Synthesis And Characterization Of Zn-Co-Layered Double Hydroxide Intercalated With Vanadate And Molybdate Anions As A More Efficient Electrocatalysts For Oxygen Evolution Reaction
Kamellia Nejati - Alireza Akbari - Soheila Davari - Karim Asadpour- Zeynali - Zolfaghar Rezvani
Kamellia Nejati - Alireza Akbari - Soheila Davari - Karim Asadpour- Zeynali - Zolfaghar Rezvani
Chemistry Department, Payame Noor University, PO Box 19395-3697Tehran, Iran - Chemistry Department, Payame Noor University, PO Box 19395-3697Tehran, Iran - Chemistry Department, Payame Noor University, PO Box 19395-3697Tehran, Iran - Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran - Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
زبان مقاله : انگلیسی |
تعداد صفحات مقاله : 1 صفحه |
نوع مقاله : چکیده |
ISC کد مقاله در : ISC4026_524537
چکیده
Electrochemical water splitting has great potential in the storage of intermittent energy from the sun, wind, or other renewable sources for sustainable clean energy applications. However, the anodic oxygen evolution reaction (OER) usually determines the efficiency of practical water electrolysis due to its sluggish four-electron process. Layered double hydroxides (LDHs) have attracted increasing attention as one of the ideal and promising electrocatalysts for water oxidation due to their excellent activity, high stability in basic conditions, as well as their earth-abundant compositions. In the present work, vanadate and molybdate anions were intercalated into Zn–Co layered double hydroxides using the co-precipitation method. The obtained VO4-LDH and MoO4–LDH nanohybrids were characterized by Powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and X-ray energy dispersive spectroscopy (EDS) methods to get information about the structure, composition and morphology. After physicochemical characterization of the prepared samples, the LDHs were used as an efficient electrocatalyst material for water oxidation in alkali solution. In electrochemical water splitting, the obtained results show that the Zn–Co–MoO4-LDH exhibits good OER activity, which is expressed as a low onset overpotential, small Tafel slope, and large exchange current density. At the overpotential of 0.42 (V vs. SCE), the current density of the Zn–Co–MoO4-LDH nanosheets is about 188.43 mA cm−2, which is significantly higher than that of the Zn–Co–VO4–LDH and Zn–Co–NO3–LDH nanoparticles[1-4].کليدواژه ها
Zn-Co-NO3-LDH, Intercalation, Vanadate, Molybdate, Water oxidation, Oxygen evolution reactionنحوه استناد به مقاله
در صورتی که می خواهید در اثر پژوهشی خود به این مقاله ارجاع دهید، به سادگی می توانید از عبارت زیر در بخش منابع و مراجع استفاده نمایید:Nejati , Kamellia , 1398 , Synthesis And Characterization Of Zn-Co-Layered Double Hydroxide Intercalated With Vanadate And Molybdate Anions As A More Efficient Electrocatalysts For Oxygen Evolution Reaction , دومین کنفرانس ملی کاتالیست انجمن شیمی ایران
انتشار دهنده
محل انتشار : دومین کنفرانس ملی کاتالیست انجمن شیمی ایرانمشخصات برگزارکننده همایش : دانشگاه خوارزمي
تعداد مقالات : 215
کد اختصاصی :
۹۸۱۹۱-۲۸۷۱۶
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