JKPK (Jurnal Kimia dan Pendidikan Kimia)最新文献_第9页

Synthesis of Core-Shell Fe3O4/C18/SiO2/[3 (2-Aminoethyl amino) propyl] Trimethoxy Silane and The Study of The Adsorption Kinetics Model of Cu2+ and Cr6+ Ions Fe3O4/C18/SiO2/[3(2-氨基乙基氨基)丙基]三甲氧基硅烷的合成及其对Cu2+和Cr6+离子的吸附动力学模型研究

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2020-08-26 DOI: 10.20961/JKPK.V5I2.37820

M. Syukur, A. F. Masduqi

{"title":"Synthesis of Core-Shell Fe3O4/C18/SiO2/[3 (2-Aminoethyl amino) propyl] Trimethoxy Silane and The Study of The Adsorption Kinetics Model of Cu2+ and Cr6+ Ions","authors":"M. Syukur, A. F. Masduqi","doi":"10.20961/JKPK.V5I2.37820","DOIUrl":"https://doi.org/10.20961/JKPK.V5I2.37820","url":null,"abstract":"Synthesis of Core-Shell Fe3O4/C18/SiO2/[3 (2-Aminoetil amino) propyl] Trimethoxy silane has been conducted to study its adsorption kinetics of Cu2+ and Cr6+ ions. Fe3O4 synthesis was carried out to form cores that have magnetic properties. The aim of the coating C18/SiO2/[3(2-Aminoetilamino) propyl] trimethoxy silane was to protect these cores from physical degradation due to acids and bases, as well as the application of synthetic materials. The sono-coprecipitation method showed good results under N2 gas flow with the results of black crystals. The success of SiO2 and [3(2-Aminoethylamino) propyl coatings the transformation of the color showed Trimethoxy silane into brown and weight gain of the synthesis result. Analysis of XRD data showed that little Fe2O3 impurities were clarified by FTIR data showing the presence of amine groups from the starting material. The SEM-EDX and TEM showed a spherical shape with a core-shell system. The adsorption kinetics model was studied using two kinetics models for Cu2+ and Cr6+ ions. The results were demonstrated by the suitability of Cu adsorption to the pseudo order 1, with an adsorption rate of 0.0333 min-1, whereas for Cr corresponded to pseudo order 2 with an adsorption rate of 0.00536 gmM-1min-1.","PeriodicalId":394335,"journal":{"name":"JKPK (Jurnal Kimia dan Pendidikan Kimia)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127193641","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}

引用次数: 0

The Comparison of Spectrophotometric and TLC-Densitometric for DPPH Radical Scavenging Activity Analysis of Three Medicinal Plant Extracts 分光光度法与tlc -密度法对三种药用植物提取物DPPH自由基清除活性的比较

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2020-08-26 DOI: 10.20961/JKPK.V5I2.40370

B. Cahyono, Christina Setyadewi M., M. Suzery, A. L. Aminin

{"title":"The Comparison of Spectrophotometric and TLC-Densitometric for DPPH Radical Scavenging Activity Analysis of Three Medicinal Plant Extracts","authors":"B. Cahyono, Christina Setyadewi M., M. Suzery, A. L. Aminin","doi":"10.20961/JKPK.V5I2.40370","DOIUrl":"https://doi.org/10.20961/JKPK.V5I2.40370","url":null,"abstract":"In this research, Thin Layer Chromatography-Densitometry has proven to be a good method for analyzing 1, 1 diphenyl 2-picrylhydrazyl (DPPH) radical scavenging activity, since this approach displayed the similar trends with UV-Vis spectrophotometric method. Three medicinal plants collected from Semarang used to evaluate both methods. The IC50 value ranged from 25.26 - 4913.74 ppm shown by UV-Vis spectrophotometric and 24.74 – 4674.61 ppm using TLC-Densitometric. Meniran Dechlorophyllated (Phyllanthus niruri) provides the strongest antioxidant activity and the weakest de-chlorophylated parsley (Petroselinum crispum). The paired sample t-test points from a non-dechlorophylation extract using the TLC densitometry test significantly gives a lower IC50 value than the UV spectrophotometry method-has. The maximum increase of peak area under the UV light 365 nm up to 56.08 %. This evidence supports the presumption that the scavenging radical DPPH caused not only decreasing the maximum absorbance under UV light 516 nm but also increasing the absorbance under UV light ± 365 nm.","PeriodicalId":394335,"journal":{"name":"JKPK (Jurnal Kimia dan Pendidikan Kimia)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124623764","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}

引用次数: 3

The Effect of Bilimbi Juice Levels and Soaking Time on The Growth of Aspergillus flavus, L. in Corn Kernels 枸杞汁浓度和浸泡时间对玉米黄曲霉生长的影响

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2020-08-26 DOI: 10.20961/JKPK.V5I2.21362

