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International journal of electrochemistry最新文献

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Electrochemical Characterization of Platinum Nanotubules Made via Template Wetting Nanofabrication 模板润湿纳米法制备铂纳米管的电化学表征
IF 1.8
International journal of electrochemistry Pub Date : 2013-10-24 DOI: 10.1155/2013/960513
Eric Broaddus, J. Brubaker, S. Gold
{"title":"Electrochemical Characterization of Platinum Nanotubules Made via Template Wetting Nanofabrication","authors":"Eric Broaddus, J. Brubaker, S. Gold","doi":"10.1155/2013/960513","DOIUrl":"https://doi.org/10.1155/2013/960513","url":null,"abstract":"Standard oxidation-reduction reactions such as those of ferrocyanide and ferrocene have long been employed in evaluating and comparing new electrode structures with more traditional configurations. A variety of nanostructured carbon electrodes developed in recent years have been reported to exhibit faster electron transfer kinetics than more traditional carbon structures when studied with these redox reactions. This type of comparison has not been widely explored for nanostructured platinum electrodes that have become increasingly common. In this work, a platinum nanotubule array electrode was fabricated via a simple template-based process and evaluated using the standard ferrocyanide redox reaction. The nanotubule array electrodes were observed to more closely approach ideal reversible behavior than a typical Pt black/Nafion fuel cell electrode or a standard polished Pt disc electrode. The apparent heterogeneous electron transfer coefficient was determined using the Nicholson method and found to be one to two orders of magnitude greater for the nanotubule array electrodes, depending on the diameter of the nanotubules, in comparison with these same two more traditional electrode structures.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"222-228"},"PeriodicalIF":1.8,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/960513","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64330976","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: 11
Fast Switching Electrochromic Devices Containing Optimized BEMA/PEGMA Gel Polymer Electrolytes 含优化BEMA/PEGMA凝胶聚合物电解质的快速开关电致变色器件
IF 1.8
International journal of electrochemistry Pub Date : 2013-10-07 DOI: 10.1155/2013/138753
N. Garino, S. Zanarini, S. Bodoardo, J. Nair, S. Pereira, L. Pereira, R. Martins, E. Fortunato, N. Penazzi
{"title":"Fast Switching Electrochromic Devices Containing Optimized BEMA/PEGMA Gel Polymer Electrolytes","authors":"N. Garino, S. Zanarini, S. Bodoardo, J. Nair, S. Pereira, L. Pereira, R. Martins, E. Fortunato, N. Penazzi","doi":"10.1155/2013/138753","DOIUrl":"https://doi.org/10.1155/2013/138753","url":null,"abstract":"An optimized thermoset gel polymer electrolyte based on Bisphenol A ethoxylate dimethacrylate and Poly(ethylene glycol) methyl ether methacrylate (BEMA/PEGMA) was prepared by facile photo-induced free radical polymerisation technique and tested for the first time in electrochromic devices (ECD) combining WO3 sputtered on ITO as cathodes and V2O5 electrodeposited on ITO as anodes. The behaviour of the prepared ECD was investigated electrochemically and electro-optically. The ECD transmission spectrum was monitored in the visible and near-infrared region by varying applied potential. A switching time of ca. 2 s for Li+ insertion (coloring) and of ca. 1 s for Li+ de-insertion (bleaching) were found. UV-VIS spectroelectrochemical measurements evidenced a considerable contrast between bleached and colored state along with a good stability over repeated cycles. The reported electrochromic devices showed a considerable enhancement of switching time with respect to the previously reported polymeric ECD indicating that they are good candidates for the implementation of intelligent windows and smart displays.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-10"},"PeriodicalIF":1.8,"publicationDate":"2013-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/138753","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64378172","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: 8
A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles 基于磁性纳米颗粒预浓缩的多巴胺传感器
IF 1.8
International journal of electrochemistry Pub Date : 2013-09-30 DOI: 10.1155/2013/803672
M. Bagherzadeh, S. Ansari, Fariborz Riahi, A. Farahbakhsh
