New insight into the enhanced visible light-driven photocatalytic activity of Pd/PdCl2-doped Bi2WO6 photocatalysts

被引：48

作者：

Meng, Xiangchao ^{[1
]}

Qin, Hanna ^{[1
]}

Zhang, Zisheng ^{[1
]}

机构：

[1] Univ Ottawa, Dept Chem & Biol Engn, Ottawa, ON K1N 6N5, Canada

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2018年 / 513卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Photocatalysis; Bi2WO6; Pd/PdCl2; Phenol degradation; Surface plasmon resonance; REDUCED GRAPHENE OXIDE; HIERARCHICAL NANOSTRUCTURES; HYDROTHERMAL SYNTHESIS; ACETIC-ACID; TIO2; DEGRADATION; PHENOL; SEMICONDUCTOR; COMPOSITES; PERFORMANCE;

D O I：

10.1016/j.jcis.2017.12.009

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：

A bismuth-based compound, Bi2WO6, was successfully synthesized using a facile hydrothermal method. Aiming to improve its photocatalytic activity under visible light irradiation, Pd/PdCl2 was first doped onto the surface of Bi2WO6 via a photo-reduction method. The prepared Pd/PdCl2-Bi2WO6 samples were characterized based on crystal structures, chemical states, atomic compositions, and morphologies as well as photoabsorption properties. In the screening tests for photocatalytic activity, the 4% Pd-Bi2WO6 sample performed with the highest removal efficiency with respect to the degradation of phenol in wastewater. This sample exhibited better in complete degradation of phenol under visible light irradiation, compared to TiO2 under ultraviolet irradiation. A possible mechanism for the enhanced visible light-driven photo catalytic activity by means of loading Bi2WO6 with Pd was also suggested. This work sheds light on the potential applications of noble metal nanoparticles in visible light-driven photocatalysis. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：877 / 890

页数：14

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