Jatmiko Susilo, Agitya Resti Erwinarti, Zaira Ri Apriarti

引用次数: 0

The Antimicrobial and Antioxidant Activity of Endophytic Fungi Extract Associated with Chlorantus officinalis Blume and Staurogyne elongata Kuntze 绿藻和长尾藻内生真菌提取物的抑菌和抗氧化活性研究

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2020-08-26 DOI: 10.20961/JKPK.V5I2.41617

L. Oktavia, Evana Evana, M. Ilyas, A. Agusta

{"title":"The Antimicrobial and Antioxidant Activity of Endophytic Fungi Extract Associated with Chlorantus officinalis Blume and Staurogyne elongata Kuntze","authors":"L. Oktavia, Evana Evana, M. Ilyas, A. Agusta","doi":"10.20961/JKPK.V5I2.41617","DOIUrl":"https://doi.org/10.20961/JKPK.V5I2.41617","url":null,"abstract":"An endophytic fungi has been widely known for a source of bioactive compounds attributed as antimicrobial and antioxidant. In this report, we investigated the antimicrobial and antioxidant activity of extract of endophytic fungi associated with two indigenous Indonesian medicinal plants, i.e., Chloranthus officinalis (CO) and Staurogyne elongata (SE). Ten endophytic fungi isolates were collected from barks, roots, and leaves of CO and SE host plants and were cultured into potato dextrose broth (PDB) media. After 14 days of incubation, the whole culture was extracted by ethyl acetate. The qualitative antimicrobial analysis that was conducted by dot blot and TLC-bioautography showed all of the extracts show antimicrobial activity against Staphylococcus aureus. At the same time, they were observed less active against Escherichia coli. The minimum inhibitory concentration (MIC) analysis showed that endophytic fungi extract of CO2 and SE3 are classified as strong antibacterial activity against S. aureus with MIC value <8 µg/ml. The TLC bioautography of antioxidant displayed the appearance of radical inhibition area from SE4 and SE5 extract. Quantitative antioxidant activity, which was conducted by the radical DPPH scavenging, showed that SE5 has the lowest IC50 value, i.e., 56.3679 µg/ml (AAI value 0.5455) and was classified as moderate antioxidant activity. Meanwhile, the remaining extracts are classified as weak antioxidant activity.","PeriodicalId":394335,"journal":{"name":"JKPK (Jurnal Kimia dan Pendidikan Kimia)","volume":"103 11S 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115733845","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}

引用次数: 2

Back Matter 回到问题

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2020-04-30 DOI: 10.20961/jkpk.v5i1.42100

Back Matter

引用次数: 0

Synthesis of Nano Silver using Bioreductor of Tristaniopsis merguensis Leaf Extracts and Its Antibacterial Activity Test 用三叶青叶提取物生物载体合成纳米银及其抑菌活性试验

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2019-12-31 DOI: 10.20961/jkpk.v4i3.34617

V. Fabiani, M. A. Putri, Marhan Ebit Saputra, Della Puspita Indriyani

引用次数: 1

Decoction as an Alternative to Producing Indigo Tarum Areuy (Marsdenia tinctoria) Dyes and Its Role on Fiber Coloration from Cellulose 水煎法制备靛蓝染料及其对纤维素纤维着色的影响

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2019-08-31 DOI: 10.20961/JKPK.V4I2.29866

I. N. Mauliza, Vita Permata Putri

{"title":"Decoction as an Alternative to Producing Indigo Tarum Areuy (Marsdenia tinctoria) Dyes and Its Role on Fiber Coloration from Cellulose","authors":"I. N. Mauliza, Vita Permata Putri","doi":"10.20961/JKPK.V4I2.29866","DOIUrl":"https://doi.org/10.20961/JKPK.V4I2.29866","url":null,"abstract":"Indigo natural dyes are generally made by maceration-fermentation for 24 - 72 hours impacting on productivity. A faster extraction method is needed by decoction methods. The faster production of indigo tarum areuy dyes is done by decoction at temperatures of 60ºC, 70ºC and 80ºC for 5 minutes, 10 minutes and 15 minutes. The extract was adjusted to reach pH 11. Aeration was carried out 30 minutes and then deposited for 24 hours. Indigo dyes are determined yield, purity of indigo, and evaluation of the quality of the staining results using spectrophotometric methods and color fastness testing of washing. Increased yield of indigo dyes occurs at temperatures of 60ºC and 70ºC. At 80ºC, the yield decreases with increasing decoction time. The best temperature and decoction time for pure indigo yield and the quality of the dyeing results in cotton were at 70ºC for 15 minutes with a yield of 3.625 grams per 500 grams of leaves. The dyeing color of the cotton fabric has increased along with the increase in yield and the purity of the dye. The highest color determination is achieved by a cloth dyed by indigo dyes from the decoction process at 70ºC for 15 minutes, with a K / S value of 3.8754. The extraction time and temperature did not affect the washing fastness.","PeriodicalId":394335,"journal":{"name":"JKPK (Jurnal Kimia dan Pendidikan Kimia)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131713900","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}