{"title":"A Dopamine Sensor Based on Pre-Concentration by Magnetic Nanoparticles","authors":"M. Bagherzadeh, S. Ansari, Fariborz Riahi, A. Farahbakhsh","doi":"10.1155/2013/803672","DOIUrl":"https://doi.org/10.1155/2013/803672","url":null,"abstract":"Herein, Fe3O4 magnetic nanoparticles (MNPs) were synthesized and characterized. Afterward, a magnetic carbon paste electrode (MCPE) was modified with MNPs via casting and drying MNPs on top of the MCPE (MCPE/MNP). Electrochemical behavior of the MCPE/MNP was studied by cyclic voltammetry in the presence of [Fe(CN)6]3−/4− as a redox probe, and surface of MNPs was evaluated as . The behavior of MCPE/MNP towards dopamine (DA) and ascorbic acid (AA) has been investigated by electrochemical methods, and the obtained results showed that the MCPE/MNP has adsorption behavior towards only DA. Based on this behavior, the DA molecules were pre-concentrated on top of the MCPE/MNP and followed with stripping in DA free solution. Subsequent to experimental and instrumental optimization, a calibration curve from to  M DA with , DL =  M DA, and RSD = 4.6%, was obtained in the presence of  M AA. Performance of the MCPE/MNP was successfully tested in a pharmaceutical sample.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-10"},"PeriodicalIF":1.8,"publicationDate":"2013-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/803672","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64260340","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: 15
Voltammetry Study of an Anti-HIV Compound by means of a Thin Organic Membrane 用有机薄膜研究抗hiv化合物的伏安法
IF 1.8
International journal of electrochemistry Pub Date : 2013-09-24 DOI: 10.1155/2013/902872
A. Nassi, Thiery Christophe Ebelle, J. Manga, Jules-Blaise Mabou Leuna, J. D. Dazie, E. Ngameni
{"title":"Voltammetry Study of an Anti-HIV Compound by means of a Thin Organic Membrane","authors":"A. Nassi, Thiery Christophe Ebelle, J. Manga, Jules-Blaise Mabou Leuna, J. D. Dazie, E. Ngameni","doi":"10.1155/2013/902872","DOIUrl":"https://doi.org/10.1155/2013/902872","url":null,"abstract":"Cyclic and square wave voltammetries have been used to study electrochemical behaviour of an anti-HIV agent (Guttiferone A) at the liquid-liquid interface. The thin organic membrane is formed by an organic solvent containing redox probe. Guttiferone A, a benzophenone (BP) with appropriate electrolyte. It is demonstrated that BP possesses three reduction systems due to the redox transformation of the three tautomeric forms that lead to the migration of proton between the hydroxyl group in position 4 and the carbonyl group in positions 2 and 10. The transfer of proton from the aqueous solution to the organic phase is crucial for the redox transformation of BP into the organic membrane. The voltammograms obtained are strongly influenced by the pH of the aqueous phase. The electrochemical mechanism consists of 2e−/2H","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-8"},"PeriodicalIF":1.8,"publicationDate":"2013-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/902872","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64305775","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
Determination of Total Germanium in Chinese Herbal Remedies by Square-Wave Catalytic Adsorptive Cathodic Stripping Voltammetry at an Improved Bismuth Film Electrode 改进铋膜电极方波催化吸附阴极溶出伏安法测定中草药中总锗
IF 1.8
International journal of electrochemistry Pub Date : 2013-09-11 DOI: 10.1155/2013/735019
Shangwei Zhong, Jiali Su, Liang Chen, Jie Tong, Wenfang Jia, Xiangjun Li, H. Zou
{"title":"Determination of Total Germanium in Chinese Herbal Remedies by Square-Wave Catalytic Adsorptive Cathodic Stripping Voltammetry at an Improved Bismuth Film Electrode","authors":"Shangwei Zhong, Jiali Su, Liang Chen, Jie Tong, Wenfang Jia, Xiangjun Li, H. Zou","doi":"10.1155/2013/735019","DOIUrl":"https://doi.org/10.1155/2013/735019","url":null,"abstract":"A catalytic adsorptive cathodic stripping voltammetric method on an improved bismuth film electrode (BiFE) for the determination of trace germanium in the presence of pyrogallol has been investigated. A well-defined and sensitive stripping peak of Ge(IV)-pyrogallol complex was observed at −0.79 V (versus SCE) in a 0.1 M acetate buffer solution (pH 4.8) at a deposition potential of −0.34 V. The reduction current is catalytically enhanced by adding KBrO3. The experimental variables and potential interference were studied. Compared with the BiFE plated in the solution prepared based on HAc-NaAc without trisodium citrate, the improved BiFE electrodeposited in the solution of HAc-NaAc containing trisodium citrate displayed a better electroanalytical performance for the determination of germanium(IV). Under the optimized conditions, the detection limit of Ge(IV) was 60 ng L−1, and the relative standard deviation (RSD) was 3.73% at 5 μg L−1 level (). This method was successfully applied to determine the total germanium in several Chinese herbal remedies.