Russian Journal of Electrochemistry最新文献

Numerical Modeling of Electrolyte-Supported Button Solid Oxide Direct Carbon Fuel Cell Based on Boudouard Reaction 基于布杜尔反应的电解质支撑扣式固体氧化物直接碳燃料电池的数值建模

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-09-25 DOI: 10.1134/S1023193524700332

Junzhe Wang, Anning Zhou, Zongxing Song, Guoyang Liu, Sicheng Qin, Dan Wang

引用次数: 0

Electrochemical Sensor Based on Molecularly Imprinted Polymer for the Detection of Moxifloxacin 基于分子印迹聚合物的电化学传感器用于检测莫西沙星

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-09-25 DOI: 10.1134/S1023193524700320

Memoona Shakoor, Nauman Sadiq, Muafia Akbar, Muhammad Shafique, Ghulam Mustafa

{"title":"Electrochemical Sensor Based on Molecularly Imprinted Polymer for the Detection of Moxifloxacin","authors":"Memoona Shakoor, Nauman Sadiq, Muafia Akbar, Muhammad Shafique, Ghulam Mustafa","doi":"10.1134/S1023193524700320","DOIUrl":"10.1134/S1023193524700320","url":null,"abstract":"Moxifloxacin evaluation in pharmaceuticals and biological fluids is in high demand. It is important to fabricate a simple, sensitive, selective, miniaturized, and cost-effective chemical sensor to detect moxifloxacin in the environment. In this study, an electrochemical sensor based on molecularly imprinted polymer (MIP) was fabricated for the detection of moxifloxacin in which interdigital electrodes (IDEs) were used as transducers. Thermal free-radical bulk polymerization was used to synthesize MIP, methacrylic acid (MAA) was used as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinker, azobisisobutyronitrile (AIBN) as a free radical initiator, and dimethyl sulfoxide (DMSO) as a porogenic solvent in a poly (methacrylic acid) system for efficient recognition. The LCR meter was used to measure various electrical properties such as inductance and resistance. A concentration-dependent linear response was observed by the fabricated sensor having a lower limit of detection of 240 and 63 ppb for series and parallel resistance, respectively. Meanwhile, series and parallel inductance had lower detection limits of 48 and 8 ppb, respectively. Furthermore, in the presence of competing agents such as uric acid, ascorbic acid, and paracetamol, the fabricated sensor showed a selective response for moxifloxacin. The fabricated sensor also showed reversible and reproducible response.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Synthesis of a Composite of Few-Layer Graphene Structures with PdNi-Alloy Nanoparticles and Its Electrocatalytic Activity in the Methanol Oxidation Reaction 少层石墨烯结构与钯镍合金纳米颗粒的电化学合成及其在甲醇氧化反应中的电催化活性

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-09-25 DOI: 10.1134/S1023193524700307

V. K. Kochergin, N. S. Komarova, A. S. Kotkin, I. I. Khodos, R. A. Manzhos, A. G. Krivenko

引用次数: 0

Electrocatalysts Based on Platinized Titanium Dioxide Doped with Ruthenium for Hydrogen and Carbon-Monoxide Potentiometric Sensors 基于掺杂钌的铂化二氧化钛的电催化剂，用于氢和一氧化碳电位传感器

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-09-25 DOI: 10.1134/S1023193524700290

A. A. Belmesov, L. V. Shmygleva, N. V. Romanova, M. Z. Galin, A. V. Levchenko

引用次数: 0

A High Discharge Power Density Single Cell of Hydrogen–Vanadium Flow Battery 高放电功率密度单体氢钒液流电池

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-09-25 DOI: 10.1134/S1023193524700319

