Zhannur Myltykbayeva, José M. López Nieto, Beatriz M. Moreno-Torralbo, P. Concepción, Akerke Abylaikhan, Atıf Koca
{"title":"Optimizing the Electrocatalytic Hydrogen Production with Vanadyl Porphyrin Impregnated on Mesoporous SiO2 Nanoparticles","authors":"Zhannur Myltykbayeva, José M. López Nieto, Beatriz M. Moreno-Torralbo, P. Concepción, Akerke Abylaikhan, Atıf Koca","doi":"10.1016/j.electacta.2025.145686","DOIUrl":null,"url":null,"abstract":"Vanadyl octaethyl porphyrin (VOP) impregnated on SiO<sub>2</sub> nanoparticles (<strong>SiO<sub>2</sub>@VOP</strong>) was investigated as an electrocatalyst for the water-splitting reaction for the cathodic hydrogen evolution reaction (HER). Multi-valent oxidation states of VO<sup>2+</sup> center and multi-electron transfer properties of the porphyrin ring made this complex a potential candidate for the electrocatalytic processes. Altering the electrode modification protocol by changing the amount of the VOP, carbon black (CB), and Nafion (Nf) binder on the modification influenced the active sites, thus consequently enhancing the electrocatalytic activity of <strong>SiO<sub>2</sub>@VOP</strong> composites. Electrocatalytic HER measurements indicated excellent activity with low overpotential (108 mV), small Tafel slope (98 mV/dec), and high current density stability with the GCE/CB@<strong>SiO<sub>2</sub>@VOP(B)</strong> electrode.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"39 1","pages":""},"PeriodicalIF":5.5000,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochimica Acta","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.electacta.2025.145686","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
Abstract
Vanadyl octaethyl porphyrin (VOP) impregnated on SiO2 nanoparticles (SiO2@VOP) was investigated as an electrocatalyst for the water-splitting reaction for the cathodic hydrogen evolution reaction (HER). Multi-valent oxidation states of VO2+ center and multi-electron transfer properties of the porphyrin ring made this complex a potential candidate for the electrocatalytic processes. Altering the electrode modification protocol by changing the amount of the VOP, carbon black (CB), and Nafion (Nf) binder on the modification influenced the active sites, thus consequently enhancing the electrocatalytic activity of SiO2@VOP composites. Electrocatalytic HER measurements indicated excellent activity with low overpotential (108 mV), small Tafel slope (98 mV/dec), and high current density stability with the GCE/CB@SiO2@VOP(B) electrode.
期刊介绍：
Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