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-7"},"PeriodicalIF":1.8,"publicationDate":"2013-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/735019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64230177","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: 8
Amperometric Detection of Bacillus anthracis Spores: A Portable, Low-Cost Approach to the ELISA 一种便携式、低成本的酶联免疫吸附法检测炭疽芽孢杆菌孢子
IF 1.8
International journal of electrochemistry Pub Date : 2013-09-09 DOI: 10.1155/2013/803485
G. D. Peckham, Brian E. Hew, D. Waller, Charles R. Holdaway, Michael Jen
{"title":"Amperometric Detection of Bacillus anthracis Spores: A Portable, Low-Cost Approach to the ELISA","authors":"G. D. Peckham, Brian E. Hew, D. Waller, Charles R. Holdaway, Michael Jen","doi":"10.1155/2013/803485","DOIUrl":"https://doi.org/10.1155/2013/803485","url":null,"abstract":"Antibody-based detection assays are generally robust, a desirable characteristic for in-the-field use. However, to quantify the colorimetric or fluorescent signal, these assays require expensive and fragile instruments which are ill-suited to in-the-field use. Lateral flow devices (LFDs) circumvent these barriers to portability but suffer from poor sensitivity and subjective interpretation. Here, an antibody-based method for detecting Bacillus anthracis spores via amperometric signal generation is compared to ELISA and LFDs. This amperometric immunoassay uses antibody conjugated to magnetic beads and glucose oxidase (GOX) along with the electron mediator 2, 6-dichlorophenolindophenol (DCPIP) for production of a measurable current from a 0.4 V bias voltage. With similar sensitivity to ELISA, the assay can be completed in about 75 minutes while being completely powered and operated from a laptop computer. Immunoassay amperometry holds promise for bringing low-cost, quantitative detection of hazardous agents to the field.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-6"},"PeriodicalIF":1.8,"publicationDate":"2013-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/803485","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64260496","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: 12
Simple Formation of Nanostructured Molybdenum Disulfide Thin Films by Electrodeposition 电沉积法制备纳米二硫化钼薄膜
IF 1.8
International journal of electrochemistry Pub Date : 2013-08-27 DOI: 10.1155/2013/138419
S. K. Ghosh, C. Srivastava, S. Nath, J. Celis
{"title":"Simple Formation of Nanostructured Molybdenum Disulfide Thin Films by Electrodeposition","authors":"S. K. Ghosh, C. Srivastava, S. Nath, J. Celis","doi":"10.1155/2013/138419","DOIUrl":"https://doi.org/10.1155/2013/138419","url":null,"abstract":"Nanostructured molybdenum disulfide thin films were deposited on various substrates by direct current (DC) electrolysis form aqueous electrolyte containing molybdate and sulfide ions. Post deposition annealing at higher temperatures in the range 450–700°C transformed the as-deposited amorphous films to nanocrystalline structure. High temperature X-ray diffraction studies clearly recorded the crystal structure transformations associated with grain growth with increase in annealing temperature. Surface morphology investigations revealed featureless structure in case of as-deposited surface; upon annealing it converts into a surface with protruding nanotubes, nanorods, or dumbbell shape nanofeatures. UV-visible and FTIR spectra confirmed about the presence of Mo-S bonding in the deposited films. Transmission electron microscopic examination showed that the annealed MoS2 films consist of nanoballs, nanoribbons, and multiple wall nanotubes.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-7"},"PeriodicalIF":1.8,"publicationDate":"2013-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/138419","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64378007","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: 16
