Construction of BiVO4 nanosheets@WO3 arrays heterojunction photoanodes by versatile phase transformation strategy

被引：22
作者：
Su, Xin [1 ]
Liu, Can-jun [1 ]
Liu, Yang [2 ]
Yang, Ya-hui [3 ]
Liu, Xuan [1 ]
Chen, Shu [1 ]
机构：
[1] Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Minist Educ, Key Lab Theoret Organ Chem & Funct Mol, Xiangtan 411201, Peoples R China
[2] Cent South Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China
[3] Hunan Normal Univ, Sch Chem & Chem Engn, Changsha 410081, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2021年 / 31卷 / 02期
基金：
中国国家自然科学基金;
关键词：
photoanode; bismuth vanadate; tungsten oxide; heterojunction;
D O I：
10.1016/S1003-6326(21)65515-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
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/BiVa(4) heterojunction structure. The prepared WO3/BiVa(4) 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/BiVa(4) 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/cm(2), respectively.
引用
收藏
页码：533 / 544
页数：12
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