Surface Engineering and Applied Electrochemistry最新文献_第8页

Study of Photocatalytic Activity of Titanium and Tungsten Oxides Obtained by an Electric Explosion of Metal Conductors in the Air 通过金属导体在空气中的电爆炸获得的钛和钨氧化物的光催化活性研究

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060030

Yu. O. Adamchuk, L. Z. Boguslavskii, A. N. Yushchishina, A. V. Sinchuk

{"title":"Study of Photocatalytic Activity of Titanium and Tungsten Oxides Obtained by an Electric Explosion of Metal Conductors in the Air","authors":"Yu. O. Adamchuk, L. Z. Boguslavskii, A. N. Yushchishina, A. V. Sinchuk","doi":"10.3103/S1068375523060030","DOIUrl":"10.3103/S1068375523060030","url":null,"abstract":"Oxides in the form of micro- and nanosized powder, containing agglomerates of particles with a high specific surface, were obtained by means of electric Ti and W wire explosion in the air. An X-ray phase analysis showed that the only product of Ti destruction is TiO2, while the electric explosion of W conductors results in the formation of WO3 + W2O7 mixture, in which tungsten anhydride WO3 dominates, and traces of a residual metallic W come across. The photocatalytic properties of electroexplosive powder were studied using a model oxidation reaction of methylene blue. It was revealed that both TiO2 and the WO3 + W2O7 mixture demonstrate catalytic activity within a wide spectrum of radiation, including the visible one. The catalytic activity of the WO3 + W2O7 mixture under ultraviolet and incandescent lamp radiation was inferior to that of TiO2; however, in the solar radiation, the rate of dye degradation with the participation of tungsten oxides is higher. In this case, the average rate of decreasing concentration of the dye in water containing a mixture of WO3 + W2O7 depends little upon the type of the radiation source.","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"798 - 802"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138993813","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

Electrocatalytic Oxygen Evolution on Glassy Carbon Electrode Modified with Optimized GC/CuxFe3 – xO4 (0 ≤ x ≤ 1.0) Nanocomposite in 1 M KOH Solution 优化 GC/CuxFe3 - xO4（0 ≤ x ≤ 1.0）纳米复合材料修饰的玻璃碳电极在 1 M KOH 溶液中的电催化氧进化过程

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060054

Basant Lal, Pankaj Chauhan

{"title":"Electrocatalytic Oxygen Evolution on Glassy Carbon Electrode Modified with Optimized GC/CuxFe3 – xO4 (0 ≤ x ≤ 1.0) Nanocomposite in 1 M KOH Solution","authors":"Basant Lal,  Pankaj Chauhan","doi":"10.3103/S1068375523060054","DOIUrl":"10.3103/S1068375523060054","url":null,"abstract":"Copper substituted ferrites (CuxFe3 – xO4; (0 ≤ x ≤ 1.0) were prepared by the egg white auto-combustion method at 550°C and investigated their physicochemical properties via the thermogravimetric analysis, infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and electrochemical ones via cyclic voltammenry and Tafel polarization. The formation of copper ferrites with a spinel phase was confirmed by the Fourier-transform infrared spectra having characteristic vibration peaks and by the X-ray diffraction spectra with reflection planes. The electrochemical performance of the oxygen evolution reaction of copper ferrites on glassy carbon electrodes was investigated in 1 M KOH. No redox couple was observed in cyclic voltammograms of the glassy carbon/oxide electrode in the selected oxygen overpotential regions. The iR-free Tafel polarization curves having higher Tafel slopes (b = 72–125 mV dec–1) and a lower current density (i = 0.29–4.7 mA cm–2 at 0.85 V) exhibited a sluggish nature of the fabricated oxide electrodes from the electrocatalytic point of view. The substitution of Fe by Cu in the oxide lattice considerably increased the electrocatalytic activity for the oxygen evolution reaction. Based on the current density for the oxygen evolution reaction, the 0.75 mol Cu-substituted oxide electrode was found to be the most active electrode among the prepared oxides. The order of the reaction related to the [OH–] concentration was a unity for almost all of the electrodes except when 0.25 mol Cu-substitution followed the second-order kinetics.","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"754 - 763"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631039","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

