Journal of Applied Electrochemistry最新文献_第4页

Synthesis of Pd-Cu/TPPCu electrocatalyst for direct ethanol fuel cell applications 直接乙醇燃料电池用Pd-Cu/TPPCu电催化剂的合成

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Journal of Applied Electrochemistry Pub Date : 2023-11-03 DOI: 10.1007/s10800-023-02003-w

S. Irazoque, A. López-Suárez, C. K. Zagal-Padilla, S. A. Gamboa

{"title":"Synthesis of Pd-Cu/TPPCu electrocatalyst for direct ethanol fuel cell applications","authors":"S. Irazoque, A. López-Suárez, C. K. Zagal-Padilla, S. A. Gamboa","doi":"10.1007/s10800-023-02003-w","DOIUrl":"https://doi.org/10.1007/s10800-023-02003-w","url":null,"abstract":"Abstract In this study, the electro-oxidation reaction of ethanol over Pd–Cu supported on Cu porphyrin (TPPCu) was investigated. The catalyst was synthesized using the microwave-assisted polyol method and physicochemically characterized by XRD, XPS, SEM, EDS, TEM, EDAX, UV–Vis, FTIR, and RBS. A Cu-enriched catalyst with Cu 3 Pd, Pd,Cu, and TPPCu phases was identified using XRD and XPS. However, according to the RBS results, the catalytic surface was enriched with Pd, indicating that the interaction between TPPCu and Pd–Cu allowed the presence of Pd on the surface, thus enhancing the catalytic response of the material. This synthesis prevented the deprotonation of porphyrin on the electrocatalyst, as confirmed by XPS analysis. Electrochemical studies based on cyclic voltammetry and electrochemical impedance spectroscopy were used to investigate the response of the catalyst to variations in the scan rate and increasing ethanol concentration. The electrochemical response of PdCu/TPPCu improved with an increasing number of cycles, indicating improved mass transport, thus improving its electrochemical response and tolerance to CO contamination. This catalyst exhibited a high electroactive surface area of 49.4 m 2 /g, which could be related to the presence of TPPCu as a support. The behavior of the catalyst on the anode of a fuel cell fed with ethanol, bioethanol, and bioethanol residues was evaluated. Graphical Abstract","PeriodicalId":14887,"journal":{"name":"Journal of Applied Electrochemistry","volume":"36 14","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135819898","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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Electrochemical determination of 25-hydroxyvitamin D3 using conductive porous template based on gold-modified metal organic framework@mesoporous silica particles 基于金修饰金属有机framework@mesoporous二氧化硅颗粒的导电多孔模板电化学测定25-羟基维生素D3

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Journal of Applied Electrochemistry Pub Date : 2023-11-03 DOI: 10.1007/s10800-023-01995-9

Amandeep Kaur, Rakesh Kumar, Ganga Ram Chaudhary, Nirmal Prabhakar

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Synergistic design of Mo-intercalated NiSe2: a binary transition metal chalcogenide for highly efficient bifunctional seawater electrolysis 用于高效双功能海水电解的含钼过渡金属硫族化合物nis2的协同设计

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Journal of Applied Electrochemistry Pub Date : 2023-11-02 DOI: 10.1007/s10800-023-02016-5

Jeffrey Joseph John Jeya Kamaraj, Lawrence Daniel Stephen Tamil, Senthil Pandian Muthu, Ramasamy Perumalsamy

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Iron alloying improved electrocatalytic activity of Cu2Cu1−xFexSnS4 counter electrodes in dye-sensitized solar cells 铁合金化提高了Cu2Cu1−xFexSnS4对电极在染料敏化太阳能电池中的电催化活性

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Journal of Applied Electrochemistry Pub Date : 2023-11-02 DOI: 10.1007/s10800-023-02006-7

K. P. Li, Z. Z. Liu, C. Wang, Y. Q. Zhang, X. B. Yang, B. Zhou, Z. X. Xie, Z. Q. Duan, Y. M. Hu

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Aiming to a smart agriculture through the electrochemical impedance of a chitosan-molybdate membrane as a function of available phosphate species 旨在通过壳聚糖-钼酸盐膜的电化学阻抗作为可用磷酸盐的函数来实现智能农业

