10i4.19571","url":null,"abstract":"Abstrak. Karbon aktif yang berasal dari biomassa telah menjadi bahan material dasar yang sudah digunakan secara luas untuk berbagai aplikasi eperti penyerapan, absorben, elektroda, penyimpan energi, dan aplikasi lainnya. Oleh karena itu perlu untuk pengoptimalkan sumber mentah karbon aktif berbiaya rendah dan memiliki porositas yang tinggi.  Biomassa kulit bawang putih sebagai bahan dasar pembuatan karbon aktif melalui proses pra-karbonisasi, aktivasi kimia dengan aktivator KOH dan ZnCl2 dengan masing-masing kosentrasi sebesar 0,25 M, 0,5 M, dan 0,75 M dan tanpa aktivator kimia. Proses karbonisasi dengan suhu 600°C dialiri gas nitrogen dan diaktivasi fisika dengan suhu 850°C. Penyusutan massa karbon sebesar 29,4%. Nilai densitas dari elektroda karbon untuk aktivator KOH dengan kosentrasi 0,5M yaitu 0,64 g.cm-3dan untuk aktivator ZnCl2 dengan kosentrasi 0,5M yaitu 0,71 g.cm-3. Gugus fungsi yang dimiliki elektroda kulit bawang putih diidentifikasi sebagai C-C, C C (alkuna), C-H (alkana), dan (O-H) yaitu pada bilangan gelombang 1600 cm-1, 1500 cm-1, 2950 cm-1 dan 2900-3600 cm-1. Hasil penelitian menunjukkan bahwa pada aktivator KOH dan ZnCl2 dengan kosentrasi 0,5 M kondisi terbaik untuk variasi guna menunjang pengoptimalkan sumber mentah karbon aktif dan bisa digunakan dalam berbagai apliasi yang lebih luas. Abstract. Activated carbon derived from biomass has become a basic material that has been used widely for various applications such as absorption, absorbent, electrodes, energy storage, and other applications. Therefore, it is necessary to optimize the raw source of activated carbon which is low cost and has high porosity. Garlic skin biomass as a basic material for making activated carbon through a pre-carbonization process, chemical activation with KOH and ZnCl2 activators with concentrations of 0,25 M, 0,5 M, and 0,75 M respectively and without chemical activators. The carbonization process with a temperature of 600°C is flowed with nitrogen gas and is physically activated at a temperature of 850°C. Shrinkage of carbon by 29.4%. The density value of the carbon electrode for the KOH activator with a concentration of 0.5M is 0.64 g.cm-3 and for the ZnCl2 activator with a concentration of 0,5M is 0,71 g.cm-3. The functional groups possessed by the garlic skin electrode were identified as C-C, C = C (alkynes), C-H (alkanes), and (O-H), namely at the wave numbers 1600 cm-1, 1500 cm-1, 2950 cm-1 and 2900-3600 cm-1. The results showed that the KOH and ZnCl2 activators with a concentration of 0.5 M were the best conditions for variation in order to optimize the raw source of activated carbon and could be used in a wider variety of applications.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48404628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Cyclic Voltammetry dan Galvanostatic Charge Discharge Electrode Supercapacitor based on activated carbon from Kepok Banana Leaf (Musa balbisiana)","authors":"A. Apriwandi, E. Taer, R. Farma","doi":"10.24815/jacps.v10i4.19491","DOIUrl":"https://doi.org/10.24815/jacps.v10i4.19491","url":null,"abstract":"Abstrak. Teknologi penyimpan energi elektrokimia yang ramah lingkungan merupakan aspek yang penting dalam menunjang kinerja sistem konversi energi terbarukan. Studi ini menyiapkan elektroda superkapasitor berbahan asal karbon aktif berpori limbah daun pisang kepok. Sampel dipreparasi melalui impregnasi Natrium hidroksida pada konsentrasi 0,5 m/L dan dipirolisis satu tahap meliputi karbonisasi dan aktivasi fisika. Serbuk karbon yang dihasilkan dikonversi dalam bentuk pellet atau monolit dengan menggunakan hidraulik press tanpa adanya penambahan bahan perekat. Proses karbonisasi dilakukan dari suhu kamar hingga 600 °C pada lingkungan gas N2 sedangkan proses aktivasi fisika dilakukan dari suhu 600 °C hingga pada suhu tinggi dengan tiga jenis suhu yang berbeda meliputi 700 °C, 800 °C, dan 900 °C pada lingkungan gas CO2. Analisis densitas ditinjau sebagai