Synergism of the Initial Stage of Removal of Dielectric Materials during Electrical Erosion Processing in Electrolytes 电解质中的电腐蚀处理过程中电介质材料去除初始阶段的协同作用

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060194

A. A. Zaripov, U. B. Khalilov, Kh. B. Ashurov

引用次数: 0

Evaluation of Flavonoid Extract of Laurus nobilis Leaves as Corrosion Inhibitor for Pipelines of Reverse Osmosis Water and Study of Its Effects on Liver Enzymes and Hematological Parameters 评估作为反渗透水管道缓蚀剂的月桂叶黄酮提取物及其对肝脏酶和血液学参数的影响

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060091

Hadi Z. Al-Sawaad, Esraa A. AL-Alyauie, Arwa H. M. AL-Saeed

{"title":"Evaluation of Flavonoid Extract of Laurus nobilis Leaves as Corrosion Inhibitor for Pipelines of Reverse Osmosis Water and Study of Its Effects on Liver Enzymes and Hematological Parameters","authors":"Hadi Z. Al-Sawaad,  Esraa A. AL-Alyauie,  Arwa H. M. AL-Saeed","doi":"10.3103/S1068375523060091","DOIUrl":"10.3103/S1068375523060091","url":null,"abstract":"In this study, flavonoids were extracted from Laurus nobilis leaves, and the extract was evaluated as corrosion inhibitor for pipelines of reverse osmosis (RO) water at 25°C for different concentrations:1, 2, 3, 4, and 5 ppm, The extract demonstrated a high inhibition efficiency (96.3%) at 1 ppm. The effect of temperature on the inhibition efficiency for the optimal concentration of the flavonoid extract of 1 ppm was studied at 35, 45, and 55°C. The results revealed that the efficiency was reduced as temperature increased. Furthermore, the kinetic parameters like activation energy (E_{{text{a}}}^{*}), enthalpy of activation ΔH*, entropy of activation ΔS*, and Gibb’s free energy of activation ΔG* were calculated. Thus, the flavonoids extract of Laurus nobilis can be used as green inhibitor for corrosion because it does not contain toxic compounds. In addition, the effect of the flavonoids extract dissolved in the RO water on the liver enzymes and hematological parameters were studied after oral administration by male rabbits for 28 days. The results indicated no significant difference in the serum level of Alanine and Aspartate aminotransferase and alkaline phosphate, while the hemoglobin concentration and the red blood cells number increased after treatment with the flavonoids extract. Besides, application of the flavonoid extract revealed inhibition in the growth of Pseudomonas aeruginosa and Bacillus subtilis bacteria at 1 ppm concentration.","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"841 - 848"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631033","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

Polarimetric Features of PEPC Polymer Doped with Photoisomerizable SY3 Azodye Chromophore 掺杂了可光异构化的 SY3 叠氮染料发色团的 PEPC 聚合物的偏振特性

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060029

E. A. Achimova, V. G. Abashkin, A. Yu. Meshalkin, C. S. Losmanschii, V. S. Botnari

引用次数: 0

Macroscopic Size Effect in the Composition and Properties of Alloys of Iron Group Metals with Tungsten Prepared by Induced Codeposition: Alloy Deposition Mechanism and Its Implications 诱导共沉积制备的铁钨合金成分和性能的宏观尺寸效应：合金沉积机制及其影响

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-12-14 DOI: 10.3103/S106837552306008X

