One-step hydrothermal synthesis of novel Ag3VO4/Ag4V2O7 composites for enhancing visible-light photocatalytic performance

被引：14

作者：

Ren, Chaojun ^{[1
]}

Fan, Jian ^{[2
]}

Liu, Shixiang ^{[1
]}

Li, Wenjun ^{[1
]}

Wang, Fangzhi ^{[1
]}

Li, Hongda ^{[1
]}

Liu, Xintong ^{[1
]}

Chang, Zhidong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Chem, Beijing Key Lab Sci & Applicat Funct Mol & Crysta, Beijing 100083, Peoples R China

[2] China Natl Petr Corp, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 97期

基金：

中国国家自然科学基金;

关键词：

Z-SCHEME PHOTOCATALYST; AG-AT-AGCL; HIGHLY EFFICIENT; SILVER VANADATE; NANOCOMPOSITE PHOTOCATALYSTS; DEGRADATION; IRRADIATION; FORMALDEHYDE; NANOPARTICLES; ENHANCEMENT;

D O I：

10.1039/c6ra22150e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel direct Z-scheme Ag3VO4/Ag4V2O7 composites were synthesized by one-step hydrothermal method for the first time. The photocatalytic performance was evaluated by the degradation of methylene blue (MB) and phenol under visible light irradiation (lambda >= 420 nm). The results showed that the as-synthesized heterojunctions can significantly enhance photocatalytic activity in comparison with pure Ag3VO4. The optimum photocatalytic efficiency of 3 : 1.5 mol% Ag/V sample for the degradation MB and phenol reached up to about 100% and 62.1%, respectively. In addition, 3 : 1.25 mol% Ag/V sample had an excellent visible light response range, which occurred around 652 nm. Based on the photocurrent and the radical-trapping experiments, the possible for the enhancing photocatalytic mechanism was found to be a direct Z-scheme heterojunction system, which not only can improve the photogenerated electron-hole pairs' separation but also exhibit strong oxidation and reduction ability.

引用

页码：95156 / 95164

页数：9

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