O. I. Istakova, D. V. Konev, D. O. Tolstel, E. A. Ruban, M. S. Krasikova, M. A. Vorotyntsev

{"title":"A High Discharge Power Density Single Cell of Hydrogen–Vanadium Flow Battery","authors":"O. I. Istakova, D. V. Konev, D. O. Tolstel, E. A. Ruban, M. S. Krasikova, M. A. Vorotyntsev","doi":"10.1134/S1023193524700319","DOIUrl":"10.1134/S1023193524700319","url":null,"abstract":"Hybrid flow chemical power source (Pt–C)H2|Nafion|VO2+(C) in which the membrane–electrode assembly combines gas-diffusion anode of hydrogen–air fuel cell and cathode of vanadium redox flow battery is studied. Concept of such a hydrogen–vanadium flow battery had been proposed earlier (2013) as an alternative to the vanadium redox flow battery, also designed for large-scale electrical energy storage but its practical implementation has so far been limited to single cells having the active area within several tens of cm2. The goal of this work is the establishing of the factors limiting the discharge power density of such hybrid. hydrogen–vanadium flow battery cells which is inferior to both hydrogen–air fuel cell and vanadium redox flow batteries, even though the hydrogen–vanadium flow battery cell represents a combination of their more reversible half-cells. The object of the study is a cell with a 2 × 2 cm membrane–electrode assembly equipped with Luggin capillary on the vanadium electrolyte side. Measurements of the current–voltage characteristics of the entire cell, as well as the polarization characteristics of its half-cells, are performed using a six-electrode scheme of the cell connection with varied vanadium electrolyte circulation rate and different cathode materials (carbon felts, 4.6 or 2.5 mm thick, as well as carbon paper). The contribution of the hydrogen gas diffusion electrode to the total dc resistance of the hydrogen–vanadium flow battery cell is shown being twice that of the flow-through vanadium cathode. A record high discharge power density has been achieved: 0.75 W cm–2, for the cell based on the commercially available material, Sigracell GFD 2.5 EA-TA carbon felt as the cathode material, without its special surface modification.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Studies on Porous Nanostructured Palladium–Cobalt–Silica as Heterogeneous Catalysts for Oxygen Evolution Reaction 多孔纳米结构钯钴硅作为氧进化反应异相催化剂的研究

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-09-25 DOI: 10.1134/S1023193524700344

Prem. C. Pandey, Chitra Singh

引用次数: 0

Anthraquinone Azo Dye as a Novel Electrochemical Platform for the Simultaneous Detection of Dopamine and Serotonin: Synthesis and Characterization 作为同时检测多巴胺和羟色胺的新型电化学平台的蒽醌偶氮染料：合成与表征

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-08-07 DOI: 10.1134/S1023193524700289

K. M. Pallavi, G. P. Mamatha, Pampapathi Shekharagouda, Chethan Krishnamurthy

{"title":"Anthraquinone Azo Dye as a Novel Electrochemical Platform for the Simultaneous Detection of Dopamine and Serotonin: Synthesis and Characterization","authors":"K. M. Pallavi, G. P. Mamatha, Pampapathi Shekharagouda, Chethan Krishnamurthy","doi":"10.1134/S1023193524700289","DOIUrl":"10.1134/S1023193524700289","url":null,"abstract":"A novel electrochemical sensor was designed by using a synthesized anthraquinone azo dye-based glassy carbon electrode was fabricated and used for enhanced selective determination of Dopamine (DA) and serotonin (5-HT) simultaneously at an optimum working potential (0.11 V for DA and 0.27 V for 5-HT). Utilizing spectroscopic techniques like FT-IR, HR-MS, and 1H-NMR, a synthesized azo dye molecule structure was characterized. Different electrochemical techniques, including cyclic voltammetry (CV) and differential pulse voltammetry (DPV), were employed to study the electrochemical sensing abilities of the modified working electrode. The DA and 5-HT linear response ranges between current intensities and concentration were found to be 0.001–0.055 and 0.01–1.15 µM and the lower limit of detection (LOD) was 1.9 and 4.16 nM respectively. Further demonstrating the constructed electrochemical sensor’s practical application were tests of reproducibility, stability, and real sample analysis with excellent recovery.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141937610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocatalytic Activity Enhancement of ZnO/CZTS Thin Film Heterostructures in Visible Region: Controlling Phase Pure Kesterite CZTS Thin Films and the Effect of the Number of Seed Layers on Photocatalytic Performance 可见光区 ZnO/CZTS 薄膜异质结构的光催化活性增强：控制纯 Kesterite CZTS 薄膜的相位以及种子层数对光催化性能的影响

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-08-07 DOI: 10.1134/S1023193524700277