evaluasi awal elektroda karbon berpori. Lebih lanjut, sifat elektrokimia superkapasitor dievaluasi melalui dua teknik yang berbeda meliputi teknik cyclic voltammetry (CV) dan galanostatic charge discharge (GCD) pada sistem dua elektroda dalam elektrolit 1 M H2SO4. Kapasitansi spesifik pada teknik CV adalah sebesar 142 F/g sedangkan dengan teknik GCD menghasilkan kapsitansi spesifik sebesar 154 F/g pada resistansi 42∙10-3Ω. Rapat daya dan rapat energi yang dihasilkan berturut-turut 20,45 Wh/kg dan 38,32 W/kg. Hasil ini mengkonfirmasi bahwa daun pisang berpotensi dijadikan sebagai karbon aktif berpori untuk material dasar elektroda superkapasitor.Abstract. Environmentally friendly electrochemical energy storage technology is an important aspect of supporting global energy fulfillment as a contribution to improving the performance of renewable energy conversion systems. Currently, supercapacitors are considered as a superior electrochemical energy storage technology compared to others. This study performed a supercapacitor with electrodes made from porous activated carbon based on biomass waste, especially banana leaf waste. The sample was prepared by sodium hydroxide impregnated at a concentration of 0.5 m/L dan one-step pyrolysis both carbonization dan physical activation. The carbon powder is converted into pellets or monoliths using a hydraulic press without the addition of any adhesive materials. The carbonization process is performed from room temperature to 600 °C in an N2 gas environment while the physical activation process is carried out from a temperature of 600 °C to a high temperature with three different types including 700 °C, 800 °C, dan 800 °C in CO2 gas atmosphere. Density analysis is reviewed as an initial evaluation of the porous carbon electrode. Furthermore, the electrochemical properties of the supercapacitor were evaluated through two different techniques including cyclic voltammetry (CV) dan galvanostatic charge-discharge (GCD) in a two-electrode system in 1 M H2SO4 electrolyte. The specific capacitance in the CV technique is 142 F/g while the GCD technique produces a specific c","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49081140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of uCT-scan and infrared spectroscopy for determination of urinary stone components","authors":"V. Asyana, L. A. Fitri, F. Haryanto, Taufik Ridwan, Nanda Fitri Ayu Muningrat","doi":"10.24815/jacps.v10i4.19114","DOIUrl":"https://doi.org/10.24815/jacps.v10i4.19114","url":null,"abstract":"Abstrak. Batu kemih merupakan salah satu penyakit dengan tingkat prevalensi yang cukup tinggi di Indonesia. Pengetahuan komposisi pada kandungan batu kemih dapat membantu tenaga medis dalam melakukan justifikasi penanganan tindakan lanjut pada pasien dengan tepat.Tujuan penelitian iniadalah menentukan kandungan mineral yang terdapat pada batu kemih menggunakan metode analisa spektrum inframerah dan nilai hounsfield unit (HU) yang terdapat pada citra yang dihasilkan dari modality mCT-Scan. Hasil karakterisasi fourier transform infrared spectroscopy (FTIR) memperlihatkan kandungan mineral batu kemih terdiri dari batu kemih calcium oxlate monohydrate, uric acid, batu campuran calcium oxalate dengan phosphate dan batu campuran cystine dengan phosphate sedangkan hasil dari scanning mCT memperlihatkan adanya kandungan mineral batu kemih campuran seperti batu campuran calcium oxalate dan cystine, batu campuran calcium oxalate, struvite, dan cystine, dan batu campuran calciumoxalate dan uric acid.Dari hasil penelitian ini dapat disimpulkan bahwa kedua modaliti tersebut mampu memperlihatkan kandungan mineral batu kemih dengan baik. Hal ini terlihat adanya spektrum serapan karakteristik dari FTIR setiap sampel berbeda-beda dan dari hasil citra mCT-Scan memperlihatkan nilai HU yang bervariasi sehingga mengindikasikan kandungan mineral pada sampel batu kemih yang diamati juga memiliki jenis yang berbeda-beda. Abstract. Urinary stones are a disease with a