کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7920145 | 1511487 | 2018 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of zinc precursors on the hydrogen evolution reaction and electrochemical corrosion studies of ZnWO4 nanoparticles synthesized by hot injection method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
ZnWO4 nanoparticles were synthesized by a hot injection method using different zinc precursors (zinc nitrate, zinc acetate, zinc sulphate and zinc chloride) with sodium tungstate. Similarly, the ZnWO4 particles were prepared by co-precipitation and solid-state method for comparative analysis. The phase formation temperature of ZnWO4 was identified through thermal analysis. X-Ray diffraction (XRD) analysis enumerates that the formation of a single-phase monoclinic wolframite structure with the space group P2/c. The characteristic functional groups of Zn-O, Zn-O-W, and W-O were identified through Fourier Transform Infrared Spectroscopy (FTIR). The microscopic images revealed that the formation of spherical shape particles in size range between 60 and 100â¯nm. The room temperature electrical conductivity was measured using LCR meter, and it shows that the conductivity is in the range of 2.2â¯Ãâ¯10â5 to 6.2â¯Ãâ¯10â6â¯S.cmâ1. The calculated corrosion rate of ZnWO4 using Tafel Polarization curve in 1â¯M H2SO4 at 1â¯mVâ¯sâ1 was 0.2554 mmpy. The electrocatalytic activity towards the hydrogen evolution reaction (HER) was studied using linear sweep voltammogram in 1â¯M H2SO4 solution at a scan rate of 1â¯mVâ¯sâ1. Further, the zinc acetate precursor assisted particles have shown a low onset potential (0.42â¯V) and higher current density (â228.52â¯mA cmâ2) in the potential range of 0 to â1.0â¯V compared with other samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 119, August 2018, Pages 210-219
Journal: Journal of Physics and Chemistry of Solids - Volume 119, August 2018, Pages 210-219
نویسندگان
A. Shanmugavani, S. Gowrimeena, P. Rupa Kasturi, S. Yuvaraj, L. John Berchmans, R. Kalai Selvan,