Enhanced Hydrogen Evolution Reaction Performances of Ultrathin CuBi2O4 Nanoflakes

被引：7

作者：

Sekar, Sankar ^{[1
,2
]}

Sadhasivam, Sutha ^{[3
]}

Nangai, E. Kayalvizhi ^{[4
]}

Saravanan, S. ^{[4
]}

Kim, Deuk Young ^{[1
,2
]}

Lee, Sejoon ^{[1
,2
]}

机构：

[1] Dongguk Univ Seoul, Dept Semicond Sci, Seoul 04620, South Korea

[2] Dongguk Univ Seoul, Quantum Funct Semicond Res Ctr, Seoul 04620, South Korea

[3] KS Rangasamy Coll Technol, Ctr Nano Sci & Technol, Tiruchengode 637215, Tamil Nadu, India

[4] K Ramakrishnan Coll Technol, Dept Mech Engn, Tiruchirappalli 621112, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 2023年 / 2023卷

基金：

新加坡国家研究基金会;

关键词：

REDUCED GRAPHENE OXIDE; PHOTOCATALYTIC PERFORMANCE; ELECTROCATALYTIC ACTIVITY; EFFICIENT; NANOPARTICLES; NANOCOMPOSITES; MICROSPHERES; HETEROJUNCTION; PHOTOCATHODES; COMPOSITE;

D O I：

10.1155/2023/5038466

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Semiconductor catalysts play a potential role for efficient electrocatalytic hydrogen production. In this work, copper bismuth oxide (CuBi2O4) nanostructures were synthesized via the coprecipitation method using two different Cu precursors: one is Cu(NO3)(3)center dot 9H(2)O and the other is CuCl2. When using Cu(NO3)(3)center dot 9H(2)O, the sample showed an interconnected and aggregated irregular spherical CuBi2O4 nanoparticle structure. On the other hand, the CuCl2-derived CuBi2O4 sample exhibited an interconnected ultrathin nanoflake structure. The CuBi2O4 nanoflakes displayed a higher electrochemically active surface area (160 cm(2)) than the CuBi2O4 nanoparticle (116 cm(2)). Accordingly, the CuBi2O4 nanoflakes revealed an excellent hydrogen evolution reaction performance with a low Tafel slope (117 mV/dec) and a small overpotential (384 mV at 10 mA/cm(2) in 1 M KOH). These results specify that the CuBi2O4 nanoflakes are a suitable electrocatalyst material for high-performance water splitting.

引用

页数：10

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