high prevalence rate in Indonesia. Knowledge of the composition of the urinary stone is an essential part to determine suitable treatments for patients. The aim of this research is to determine the mineral contained in urinary stones using the infrared spectrum and the value of HU (hounsfield unit) from the image mCT-Scan. The results of FTIR characterization showed that the mineral content of urinary stones consisted of calcium oxlate monohydrate, uric acid, calcium oxalate and phosphate mixed stones and cystine-phosphate mixed stones. mCT-Scan results showed the mineral content of urinary stones such as calcium oxalate and cystine mixed stone, calcium oxalate, struvite, and cystine mixed stones, and calcium oxalate and uric acid mixed stones. This show that the two modalities are be able to determine the mineral content of urinary stones. It can be seen that the characteristic absorption spectrum of the FTIR for each sample is different and from the mCT-Scan image results, the HU value varies so that it indicates the mineral content of the observed urine stone sample are different.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47420334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biosynthesis of ZnO Micro-Nanoflower with Ananas comosus Peel Extract","authors":"M. Sari, Y. Rati, T. Linda, Y. Hamzah, A. S. Rini","doi":"10.24815/jacps.v10i4.18951","DOIUrl":"https://doi.org/10.24815/jacps.v10i4.18951","url":null,"abstract":" Abstrak. Dalam rangka mengurangi pemakaian bahan kimia berbahaya, kini telah mulai dikembangkan penggunaan bahan alami pada proses pembentukan nanopartikel. Pada penelitian ini, biosintesis nanopartikel ZnO dilakukan menggunakan ekstrak kulit Ananas comosus sebagai agen capping sekaligus agen pereduksi. Seng nitrat digunakan sebagai prekursor dari ion seng, sedangkan kulit nanas dibuat menjadi ekstrak untuk dimanfaatkan kandungan antioksidannya. Sampel ZnO dipelajari sifat fisisnya dari hasil karakterisasi X-ray diffraction (XRD), scanning electron microscopy (SEM) dan spektroskopi UV-Vis. Berdasarkan pola XRD, nanopartikel ZnO memberikan fasa kristal heksagonal wurtzite dengan ukuran kristal 14 nm. Morfologi SEM masing-masing sampel didapatkan berbentuk bunga atau micro-nanoflower dengan ukuran diameter rata-rata 510 nm dan 560 nm untuk sampel 0,01 M dan 0,025 M. Hasil spektrum absorbansi UV-Vis menunjukkan peningkatan puncak penyerapan cahaya dengan penambahan konsentrasi seng nitrat. Berdasarkan informasi sifat fisis ini, sampel ZnO berpotensi diaplikasikan sebagai material fotokatalis.Abstract. In order to reduce the use of hazardous chemicals, the use of natural ingredients has now been developed in the process of forming nanoparticles. In this study, biosynthesis of ZnO nanoparticles was carried out using Ananas comosus peel extract as capping agent and reducing agent. Zinc nitrate was used as a precursor to zinc ion. The physical properties of ZnO samples were studied from the characterization result of scanning electron microscopy (SEM), UV-Vis spectroscopy, and X-ray diffraction (XRD). The SEM morphology of each different sample was obtained in the form of micro-nanoflower with an average diameter  of 510 nm and 560 nm for 0.01 M and 0.025 M samples, respectively. The UV-Vis absorbance spectrum results showed an increase in the light absorption peak as  zinc nitrate concentration increased. According to the XRD pattern, the ZnO nanoparticles possessed an hexagonal wurtzite crystal phase with a crystal size of 14 nm. Based on this information on physical properties, the ZnO sample has the potential to be applied as a photocatalyst material.