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

被引：58
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.
引用
收藏
页码：234 / 239
页数：6
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