Russian Journal of Electrochemistry最新文献_第4页

Advances and Future Perspectives in Foam Material-Based Electrodes for Capacitive Deionization 泡沫材料电容性去离子电极的研究进展与展望

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-06-05 DOI: 10.1134/S1023193524601074

Laxmi Kant Pandey, Mahendra S. Gaikwad, Parmesh K. Chaudhari, Kartikeya Shukla

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Synthesis and Study of Electrical Transport Properties of Rare Earth Polytungstates M10W22O81 (M = La, Nd) 稀土多钨酸盐M10W22O81 （M = La, Nd）的合成及电输运性质研究

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-06-05 DOI: 10.1134/S1023193525600105

N. N. Pestereva, A. F. Guseva, A. A. Tushkova

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Electrochemically Deposited Zinc Oxide-Reduced Graphene Oxide as Bifunctional Composite for Photocatalyst and Photoelectrochemical Applications 电化学沉积氧化锌-还原氧化石墨烯双功能复合材料的光催化和光电化学应用

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-06-05 DOI: 10.1134/S1023193524601104

Mohammed Kuku, Mohammad Arishi

{"title":"Electrochemically Deposited Zinc Oxide-Reduced Graphene Oxide as Bifunctional Composite for Photocatalyst and Photoelectrochemical Applications","authors":"Mohammed Kuku,  Mohammad Arishi","doi":"10.1134/S1023193524601104","DOIUrl":"10.1134/S1023193524601104","url":null,"abstract":"In this work, we report a hybrid nanocomposite material composed of reduced graphene oxide/zinc oxide (RGO/ZnO), which has gained attention for photocatalytic wastewater treatment and photoelectrochemical applications. We synthesized RGO/ZnO thin films using modified Hummer’s method and electrochemical deposition. Initially, RGO was coated onto indium tin oxide (ITO) via drop-casting, followed by ZnO electrodeposition. The surface morphology of ZnO was adjusted using additives to enhance porosity and surface area. This RGO/ZnO composite was employed for photodegradation of methylene blue (MB) dye under visible light. The combination of RGO and ZnO improved catalytic properties due to ZnO electronic, optical, and catalytic characteristics, with RGO serving as an excellent electron conductor with high mobility. Characterization of the nanocomposite was conducted using X-ray diffraction, scanning electron microscopy, and UV–Visible diffuse reflectance spectroscopy. The UV–visible spectrum showed significant MB absorption over time, and photocatalytic activity was evaluated by degradation kinetics of MB dye under solar illumination. The RGO/ZnO composite demonstrated 95.4% photodegradation of MB compared to 63.4% by pure ZnO. Additionally, the RGO/ZnO showed an enhanced photocurrent response of 5.5 mA/cm2 with lower overpotential. Our work suggests a pathway for the fast synthesis of RGO-semiconductor nanocomposites with superior photocatalytic properties for modern applications.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 3","pages":"96 - 105"},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162298","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}

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Oxygen Mobility of Samarium Doped Neodymium Nickelates Sintered by E-Beams 电子束烧结掺钐镍酸钕的氧迁移率

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-04-17 DOI: 10.1134/S1023193524601670

V. A. Sadykov, E. M. Sadovskaya, Yu. N. Bespalko, E. A. Smal’, O. A. Bulavchenko, N. F. Eremeev, I. P. Prosvirin, M. A. Mikhailenko, M. V. Korobeynikov

{"title":"Oxygen Mobility of Samarium Doped Neodymium Nickelates Sintered by E-Beams","authors":"V. A. Sadykov, E. M. Sadovskaya, Yu. N. Bespalko, E. A. Smal’, O. A. Bulavchenko, N. F. Eremeev, I. P. Prosvirin, M. A. Mikhailenko, M. V. Korobeynikov","doi":"10.1134/S1023193524601670","DOIUrl":"10.1134/S1023193524601670","url":null,"abstract":"Ruddlesden–Popper phases are known materials for electrochemical devices such as solid oxide fuel cells/electrolyzers, oxygen separation membranes. Doping A-site with lanthanides with less radii can allow increasing the oxygen mobility, however, this problem is still not studied well. This work aims at studying phase composition and transport properties of Sm doped Nd nickelates sintered by radiation-thermal technique using e-beams. Nd2 – xSmxNiO4 + δ (x = 0.2, 0.4) were synthesized by modified Pechini technique and sintered by e-beams at 1150–1250°C. The materials obtained were characterized by X-ray diffraction, X‑ray photoelectron spectroscopy and temperature-programmed isotope exchange of oxygen with C18O2 in a flow reactor. The surface oxygen is present in two forms differing in binding energy. According to the temperature-programmed isotope exchange data, the samples exhibit nonuniformity in the oxygen mobility, and slow diffusion channel is present for the sample with x = 0.4. Such an oxygen diffusion features are probably related to the effect of doping and radiation-thermal sintering on the structure with formation of admixed phases, hampering the cooperative migration due to emergence of local defects and variation of the surface and grain boundary composition.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 2","pages":"28 - 39"},"PeriodicalIF":1.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845788","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}

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The Role of Iodine and Pyridine Bases in the Alcohol Electrocatalytic Oxidation Mediated by 4-AcNH-TEMPO 碘和吡啶碱在4-AcNH-TEMPO介导的醇电催化氧化中的作用

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-04-17 DOI: 10.1134/S1023193524601621