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43538480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The production of supercapacitor carbon electrodes based on sugar palm fronds using chemical and physical activation combination","authors":"A. Awitdrus, Decha Apriliany Suwandi, A. Agustino, E. Taer, R. Farma","doi":"10.24815/jacps.v10i3.18517","DOIUrl":"https://doi.org/10.24815/jacps.v10i3.18517","url":null,"abstract":"Abstrak. Pembuatan elektroda karbon superkapasitor berbasis limbah pelepah aren dengan kombinasi pengaktifan kimia dan fisika telah berhasil dilakukan. Aktivasi kimia dilakukan dengan menggunakan agen pengaktif 0,3 M KOH dan aktivasi fisika menggunakan gas CO2 pada suhu 900oC selama 2,5 jam. Karakterisasi sifat fisis elektroda meliputi susut massa, tebal, diameter, densitas dan derajat kristalinitas. Karakterisasi sifat elektrokimia elektroda dilakukan dengan menggunakan metode siklis voltametri. Setelah proses karbonisasi-aktivasi fisika, massa, tebal, diameter dan densitas elektroda mengalami penurunan persentase masing-masing adalah 60,87; 30,43; 24,08 dan 5,71%. Elektroda PA-0,3 memiliki struktur semi kristalin, yang ditandai dengan adanya dua puncak yang lebar pada sudut hamburan sekitar 25o dan 46o. kapasitansi spesifik elektroda PA-0,3 berdasarkan variasi laju pemindaian  adalah 90 F g-1 untuk 1 mV s-1, 82 F g-1 untuk 2 mV s-1, dan 71 F g-1 untuk 5 mV s-1. Abstract. The production of supercapacitor carbon electrodes based on sugar palm frond waste using chemical and physical activation combinations have been successfully carried out. The chemical activation was carried out using 0.3 M KOH activating agent and the physical activation using CO2 gas at a temperature of 900oC for 2.5 h. Characterization of the physical properties of the electrodes includes mass loss, thickness, diameter, density and degree of crystallinity. The electrochemical properties characterization of the electrodes was carried out using the cyclic voltammetry method. After the carbonization-physical activation process, the mass, thickness, diameter, and density of the electrodes decreased in the percentage of 60.87, 30.43, 24.08, and 5.71%, respectively. The PA-0.3 electrode has a semi crystalline structure, which characterized by the presence of two broadening peaks at a scattering angle around of 25o and 46o. The specific capacitance of the PA-0.3 electrode based on the scan rate variations is 90 F g-1 for 1 mV s-1, 82 F g-1 for 2 mV s-1, and 71 F g-1 for 5 mV s-1.Keywords: Sugar palm fronds, Chemical activation, Physical activation, Carbon electrode, Supercapacitor ","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45116319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the size and composition of natural sand particles in the Rokan River Riau Province as a function of ball milling time","authors":"Salomo Sinuraya, E. Amiruddin, Lidia Wahyuni, Nita Jesika","doi":"10.24815/jacps.v10i3.18658","DOIUrl":"https://doi.org/10.24815/jacps.v10i3.18658","url":null,"abstract":"Abstrak. Pasir alam merupakan bahan alam yang berada ditepi pantai, sungai, maupun perbukitan. Pasir alam merupakan batuan sedimentasi yang mengandung berbagai unsur partikel magnetik dan partikel non-magnetik. Penelitian pasir alam sungai dilakukan dengan metode ball milling guna menghaluskan ukuran partikel. Sifat magnetik yang diuji dalam penelitian ini adalah nilai suseptibilitas magnetik, variasi ukuran dan komposisi partikel ditentukan terhadap sampel pasir alam sungai Rokan dan konsentrat hasil ball milling 60 jam dan 100 jam. Nilai suseptibilitas magnetik yang didapatkan berkisar (968,245-19471,568) ´10-5. Hasil pengujian Scanning Electron Microscope menunjukkan bahwa ukuran partikel yang disintesis oleh ball milling selama 60 jam dan 100 jam diperoleh masing-masing sebesar 107 nm dan 96 nm. Hasil identifikasi X-Ray Fluorescence menunjukkan bahwa komposisi Fe meningkat dari 1,669 menjadi 35,187%, sedangkan komposisi Si mengalami penurunan dari 84,391 menjadi 41,079% setelah di ball milling selama 100 jam. Abstract. Natural sand is a natural material that is on the edge of a beach, river or hills. Natural sand is a sedimentation rock containing various elements of magnetic particles and non-magnetic particles. Research of natural sand of the river is carried out by ball milling method to smooth particle