New photocatalysts based on MIL-53 metal-organic frameworks for the decolorization of methylene blue dye

被引：444

作者：

Du, Jing-Jing ^{[1
,2
]}

Yuan, Yu-Peng ^{[1
,2
]}

Sun, Jia-Xin ^{[1
,2
]}

Peng, Fu-Min ^{[1
,2
]}

Jiang, Xia ^{[1
,2
]}

Qiu, Ling-Guang ^{[1
,2
]}

Xie, An-Jian ^{[1
,2
]}

Shen, Yu-Hua ^{[1
,2
]}

Zhu, Jun-Fa ^{[3
]}

机构：

[1] Anhui Univ, Lab Adv Porous Mat, Hefei 230039, Peoples R China

[2] Anhui Univ, Sch Chem & Chem Engn, Hefei 230039, Peoples R China

[3] Univ Sci & Technol China, Natl Synchrocyclotron Radiat Lab, Hefei 230029, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 190卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Metal-organic frameworks; MIL-53; Photocatalyst; Methylene blue; ADSORPTION; SEPARATION; DEGRADATION; OXIDATION; REMOVAL;

D O I：

10.1016/j.jhazmat.2011.04.029

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

The photocatalytic decolorization of methylene blue dye in aqueous solution using a novel photocatalyst MIL-53(Fe) metal-organic frameworks was investigated under UV-vis light and visible light irradiation. The effect of electron acceptor H2O2, KBrO3 and (NH4)(2)S2O8 addition on the photocatalytic performance of MIL-53(Fe) was also evaluated. The results show that MIL-53(Fe) photocatalyst exhibited photocatalytic activity for MB decolorization both under UV-vis light and visible light irradiation, and the MB decolorization over MIL-53(Fe) photocatalyst followed the first-order kinetics. The addition of different electron acceptors all enhances the photocatalytic performance of MIL-53(Fe) photocatalyst, and the enhanced rate follows the order of H2O2 > (NH4)(2)S2O8 > KBrO3 under UV-vis light irradiation, while in the order of (NH4)(2)S2O8 > H2O2 > KBrO3 under visible light irradiation. Moreover. MIL-53(Fe) did not exhibit any obvious loss of the activity for MB decolorization during five repeated usages. The photocatalytic activities over MIL-53(M) (M = Al, Fe), the isostructure to MIL-53(Fe), indicate that the metal centers show nil effect on the photocatalytic activity of MIL-53(M) photocatalysts. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：945 / 951

页数：7

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