Preparation of Ag/UiO-66-NH2 and its application in photocatalytic reduction of Cr(VI) under visible light

被引：37
|
作者：
Zhang, Weiwei [3 ]
Wang, Lingzhi [1 ,2 ]
Zhang, Jinlong [1 ,2 ]
机构：
[1] East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China
[2] East China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China
[3] East China Univ Sci & Technol, Shanghai 200237, Peoples R China
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2019年 / 45卷 / 10期
基金：
中国国家自然科学基金;
关键词：
UiO-66-NH2; Ag; Photocatalysis; Cr(VI) reduction; METAL-ORGANIC FRAMEWORKS; HYDROGEN-PRODUCTION; CATALYTIC-ACTIVITY; MOF; ADSORPTION; VAPOR;
D O I：
10.1007/s11164-019-03865-6
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Herein, UiO-66-NH2 as a kind of metal organic framework materials (MOFs) is first prepared via a facile solvothermal method and then loaded with Ag nanoparticles to form an Ag/UiO-66-NH2 composite, which is applied as the photocatalyst for the visible-light driven reduction of Cr(VI). The UV-Vis diffuse reflectance spectroscopy, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction and photocurrent response analyses are performed to systematically characterize the composite. Ag nanoparticles with an average size of ca. 11.5 nm are distributed on the surface of UiO-66-NH2. The composite shows improved visible-light absorption ability and enhanced separation efficiency of photo-generated charge carriers. As a result, better photocatalytic Cr(VI) reduction is achieved on Ag/UiO-66-NH2 under the visible-light irradiation compared with UiO-66-NH2.
引用
收藏
页码：4801 / 4811
页数：11
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