Kieu Loan Phan Thi, Dao Anh Tuan, Vinh Trung Phan, Le Vu Tuan Hung

{"title":"Photocatalytic Activity Enhancement of ZnO/CZTS Thin Film Heterostructures in Visible Region: Controlling Phase Pure Kesterite CZTS Thin Films and the Effect of the Number of Seed Layers on Photocatalytic Performance","authors":"Kieu Loan Phan Thi, Dao Anh Tuan, Vinh Trung Phan, Le Vu Tuan Hung","doi":"10.1134/S1023193524700277","DOIUrl":"10.1134/S1023193524700277","url":null,"abstract":"This work focuses on optimizing the structure of CZTS/ZnO thin film heterostructure to increase the photocatalytic property in visible region. The CZTS thin films were fabricated on glass substrates by dip coating method. Then ZnO thin films were grown on the CZTS layer by chemical bath deposition method at low temperature. Secondary phase formation in CZTS thin films with four different molar ratios of Cu : Zn : Sn : S of 1.4 : 1 : 1 : 8, 1.6 :1 : 1 : 8, 1.8 : 1 : 1 : 8 and 2 : 1 : 1 : 8 were investigated. In order to improve the crystallinity, CZTS thin films were annealed at 450°C in N2 atmosphere without sulfurization. The results showed that the CZTS thin film exhibited phase pure kesterite structure and good crystallinity at the ratio of 1.8 : 1 : 1 : 8 (Cu : Zn : Sn : S), absence of secondary phase formation in CZTS thin film was important to reduce charge recombination. For ZnO/CZTS thin film heterostructure, in order to reduce the lattice mismatch of ZnO and CZTS, some seed layers were coated onto the surface of CZTS thin film to support the growth of ZnO thin film in these heterostructures. Raman spectra, XRD patterns and SEM images data confirm that the ZnO/CZTS thin film heterostructures with two seed layers achieved optimal crystal structure and film morphology. UV-Vis spectra of heterostructures suggested that photocatalytic activity is extended toward visible-light region from 380 to 800 nm. Finally, the photocatalytic performance was examined through degradation of methylene blue (MB) and apparent rate constant (kapp), namely: the highest degradation of MB was obtained with ZC2 labelled heterostructure samples up to 92.8% in 150 min; kapp of this sample is much larger (as high as 6.5 and 29.2 times respectively) than that of pristine CZTS and ZnO films.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141937611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetics of Dimethylsulfoxide Electrooxidation on a Platinum Electrode in Sulfuric-Acid and Alkaline Solutions 铂电极在硫酸和碱性溶液中的二甲基亚砜电氧化动力学

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-08-07 DOI: 10.1134/S102319352470023X

K. O. Ibragimova, Sh. Sh. Khidirov, S. I. Suleymanov

{"title":"Kinetics of Dimethylsulfoxide Electrooxidation on a Platinum Electrode in Sulfuric-Acid and Alkaline Solutions","authors":"K. O. Ibragimova, Sh. Sh. Khidirov, S. I. Suleymanov","doi":"10.1134/S102319352470023X","DOIUrl":"10.1134/S102319352470023X","url":null,"abstract":"Electrochemical study of the mechanism of dimethylsulfoxide electrooxidation on a platinum electrode in acidic and alkaline solutions is carried out. On the stationary anodic polarization curves taken in acidic and alkaline dimethylsulfoxide solutions, the oxidation currents preceded those measured in the supporting electrolyte. By the analyzing of linear segments of anodic voltammograms, the coefficients of the Tafel equation are determined. This allowed choosing the current density range and conditions for the dimethylsulfoxide electrooxidation on the platinum electrode. The electrolysis was carried out at controlled current density in electrolyzers both with unseparated compartments and the anodic and cathodic compartments separated with MK-40, MA-40 membranes and a MF-4SK fluoropolymer sulfocationite membrane. The high electrical conductivity and selectivity of the membranes provided good performance of the electrolysis process and obtaining of high-purity final product. Raman spectroscopy and gas chromatography–mass spectrometry confirmed that the products of dimethylsulfoxide electrooxidation in the acidic solution are dimethylsulfone and dimethylsulfoxide; in alkaline solution, the dimethyl sulfone and sodium methanesulfonate. The method of quantum-chemical calculations showed good adsorption of dimethylsulfoxide molecules at platinum within the frames of the cluster model. It is shown that the dimethylsulfoxide formation at the platinum electrode surface at high current densities occurs by the radical-ion mechanism, involving breaking of the C–S bond. Based on the experimental results obtained, a scheme for the dimethylsulfoxide electrochemical oxidation at platinum is proposed.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141937605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Square-Wave Stripping Voltammetry for the Analysis of Lead–Bismuth Electrodeposits 方波剥离伏安法在铅铋电沉积物分析中的应用

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2024-08-07 DOI: 10.1134/S1023193524700198

I. A. Voronin, S. V. Sotnichuk, I. V. Kolesnik, K. S. Napolskii

引用次数: 0