A. I. Dikusar, S. S. Belevskii

{"title":"Macroscopic Size Effect in the Composition and Properties of Alloys of Iron Group Metals with Tungsten Prepared by Induced Codeposition: Alloy Deposition Mechanism and Its Implications","authors":"A. I. Dikusar, S. S. Belevskii","doi":"10.3103/S106837552306008X","DOIUrl":"10.3103/S106837552306008X","url":null,"abstract":"By the example of electrodeposition of Co–W alloys, this work shows that observed peculiarities of induced codeposition, including the macroscopic size effect in the composition and properties of deposited layers and their nanocrystallinity, are a consequence of the fact that the deposition-inducing species (a complex of the deposition-inducing metal) has the form of a high-molecular-weight polymer. Under the conditions of (relatively) high current loading on a plating electrolyte (high volume current density), this results in involvement of water molecules in the electrochemical process, formation of oxy-hydroxide layers, hydrogenation, an increase in the alloy tungsten content as a result of the side reaction of hydrogen evolution, alkalization of near-electrode region, and polymerization of the deposition-inducing metal species. Because of the presence of macroscopic size effect (i.e., the dependences of composition and properties of deposited coatings on the electrodeposition surface area), industrial scaling up of this electrodeposition technology will require maintaining the current loading on a plating bath at a constant level, along with other parameters traditional for electrochemical materials science.","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"699 - 711"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631599","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

Enhancement of Oxide Coatings Quality Formed by Electrolytic Oxidation Methods on Inner Surfaces of Lengthy Products 提高通过电解氧化方法在长形产品内表面形成的氧化物涂层的质量

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060169

O. E. Tchufistov, V. N. Malyshev, A. N. Zolkin, E. A. Tchufistov

{"title":"Enhancement of Oxide Coatings Quality Formed by Electrolytic Oxidation Methods on Inner Surfaces of Lengthy Products","authors":"O. E. Tchufistov, V. N. Malyshev, A. N. Zolkin, E. A. Tchufistov","doi":"10.3103/S1068375523060169","DOIUrl":"10.3103/S1068375523060169","url":null,"abstract":"It is known that the methods of electrolytic oxidation, including traditional anodizing and microarc oxidation, implemented according to classical schemes in electrolytic baths with mechanical, pneumatic, and magnetic mixers, cannot provide high-quality homogeneous oxide coatings on the inner surfaces of products made from valve metal alloys. In this paper, the principal possibility of obtaining high-quality uniform coatings on the extended internal surfaces of products, including the surfaces of deep holes, when an electrolyte solution is passed through them, is revealed. It has been experimentally proved that, based on the proposed approach, it is possible to process products with deep holes, achieving a ratio of both minimum and maximum values of the thickness and the breakdown voltage of coatings on the internal and external surfaces in a range of 0.85–0.93. A possibility of forming coatings exclusively on the internal surfaces of products without changing the state of their external surfaces, moreover, without using expensive electrolytic baths—inside internal cavities of products themselves, is shown. A good correlation between the values of the thickness and of the breakdown voltage of coatings has been established. As a result, a possibility of indirectly determine the coatings thickness based on the results of their breakdown voltage measuring has been substantiated.","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"728 - 733"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631608","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

A Model of the Flow of a Nanomedium Removing Particles from the Electroerosion Zone 纳米介质从电蚀区去除颗粒的流动模型

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-10-17 DOI: 10.3103/S1068375523050058

V. S. Deeva, S. M. Slobodyan, V. S. Teterin

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The Influence of Surface Preparation on Corrosion-Protection Properties of Oxide Layers Formed on MA8 Magnesium Alloy by Microarc Oxidation 表面处理对MA8镁合金微弧氧化氧化膜防腐性能的影响

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-10-17 DOI: 10.3103/S1068375523050046

Zh. I. Bespalova, I. A. Pyaterko, V. V. Dem’yan

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Electrolyte-Plasma Nitriding of Austenitic Stainless Steel under Cathodic and Anodic Polarity 阴极和阳极极性条件下奥氏体不锈钢的电解等离子体氮化

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Surface Engineering and Applied Electrochemistry Pub Date : 2023-10-17 DOI: 10.3103/S1068375523050101

S. A. Kusmanov, I. V. Tambovskii, T. L. Mukhacheva, S. A. Silkin, S. S. Korableva, R. D. Belov, E. V. Sokova

引用次数: 0