Modified Bi2WO6 with metal-organic frameworks for enhanced photocatalytic activity under visible light

被引：57

作者：

Zheng, Jingjing ^{[1
]}

Jiao, Zhengbo ^{[2
]}

机构：

[1] Binzhou Univ, Coll Chem & Chem Engn, Binzhou 256603, Peoples R China

[2] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2017年 / 488卷

基金：

中国国家自然科学基金;

关键词：

Nanocomposites; p-n heterojunctions; Metal-organic frameworks; Photocatalysis; SELECTIVE PHOTOELECTROCHEMICAL RESPONSE; HYDROGEN-PRODUCTION; HIGH-PERFORMANCE; CHARGE-TRANSFER; IRRADIATION; HETEROJUNCTION; HETEROSTRUCTURES; NANOPARTICLES; DEGRADATION; EVOLUTION;

D O I：

10.1016/j.jcis.2016.11.007

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：

Bi2WO6/MIL-100(Fe) heterostructures with visible light response have been synthesized for the first time through a facile hydrothermal method. The as-synthesized Bi2WO6/MIL-100(Fe) nanocomposites were characterized using the powder X-ray diffraction, high resolution transmission electron microscopy, scanning electron microscopy, UV-vis diffuse reflectance spectra, and N-2 adsorption-desorption techniques, respectively. The composition of Bi2WO6/MIL-100(Fe) nanocomposites has been varied and the performance was evaluated by photodegrading salicylic acid under visible-light irradiation. It is found that the MIL-100(Fe)-Bi2WO6 systems exhibit much higher photocatalytic activity than pure Bi2WO6 and MIL-100(Fe). The enhanced photocatalytic performance of Bi2WO6/MIL-100(Fe) heterostructures may be ascribed to the formation of p-n heterojunctions between Bi2WO6 and MIL-100(Fe), which result in the effective separation of charge carriers. After 5-time recycling for the photodegradation of salicylic acid, there was not significant decrease in the photocatalytic activity, implying that the as-prepared photocatalysts are highly stable. (C) 2016 Elsevier Inc. All rights reserved.

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页码：234 / 239

页数：6

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