chemistry and materials research最新文献

Enhancing Antioxidant Activity of Curcumin Using ZnO Nanoparticles Synthesized by Electrodeposition Method 电沉积法制备氧化锌纳米颗粒增强姜黄素的抗氧化活性

chemistry and materials research Pub Date : 2023-10-31 DOI: 10.56425/cma.v2i3.68

Nisrina Fitri Nur Syamsi Fitri, None Alsifa Andita Putri, None Rachmaniah Nurul Imani, None Suci Putriyaningsih, None Devia Alventiana Sipayung, None Anis Sakinah

{"title":"Enhancing Antioxidant Activity of Curcumin Using ZnO Nanoparticles Synthesized by Electrodeposition Method","authors":"Nisrina Fitri Nur Syamsi Fitri, None Alsifa Andita Putri, None Rachmaniah Nurul Imani, None Suci Putriyaningsih, None Devia Alventiana Sipayung, None Anis Sakinah","doi":"10.56425/cma.v2i3.68","DOIUrl":"https://doi.org/10.56425/cma.v2i3.68","url":null,"abstract":"The objective of this study was to fabricate zinc oxide (ZnO) nanoparticles through the utilization of the electrodeposition technique, to employ them as a supportive medium for enhancing the antioxidant properties of curcumin. The study involved the synthesis of ZnO nanoparticles, which were subsequently subjected to characterization using X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). Additionally, the antioxidant activity of the synthesized nanoparticles was assessed through the use of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. In XRD analysis, a notable peak denoted by an asterisk (*) is observed at specific angles of 2θ: 25.84°, 31.63°, 34.21°, and 36.12°, with corresponding index values (h, k, l) of (220), (100), (002), and (101), respectively. This peak is indicative of the degree of crystallinity exhibited by ZnO nanoparticles. The SEM data indicates that the particles generated possess a rod-like morphology, exhibiting a range of sizes. The Nyquist plots exhibit a semicircular arc pattern at low frequencies, as indicated by the findings from the EIS test. The data obtained from antioxidant assays indicated that ZnO-curcumin achieved an inhibition level of 47.09%, while curcumin alone showed a significantly lower inhibition percentage of 4.93%.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"23 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135808905","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

Synthesis of CoNi by Electrodeposition Technique and its Application as an Electrocatalyst for Water Splitting 电沉积法合成CoNi及其在水裂解电催化剂中的应用

chemistry and materials research Pub Date : 2023-10-31 DOI: 10.56425/cma.v2i3.64

None Chika Shafa Maura, None Muhammad Fathar Aulia, None Raudhatul Hadawiyah, None Wulan Kharisma Dera, None Hilman Syafei

{"title":"Synthesis of CoNi by Electrodeposition Technique and its Application as an Electrocatalyst for Water Splitting","authors":"None Chika Shafa Maura, None Muhammad Fathar Aulia, None Raudhatul Hadawiyah, None Wulan Kharisma Dera, None Hilman Syafei","doi":"10.56425/cma.v2i3.64","DOIUrl":"https://doi.org/10.56425/cma.v2i3.64","url":null,"abstract":"Water splitting is regarded as a highly efficacious methodology for obtaining hydrogen, intending to be employed for the purpose of renewable fuel production. However, the performance of this technique is constrained by the sluggish kinetics of the hydrogen evolution reaction in alkaline environments and the oxygen evolution reaction, which leads to significant energy inefficiency and excessive potential requirements. To enhance the reaction kinetics and efficiency of water splitting, there exists a pertinent requirement for an electrocatalyst that exhibits commendable efficiency. The primary objective of this study is to construct a cobalt-nickel (CoNi) electrocatalyst that facilitates water splitting. The present study employs the technique of electrodeposition for its experimental procedures. The findings of the study indicated that the CoNi sample, as observed through scanning electron microscopy with energy dispersive X-ray spectroscopy (EDX) analysis, exhibited a flattened, circular form and agglomeration. The EDX analysis yielded elemental composition results indicating a cobalt content of 20.51% and nickel content of 79.49% The X-ray diffractometer analysis reveals that the CoNi metal alloy has manifested a crystalline structure with a cubic configuration. The electrochemical impedance spectroscopy found that the charge transfer resistance of CoNi with the electrolyte solution was 1.48 kΩ. The data collected from the chronoamperometry test indicates the presence of a consistent and unchanging electrical current. Additionally, the cyclic voltammetry test presented Epa and Epc values of 0.4469 V and 0.3037 V, respectively, leading to a calculated ∆E of 0.1432 V. The research findings establish that the CoNi alloy, synthesized via the electrodeposition technique, exhibited a performance-effective electrocatalyst that closely approached the desired outcome.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"115 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135872917","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