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Journal of Applied Electrochemistry Pub Date : 2023-11-02 DOI: 10.1007/s10800-023-02002-x

M. A. Beltrán-Ortega, M. T. Oropeza-Guzmán, J. C. Calva-Yáñez

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Effect of inter-critical annealing atmosphere on microstructure and subsequent corrosion behavior of hot-dip galvanized Mn containing high-strength steel 临界间退火气氛对含锰高强钢热镀锌组织及后续腐蚀行为的影响

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Journal of Applied Electrochemistry Pub Date : 2023-10-31 DOI: 10.1007/s10800-023-02011-w

Harikrishna Kancharla, G. K. Mandal, Nisheeth Kr. Prasad, K. Vishwanath, B. Bhushan, Kirtiratan Godbole, S. S. Singh, K. Mondal

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The effect of lanthanum chloride on the electrocrystallization behavior of cobalt and grain refinement in deposition layers 氯化镧对钴电结晶行为及沉积层晶粒细化的影响

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Journal of Applied Electrochemistry Pub Date : 2023-10-31 DOI: 10.1007/s10800-023-02000-z

Yang-tao Xu, Yin Peng, Jing-min Dai, Hai-yang Du, Liang Pei

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Hydrothermal synthesis of rGO-TiO2 nanocomposites for electrochemical performance 水热合成rGO-TiO2纳米复合材料的电化学性能研究

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Journal of Applied Electrochemistry Pub Date : 2023-10-27 DOI: 10.1007/s10800-023-01998-6

Sumitra Nongthombam, Bibhu P. Swain

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Effect of cerium chloride on electric crystallization behavior and grain refinement of electrodeposited copper 氯化铈对电沉积铜电结晶行为及晶粒细化的影响

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Journal of Applied Electrochemistry Pub Date : 2023-10-26 DOI: 10.1007/s10800-023-01984-y

Xu Yang-tao, Du Hai-yang, Pei Liang, Dai Jin-ming, Peng Yin

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Biodegradable iron-based foams prepared by the space holder technique using urea 利用尿素制备空间支架技术制备可生物降解的铁基泡沫

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Journal of Applied Electrochemistry Pub Date : 2023-10-21 DOI: 10.1007/s10800-023-01993-x

V. Čákyová, R. Gorejová, R. Macko, O. Petruš, T. Sopčák, M. Kupková, F. Kaľavský, R. Oriňaková

{"title":"Biodegradable iron-based foams prepared by the space holder technique using urea","authors":"V. Čákyová, R. Gorejová, R. Macko, O. Petruš, T. Sopčák, M. Kupková, F. Kaľavský, R. Oriňaková","doi":"10.1007/s10800-023-01993-x","DOIUrl":"https://doi.org/10.1007/s10800-023-01993-x","url":null,"abstract":"Abstract Iron-based degradable biomaterials have attracted much attention as next-generation bone implants due to their excellent mechanical properties and good biocompatibility. Many studies are now focusing on the preparation and detailed study of porous versus non-porous degradable materials. Porous degradable biomaterials have many advantages over the non-porous ones owing to their structure, which allows easier bone tissue ingrowth. The aim of this work was to prepare Fe-based biodegradable porous materials in a cost-effective way via powder metallurgy technique using urea space holders. Five different samples with increasing space holder weight ratio (up to 20 wt%) were prepared. Surface morphology and sample structure were studied using the optical microscopy, Raman spectroscopy, and scanning electron microscopy (SEM) with energy-dispersive X-ray analysis (EDX). Electrochemical corrosion rate analysis confirmed that the samples corroded faster with increasing number of pores. With an increasing amount of urea, the number of pores increased proportionally, which can potentially be used to tune the corrosion rate. However, mechanical integrity of the samples was not maintained when more than 10 wt% of space holder was used. Graphical abstract","PeriodicalId":14887,"journal":{"name":"Journal of Applied Electrochemistry","volume":"63 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135511706","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