Preparation and Investigation of a Novel Organic Polymer Consisting of 2,2,6,6-Tetramethylpiperidine-N-oxy as a Cathode Active Material in Li-Ion Batteries 新型锂离子电池正极活性材料2,2,6,6-四甲基哌啶- n -氧有机聚合物的制备与研究
IF 1.8
International journal of electrochemistry Pub Date : 2013-07-28 DOI: 10.1155/2013/732749
Emre Biçer, A. Öktemer
{"title":"Preparation and Investigation of a Novel Organic Polymer Consisting of 2,2,6,6-Tetramethylpiperidine-N-oxy as a Cathode Active Material in Li-Ion Batteries","authors":"Emre Biçer, A. Öktemer","doi":"10.1155/2013/732749","DOIUrl":"https://doi.org/10.1155/2013/732749","url":null,"abstract":"In the present study, a novel organic polymer consisting of 2,2,6,6-tetramethylpiperidine-N-oxyl group as an electroactive center is employed by synthesizing it from a commercially ready polymer. An investigation on electrochemical and battery properties of this material as a cathode active material in different electrolyte salts was conducted. A coin cell shows a discharge capacity of 40 mAh g−1 at 1 C which is 76% of its theoretical capacity. It is observed that there is no significant decrease in capacity value even at 2 C and 5 C which indicates that it is applicable for the high-power applications. Besides, a good cycle stability is obtained with the organic radical battery.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-6"},"PeriodicalIF":1.8,"publicationDate":"2013-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/732749","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64229240","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
Anodic Materials for Electrocatalytic Ozone Generation 电催化臭氧生成用阳极材料
IF 1.8
International journal of electrochemistry Pub Date : 2013-05-30 DOI: 10.1155/2013/128248
Yun‐Hai Wang, Qingyun Chen
{"title":"Anodic Materials for Electrocatalytic Ozone Generation","authors":"Yun‐Hai Wang, Qingyun Chen","doi":"10.1155/2013/128248","DOIUrl":"https://doi.org/10.1155/2013/128248","url":null,"abstract":"Ozone has wide applications in various fields. Electrocatalytic ozone generation technology as an alternative method to produce ozone is attractive. Anodic materials have significant effect on the ozone generation efficiency. The research progress on anodic materials for electrocatalytic ozone generation including the cell configuration and mechanism is addressed in this review. The lead dioxide and nickel-antimony-doped tin dioxide anode materials are introduced in detail, including their structure, property, and preparation. Advantages and disadvantages of different anode materials are also discussed.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-7"},"PeriodicalIF":1.8,"publicationDate":"2013-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/128248","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64375856","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: 19
Inhibiting Effects of Rabeprazole Sulfide on the Corrosion of Mild Steel in Acidic Chloride Solution 雷贝拉唑硫化物对低碳钢在酸性氯化物溶液中的缓蚀作用
IF 1.8
International journal of electrochemistry Pub Date : 2013-05-28 DOI: 10.1155/2013/714372
M. Pavithra, T. Venkatesha, M. K. P. Kumar
{"title":"Inhibiting Effects of Rabeprazole Sulfide on the Corrosion of Mild Steel in Acidic Chloride Solution","authors":"M. Pavithra, T. Venkatesha, M. K. P. Kumar","doi":"10.1155/2013/714372","DOIUrl":"https://doi.org/10.1155/2013/714372","url":null,"abstract":"The corrosion inhibition effect of Rabeprazole sulfide (RS) on mild steel in 1 M hydrochloric acid (HCl) was investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and chronoamperometric measurements. Protection efficiency of RS increases with the concentration and decreases with the rise in temperature. Adsorption of RS on mild steel surface in 1 M HCl follows Langmuir adsorption isotherm. The kinetic and thermodynamic parameters governing the adsorption process were calculated and discussed. The polarization results suggest that RS performed as an excellent mixed-type inhibitor for mild steel corrosion in 1 M HCl.","PeriodicalId":13933,"journal":{"name":"International journal of electrochemistry","volume":"2013 1","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2013-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2013/714372","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64219862","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: 9
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