Nickel Oxide (NiO) Thin Film Synthesis via Electrodeposition for Methylene Blue Photodegradation 电沉积法合成用于亚甲基蓝光降解的氧化镍薄膜

chemistry and materials research Pub Date : 2023-10-31 DOI: 10.56425/cma.v2i3.62

Mokhamad Ali Rizqi Maulana, None Aisyaturridha, None Salmah Cholilah, Fitria Dwi Arista, None Bagus Nur Listiyono

{"title":"Nickel Oxide (NiO) Thin Film Synthesis via Electrodeposition for Methylene Blue Photodegradation","authors":"Mokhamad Ali Rizqi Maulana, None Aisyaturridha, None Salmah Cholilah, Fitria Dwi Arista, None Bagus Nur Listiyono","doi":"10.56425/cma.v2i3.62","DOIUrl":"https://doi.org/10.56425/cma.v2i3.62","url":null,"abstract":"Nickel oxide (NiO) is an ideal photocatalyst material for methylene blue photodegradation. NiO is known to have high photocatalytic activity, good stability, and non-toxic properties. However, conventional NiO thin film synthesis methods are inefficient because require high temperatures, complex equipment operations, and volatile precursor solutions. Therefore, in this study, NiO was synthesized by the electrodeposition method and then applied for methylene blue photodegradation. NiO thin film's morphological structure and elemental composition percentage were characterized by field emission scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively. Meanwhile, the crystal structure was characterized using an X-ray diffractometer. Several electrochemical and photodegradation tests were conducted to analyze the performance of the NiO photocatalyst. The results showed NiO was successfully synthesized using the electrodeposition method. The morphology of NiO was a coral-like structure. A sharp diffraction peak with high intensity at 2 with 43.28° indicates a well-ordered crystalline of NiO. The maximum photocurrent density generated from the photoelectrochemical test was 0.1287 mA/cm2. The small charge transfer resistance value (1353.6 Ω) confirmed from the electrochemical impedance spectroscopy test indicates low charge transfer resistance. Percent photodegradation of methylene blue was obtained at 65% in 100 min, which indicated good photocatalytic activity.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"102 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135872555","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

Electrodeposition of CoNi Bimetallic Catalyst for Ethanol Electrooxidation Application 电沉积CoNi双金属催化剂在乙醇电氧化中的应用

chemistry and materials research Pub Date : 2023-10-31 DOI: 10.56425/cma.v2i3.63

Abdul Asywalul Fazri, None Alvida Nor Puspita, None Selvia Ningsih, None Annisa Auliya

{"title":"Electrodeposition of CoNi Bimetallic Catalyst for Ethanol Electrooxidation Application","authors":"Abdul Asywalul Fazri, None Alvida Nor Puspita, None Selvia Ningsih, None Annisa Auliya","doi":"10.56425/cma.v2i3.63","DOIUrl":"https://doi.org/10.56425/cma.v2i3.63","url":null,"abstract":"Platinum is potentially employed as a catalyst in direct ethanol fuel cells (DEFCs). However, its scarcity and susceptibility to carbon monoxide poisoning give rise to novel challenges necessitating resolution. Transition metals such as nickel and cobalt are regarded as highly auspicious catalysts for DEFCs due to their perceived potential to reduce the expenditure associated with the synthesis procedure. In the present investigation, the synthesis of a cobalt-nickel (CoNi) catalyst with bimetallic properties was effectively accomplished through the electrodeposition technique utilizing the stimulator mode. Subsequently, an evaluation was conducted to assess the catalyst's proficiency in ethanol electrooxidation. The CoNi samples underwent comprehensive characterization through the utilization of various analytical techniques, namely X-ray diffraction (XRD), scanning electron microscopy (SEM), elemental dispersive X-ray analysis, and electrochemical impedance spectroscopy (EIS). The XRD analysis confirmed the formation of CoNi, while the SEM characterization demonstrated that the CoNi samples exhibited a homogeneous morphological feature. The impedance measured by the EIS technique displayed a resistance to charge transfer value of 21.21 kΩ, while the solution resistance value amounted to 66.67 kΩ. The catalytic efficiency of the specimens in ethanol electrooxidation was evaluated using the cyclic voltammetry technique, resulting in a peak current density of 3.14 mA/cm2 proving the potential of bimetallic CoNi to be a low-cost catalyst for ethanol electrooxidation process.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"23 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135808904","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

