Photocatalytic water splitting for O2 production under visible-light irradiation on BiVO4 nanoparticles in different sacrificial reagent solutions

被引：162

作者：

Ke, Dingning ^{[1
]}

Peng, Tianyou ^{[1
,2
]}

Ma, Liang ^{[1
]}

Cai, Ping ^{[1
]}

Jiang, Ping ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Hubei, Peoples R China

[2] Fuzhou Univ, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2008年 / 350卷 / 01期

关键词：

BiVO4; Photocatalytic O-2 evolution; Sacrificial reagent; Photocatalyst;

D O I：

10.1016/j.apcata.2008.08.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Monoclinic BiVO4 nanoparticles were prepared through a homogeneous co-precipitation process. The products calcined at different temperatures were characterized by X-ray diffraction, transmission electron microscopy and UV-vis diffused reflectance spectroscopy. The photocatalytic O-2 evolution efficiencies over the BiVO4 nanoparticles under visible-light (lambda > 420 nm) irradiation were also investigated comparatively by using AgNO3 and Fe(NO3)(3) as sacrificial reagents. Experimental results indicate that AgNO3 is a more effective sacrificial reagent for the photocatalytic O-2 evolution over BiVO4 than Fe(NO3)(3) due to the efficient separation of the photogenerated electron-hole pairs at the Ag/BiVO4 interfaces, but the BiVO4/Fe(NO3)(3) system is more promising in the aspect of practical applications due to its more steady photoactivity and more convenient reactivation of the photocatalyst. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：111 / 117

页数：7

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