首页|一种通用的相转换策略构建BiVO4纳米薄片@WO3阵列异质结光阳极

一种通用的相转换策略构建BiVO4纳米薄片@WO3阵列异质结光阳极

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提出一种制备BiVO4纳米薄片@WO3纳米棒和纳米片薄膜的相转换策略.这种策略包括三步水热过程(WO3→WO3/Bi2WO6→WO3/BiVO4).表征结果表明:大量的BiVO4纳米薄片原位生长在WO3纳米棒和纳米片阵列薄膜表面,从而形成WO3/BiVO4异质结.制备的WO3/BiVO4异质结薄膜作为光阳极被用于光电化学分解水,并展现出优异的光电化学活性.在可见光照射和没有沉积助催化剂的情况下,WO3/BiVO4纳米棒和纳米片光阳极的光电流密度分别达到约1.56和1.20 mA/cm2(V=1.23 V(vs RHE)).
Construction of BiVO4 nanosheets@WO3 arrays heterojunction photoanodes by versatile phase transformation strategy
A versatile phase transformation strategy was proposed to synthesize novel BiVO4 nanosheets (NSs)@WO3 nanorod (NR) and nanoplate (NP) arrays films. The strategy was carried out by following a three-step hydrothermal process (WO3→WO3/Bi2WO6→WO3/BiVO4). According to the characterization results, plenty of BiVO4 NSs grew well on the surface of WO3 NR and NP arrays films, thus forming the WO3/BiVO4 heterojunction structure. The prepared WO3/BiVO4 heterojunction films were used as the photoanodes for the photoelectrochemical (PEC) water splitting. As indicated by the results, the photoanodes exhibited an excellent PEC activity. The photocurrent densities of the WO3/BiVO4 NR and NP photoanodes at 1.23 V (vs RHE) without cocatalyst under visible light illumination reached up to about 1.56 and 1.20 mA/cm2, respectively.

photoanodebismuth vanadatetungsten oxideheterojunction

苏昕、刘灿军、刘洋、杨亚辉、刘玄、陈述

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湖南科技大学化学化工学院理论有机化学与功能分子教育部重点实验室,湘潭 411201

中南大学化学化工学院,长沙 410083

湖南师范大学化学化工学院,长沙 410081

光阳极 钒酸铋 氧化钨 异质结

financial supports from the National Natural Science Foundation of Chinafinancial supports from the National Natural Science Foundation of Chinafinancial supports from the National Natural Science Foundation of China

218080515190435621703062

2021

10.1016/S1003-6326(21)65515-2

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(2)
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