size. The magnetic properties tested in the study were the magnetic susceptibility, size and composition of natural samples of Rokan river sand and concentrate 2 milled for 60 h and 100 h using ball milling were determined natural Magnetic susceptibility values are in the range of (968.245-19471.568)´10-5. Scanning Electron Microscope result showed that the size of magnetic particle synthesized by ball milling for 60 h and 100 h are 107 nm and 96 nm, respectively. X-Ray Fluorescence identification results showed that the composition of Fe increased from 1.669 to 35.187%, while the composition of Si decreased from 84.391 to 41.079% after being ball milling for 100 h.Keywords: Natural sand of Rokan river, ball milling, magnetic susceptibility, SEM, XRF ","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47259475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of activated carbon electrodes from date seeds with a variety of separators for supercapacitor cell applications","authors":"Desmagrini Desmagrini, A. Awitdrus, E. Taer, R. Farma","doi":"10.24815/JACPS.V10I3.18512","DOIUrl":"https://doi.org/10.24815/JACPS.V10I3.18512","url":null,"abstract":"Abstrak. Karbon aktif yang berasal dari biomassa telah menjadi bahan elektroda paling kompetitif untuk superkapasitor karena sifatnya yang terbarukan dan berkelanjutan. Upaya optimalisasi dilakukan untuk proses pembuatan sel superkapasitor dengan memvariasikan separator agar dapat memperoleh kapasitansi spesifik yang tinggi. Biomassa biji kurma sebagai bahan dasar pembuatan elektroda karbon melalui proses prakarbonisasi, aktivasi kimia dengan aktivator KOH 0,3M, proses karbonisasi dengan suhu 650oC dialiri gas nitrogen. Penyusutan massa karbon sebesar 24,59%. Nilai densitas dari elektroda karbon setelah dilakukan proses karbonisasi adalah 0,852 g cm-3. Analisis struktur mikro menunjukkan bahwa elektroda karbon bersifat amorf ditunjukkan dengan adanya puncak pada sudut 2θ sekitar 24o dan 44o. Kapasitansi spesifik ditentukan dengan metode Cyclic Voltametry dan didapati sebesar 217,22; 176,18; dan 82,8 F/g masing-masing untuk variasi separator kertas whatman, kertas saring, dan membran telur ayam. Hasil penelitian menunjukkan bahwa pada kertas whatman merupakan separator terbaik untuk elektroda karbon dari biji kurma. Oleh karena itu karbon aktif yang dibuat dari biji kurma dengan biaya rendah, ketersedian mudah, dan berkelanjutan dapat diaplikasikan sebagai bahan elektroda untuk superkapasitor.Abstract. Activated carbon derived from biomass has become the most competitive electrode material for supercapacitors due to its renewable and sustainable nature. Optimization efforts are made for the process of making supercapacitor cells by varying the separator in order to obtain a high specific capacitance. Date seed biomass as the basic material for making carbon electrodes through a pre-carbonization process, chemical activation with a KOH activator of 0.3M, the carbonization process at a temperature of 650oC flowed with nitrogen gas. Shrinkage of carbon by 24.59%. The density value of the carbon electrode that was carried out by the carbonization process was 0.852 g.cm-3. The microstructure analysis showed that the carbon electrode was amorphous indicated by the presence of a peak at an angle of 2θ around 24o and 44o. Specific capacitance was determined by the Cyclic Voltametry method and was found to be 217.22, 176.18, and 82.8 F/g respectively for the Whatman paper, filter paper, and chicken egg membrane separator variations. The results showed that whatman paper was the best separator for carbon electrodes from date palm seeds. Therefore, activated carbon made from date seeds with low cost, easy availability, and sustainability can be applied as an electrode material for supercapacitors.Keywords: Date seed, Activated Carbon, Supercapacitor, Carbon Electrode, Separator","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46525445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}