Synthesis and Characterization of Nanocube Cu2O Thin Film at Room Temperature for Methylene Blue Photodegradation Application 用于亚甲基蓝光降解的纳米立方Cu2O薄膜的合成与表征

chemistry and materials research Pub Date : 2023-10-31 DOI: 10.56425/cma.v2i3.65

None Muhamad Athariq, None Muhammad Raihan Rauf, None Ikhfa Wiqoy Khairany, None Intan Fadia Adani, None Mega Gladiani Sutrisno

引用次数: 0

Scan rate Dependent Factor for Antioxidant Activity of Gold Nanofilms Synthesized via Cyclic Voltammetry Technique 循环伏安法合成金纳米膜抗氧化活性的扫描速率影响因素

chemistry and materials research Pub Date : 2023-07-29 DOI: 10.56425/cma.v2i2.60

B. A. Suliasih, Dwi Giwang Kurniawan, Annisa Auliya, M. Angelina

引用次数: 0

PtAu Nanoparticle as a Catalyst for Ethanol Electrooxidation PtAu纳米颗粒作为乙醇电氧化催化剂的研究

chemistry and materials research Pub Date : 2023-06-30 DOI: 10.56425/cma.v2i2.58

Amelia Sabella, Annisa Auliya

引用次数: 0

Cocoa Powder Antioxidant Activity Test Using Cyclic Voltammetry and Differential Pulse Voltammetry Methods 循环伏安法和差分脉冲伏安法测定可可粉抗氧化活性

chemistry and materials research Pub Date : 2023-06-30 DOI: 10.56425/cma.v2i2.51

A. Sakinah, Ibrahim Dhuafa Fikri

引用次数: 0

Analysis of Cobalt(II) and Nickel(II) in Water Medium using Voltammetry Techniques 用伏安法分析水介质中的钴(II)和镍(II)

chemistry and materials research Pub Date : 2023-06-30 DOI: 10.56425/cma.v2i2.52

Devi Aliefiyardi Aulia Widowati, Fanny Kurniawan, Shynta Ramadhan

{"title":"Analysis of Cobalt(II) and Nickel(II) in Water Medium using Voltammetry Techniques","authors":"Devi Aliefiyardi Aulia Widowati, Fanny Kurniawan, Shynta Ramadhan","doi":"10.56425/cma.v2i2.52","DOIUrl":"https://doi.org/10.56425/cma.v2i2.52","url":null,"abstract":"Currently, the electrochemical method as one of the fast, accurate, and reliable techniques for detecting heavy metals such as Co and Ni has been widely developed. Cyclic voltammetry methodology was successfully employed for determination of trace cobalt (Co) and nickel (Ni). Co and Ni levels are studied because they can cause water pollution and can be toxic, and non-biodegradable which influences the health of living things. To obtain results with high accuracy, this study tested several electrochemical parameters. Based on the results processed, the CoNi level in the solution can be measured well in the voltage range, scan rate, and pH of the solution, respectively, at -1.00 V to 0.75 V, 250 mV/s, and pH 3 (Ni) and pH 7 (Co). This work have been validated and showed good results with correlation coefficients of Co and Ni. The detection limit and quantity limit for Co and Ni were 510.2 ppm and 723.5 ppm, respectively, with 274.99 ppm and 916.66 ppm. Co and Ni metal RSDs also showed good values (<5%). In this study, Co and Ni levels in lab waste obtained by the cyclic voltammetry method were 510.2 ppm and 1666.47 ppm, and the results obtained from atomic absorption spectroscopy (AAS) measurements of 510.7 ppm and 1676 ppm. The developed electrochemical systems based are giving new inputs to the existing devices or leading to the development of novel heavy metal detection tools with interest for applications in fields such as environmental, safety, security controls or other industries.","PeriodicalId":9724,"journal":{"name":"chemistry and materials research","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80357003","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 Deposition Potential on ZnNi Coating Corrosion Behaviour 沉积电位对锌镍镀层腐蚀行为的影响

chemistry and materials research Pub Date : 2023-06-30 DOI: 10.56425/cma.v2i2.57

Kendai Marcelli, M. G. Sutrisno

引用次数: 0