引用次数: 0

Effect of Heating on the Pretreatment Process for Recycling Li-Ion Battery Cathode 加热对锂离子电池正极回收预处理工艺的影响

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2019-08-31 DOI: 10.20961/JKPK.V4I2.29906

S. U. Muzayanha, C. Yudha, L. Hasanah, A. Nur, A. Purwanto

{"title":"Effect of Heating on the Pretreatment Process for Recycling Li-Ion Battery Cathode","authors":"S. U. Muzayanha, C. Yudha, L. Hasanah, A. Nur, A. Purwanto","doi":"10.20961/JKPK.V4I2.29906","DOIUrl":"https://doi.org/10.20961/JKPK.V4I2.29906","url":null,"abstract":"The use of Li-ion batteries has increased with the increasing of portable electronic media. Li-ion batteries have a life cycle hence a recycling process is needed in order to reduce the potential hazard of waste while increasing the economic value of unused battery material, especially its cathode active material. This study used Lithium Nickel Cobalt Oxide (NCA) cathode scrap to be regenerated which NCA material has high energy density and high capacity. The pretreatment process is one of the determinants in the subsequent recycling process. In this study, the effect of heating on the pretreatment process was carried out with variation temperatures of 500-8000C to obtain powder which will be recycled. The combination process of the leaching and co-precipitation was used to regenerate the cathode active material. Atomic Absorption Spectrophotometry (AAS) was performed to determine leaching efficiency using 4M H2SO4 at 400C for 3 hours. X-ray Diffraction (XRD) analysis showed that NCA material has been successfully regenerated which the diffraction peaks of NCA material was in accordance with JCPDS standards. The morphology of NCA material was tested using Scanning Electron Microscopy (SEM). Electrochemical testing uses a cylindrical battery at 2.7-4.2 Volt which the initial specific discharge capacity of the power is 62.13 mAh / g.","PeriodicalId":394335,"journal":{"name":"JKPK (Jurnal Kimia dan Pendidikan Kimia)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122093133","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}

引用次数: 6

Quality and Detergency Optimization, Liquid Detergent Preparation, Mahogany Seed Extract (Swietenia mahagoni) 质量和去污力优化，液体洗涤剂制备，红木籽提取物(swetenia mahagoni)

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2019-08-31 DOI: 10.20961/JKPK.V4I2.32750

M. Yuliyanti, Vinsensius Maunia Singgih Husada, Halida Anwar Alzundi Fahrudi, W. A. E. Setyowati

{"title":"Quality and Detergency Optimization, Liquid Detergent Preparation, Mahogany Seed Extract (Swietenia mahagoni)","authors":"M. Yuliyanti, Vinsensius Maunia Singgih Husada, Halida Anwar Alzundi Fahrudi, W. A. E. Setyowati","doi":"10.20961/JKPK.V4I2.32750","DOIUrl":"https://doi.org/10.20961/JKPK.V4I2.32750","url":null,"abstract":"The use of Linear Alkylbenzene Sulfonate(LAS) as a surfactant for making detergent can pollute aquatic ecosystem and agricultural soils. Mahogany seed extract can be used as a substitute for LAS because it contains saponin so that it can be used also as a foaming agent to remove dirt on clothes. This research aims to know the optimum liquid detergent formula seen from its suitability with SNI 06-4075-1996 about Liquid Washing Detergents, foam stability and detergency power. The research steps are (1) Making simplicia (2) Extracting mahogany seeds with ethanol solvent (3) Identification of saponin (4) Making liquid detergent preparations (5) Quality test, foam stability test and detergency power. The results showed that formula 2 with a ratio of mahogany seed extract : LAS is 2 : 1 is the most optimum formula because it appropiate with SNI, and has the best foam stability and detergency power. Formula 2 has pH 11.1; specific gravity 1.1; 0.1% free alkaline, foam stability of 70% and detergency without rinsing 91.53% and by rinsing 94.680%. ","PeriodicalId":394335,"journal":{"name":"JKPK (Jurnal Kimia dan Pendidikan Kimia)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131070845","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}

引用次数: 4

Identification of Students Misconception Using Two-Tier Diagnostic Test Completed with Certainty of Response Index (CRI) on Topic Partial Salt Hydrolysis 用反应指数确定性(CRI)完成的二级诊断测试识别学生对部分盐水解题目的误解

JKPK (Jurnal Kimia dan Pendidikan Kimia) Pub Date : 2019-08-31 DOI: 10.20961/JKPK.V4I2.34235

Tomas Istantyo Putro, S. Ariani, S. Yamtinah

引用次数: 2