Understanding Reaction Kinetics by Tailoring Metal Co-catalysts of the BiVO4 Photocatalyst

被引：29

作者：

Choe, Hye Rin ^{[1
,2
]}

Kim, Ji Hyeon ^{[1
,2
]}

Ma, Ahyeon ^{[1
,2
]}

Jung, Haeun ^{[1
,2
]}

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

Nam, Ki Min ^{[1
,2
]}

机构：

[1] Pusan Natl Univ, Dept Chem, Busan 46241, South Korea

[2] Pusan Natl Univ, Chem Inst Funct Mat, Busan 46241, South Korea

来源：

ACS OMEGA | 2019年 / 4卷 / 15期

基金：

新加坡国家研究基金会;

关键词：

DOPED BIVO4; DEGRADATION; WATER; NANOPARTICLES; MECHANISMS; FACILE;

D O I：

10.1021/acsomega.9b02454

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, the reaction mechanisms of metal-semiconductor composites used as photocatalysts were demonstrated by first preparing bismuth vanadate (BiVO4) and then performing photodeposition of metal nanoparticles. The photocatalytic activity of metal-BiVO4 (M-BiVO4, where M = Pt, Au, Ag) composites were evaluated through dye decomposition under UV-vis irradiation. The photocatalytic efficiency was significantly enhanced after Pt deposition as compared to other M-BiVO4 composites. The size or shape of BiVO4 was not the main factor for the efficiency of Pt-BiVO4. However, a deposited Pt co-catalyst was essential for the photocatalytic decomposition of dye on the BiVO4 surface. Radical scavengers were employed to elucidate the reaction mechanism during the photocatalytic reaction with the Pt-BiVO4 composite. This study provides details on the reaction mechanism of the photocatalytic reaction on Pt at the BiVO4 surface under solar irradiation.

引用

页码：16597 / 16602

页数：6

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