E. N. Shubina, V. P. Kashparova, Ya. A. Ricker, D. V. Steglenko, I. Yu. Zhukova

{"title":"The Role of Iodine and Pyridine Bases in the Alcohol Electrocatalytic Oxidation Mediated by 4-AcNH-TEMPO","authors":"E. N. Shubina, V. P. Kashparova, Ya. A. Ricker, D. V. Steglenko, I. Yu. Zhukova","doi":"10.1134/S1023193524601621","DOIUrl":"10.1134/S1023193524601621","url":null,"abstract":"The role of iodine, pyridine bases, and the nitroxyl radical 4-AcNH-TEMPO in the electrooxidative conversion of alcohols into carbonyl compounds in a two-phase medium CH2Cl2/NaHCO3(aq) is studied. Using cyclic voltammetry, it was established that in a weakly alkaline medium (pH 8.6) the iodide ion is oxidized to active forms of iodine (I2 and I+), which are terminal oxidizing agents converting the nitroxyl radical into oxoammonium cations necessary for the oxidation of alcohol. It has been established spectrophotometrically that the pyridine bases are capable of stabilizing I2 and I+ as [PyI2], [PyI]+ complexes whose formation occurs predominantly in the organic phase. The stabilized forms of iodine effectively convert the nitroxyl radical into oxoammonium cations at the electrode interface. The formation of a catalytic complex between the oxoammonium cations and the pyridine base occurs in the aqueous phase. The cyclic-voltammetry studies showed that the rate of nitroxyl-radical-mediated alcohol oxidation increased up to fourfold in the presence of the pyridine base, as compared to the oxidative transformation in the absence of the pyridine base. This proves the advantages of the nitroxyl radical/pyridine base catalytic system and specifies the role of the pyridine base as a promoter in the alcohol indirect electrooxidation.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 2","pages":"17 - 27"},"PeriodicalIF":1.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845787","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

The Tremag Co–Ni–Fe Magnetic Films Tremag Co-Ni-Fe 磁性薄膜

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-04-17 DOI: 10.1134/S1023193525700016

R. D. Tikhonov

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Barrier Layers Based on Refractory Metals Contacting High-Temperature Thermoelements 基于难熔金属与高温热元接触的阻隔层

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-04-17 DOI: 10.1134/S1023193524601232

E. P. Korchagin, Yu. I. Shtern, I. N. Petukhov, M. Yu. Shtern, M. S. Rogachev, R. M. Ryazanov

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Inhibitory Protection of Low-Carbon Steel in a Flow of Phosphoric Acid Solutions Containing Iron(III) Phosphate 低碳钢在含磷酸铁（III）溶液流动中的抑制保护作用

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-03-22 DOI: 10.1134/S1023193524601293

Ya. G. Avdeev, A. V. Panova, T. E. Andreeva

{"title":"Inhibitory Protection of Low-Carbon Steel in a Flow of Phosphoric Acid Solutions Containing Iron(III) Phosphate","authors":"Ya. G. Avdeev, A. V. Panova, T. E. Andreeva","doi":"10.1134/S1023193524601293","DOIUrl":"10.1134/S1023193524601293","url":null,"abstract":"The corrosion of low-carbon steel is studied in a flow of H3PO4 solutions containing FePO4 and also with addition of a mixture of corrosion inhibitors, particularly, a 3-substituted derivative of 1,2,4-triazole (IFKhAN-92) and KNCS. In such solutions, the partial reactions of the iron anodic ionization and the cathodic reduction of H+ and Fe(III) cations proceed on steel. The former two reactions are controlled by kinetics, whereas the latter reaction is diffusion-controlled. The accelerating effect of FePO4 on the steel corrosion in H3PO4 solutions is mainly due to the reduction of Fe(III). In acid solutions containing inhibitors, Fe(III) cations continue to accelerate all partial reactions on steel. Despite this accelerating effect, the mixtures of IFKhAN-92 and KNCS still exert a strong inhibitory effect on the electrode reactions on steel, which is noteworthy. The data on the corrosion of low-carbon steel in such flows, obtained based on the mass loss of metal samples, adequately agree with the results acquired when studying the partial electrode reactions. The accelerating effect of FePO4 on steel corrosion in a flow of H3PO4 solutions is observed, including the media containing inhibitors. In these media, the steel corrosion is determined by convection, which is typical of diffusion-controlled reactions. The mixed inhibitors IFKhAN-92 + KNCS are shown to considerably inhibit the steel corrosion in a flow of H3PO4 solutions containing FePO4, which is a result of the efficient suppression of all partial electrode reactions on this metal.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 1","pages":"1 - 10"},"PeriodicalIF":1.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676213","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}

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Anodic Dissolution and Corrosion of Aluminum in KOH Solutions in 90% Ethanol Containing Additives of Gallium and Indium Compounds. Inhibitory Effect of Citric Acid 铝在含镓铟化合物添加剂的90%乙醇KOH溶液中的阳极溶解和腐蚀。柠檬酸的抑制作用

IF 1.1 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-03-22 DOI: 10.1134/S1023193524601542

K. V. Rybalka, L. A. Beketaeva

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Study of the Properties of Soft Carbons and Graphite by Electrochemical Impedance Spectroscopy. Analysis of the Distribution Function of Relaxation Times 用电化学阻抗谱法研究软炭和石墨的性质。松弛时间分布函数的分析

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-03-02 DOI: 10.1134/S1023193524700526

D. V. Kolosnitsyn, E. V. Kuzmina, N. V. Egorova, V. S. Kolosnitsyn

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