Co/Fe-bimetallic organic framework-derived carbon-incorporated cobalt-ferric mixed metal phosphide as a highly efficient photocatalyst under visible light

被引：71

作者：

Hu, Bin ^{[1
]}

Yuan, Jin-Yun ^{[1
]}

Tian, Jia-Yue ^{[1
]}

Wang, Minghua ^{[1
]}

Wang, Xue ^{[1
]}

He, Linghao ^{[1
]}

Zhang, Zhihong ^{[1
]}

Wang, Zhuo-Wei ^{[1
]}

Liu, Chun-Sen ^{[1
]}

机构：

[1] Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface Sci, Collaborat Innovat Ctr Environm Pollut Control &, Zhengzhou 450002, Henan, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2018年 / 531卷

基金：

中国国家自然科学基金;

关键词：

Bimetallic Co/Fe-MOF; Cobaltous phosphate; Ferric phosphate; Photocatalytic activity; RhB degradation; RHODAMINE-B; INDUCED PHOTODEGRADATION; CATALYST ELECTRODE; NANOSHEETS ARRAY; WASTE-WATER; HYDROGEN; ADSORPTION; DYES; DEGRADATION; PERFORMANCE;

D O I：

10.1016/j.jcis.2018.07.037

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 new bimetallic Co/Fe-MOF was synthesized and phosphatized to produce a visible-light-active Co/Fe binary metal phosphide embedded in a mesoporous carbon matrix (denoted by CoP/Fe2P@mC). The results of X-ray diffraction and photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy reveal the formation of CoP and Fe2P nanoparticles together with the Co and Fe metallic state. Combining the high electron-hole separation rate of Fe2P@mC, fast electron transfer of CoP@mC, and the strong adsorption of mesoporous carbon, the as-prepared CoP/Fe2P@mC catalyst exhibits substantially enhanced photocatalytic activity toward rhodamine B (RhB) degradation under visible light irradiation. Visible light harvesting efficiency is enhanced by the suitable bandgap structure of the CoP/Fe2P@mC photocatalyst. Moreover, the possible photocatalytic mechanism of CoP/Fe2P@mC toward RhB degradation was proposed on the basis of radical trapping and electron spin resonance results. This finding illustrates a potential utilization of bimetallic MOF-derived metal phosphide as a photocatalyst to remove dye pollutants in the environment. (C) 2018 Elsevier Inc. All rights reserved.

引用

页码：148 / 159

页数：12

共 63 条

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