Flower-like 3D CuO microsphere acting as photocatalytic water oxidation catalyst

被引：78
作者：
Du, Xiaoqiang [1 ,2 ]
Huang, Jingwei [1 ,2 ]
Feng, Yingying [1 ,2 ]
Ding, Yong [1 ,2 ,3 ]
机构：
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Gansu, Peoples R China
[2] Lanzhou Univ, Coll Chem Chem Engn, Lanzhou 730000, Gansu, Peoples R China
[3] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Gansu, Peoples R China
来源：
CHINESE JOURNAL OF CATALYSIS | 2016年 / 37卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; Water oxidation; Metal catalyst; CuO microsphere; Stability; EFFICIENT CATALYST; COPPER-OXIDE; POLYOXOMETALATE; COMPLEXES; REDUCTION; PERFORMANCE; STABILITY; CLUSTERS; CORE; PH;
D O I：
10.1016/S1872-2067(15)61012-9
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Flower-like 3D CuO microspheres were synthesized and used to photo-catalyze water oxidation under visible light. The structure of the CuO microspheres was characterized by scanning electron microscopy, transmission electron microscopy, infrared, powder X-ray diffraction, electron dispersive spectroscopy, Raman and X-ray photoelectron spectroscopy (XPS). This is the first time that a copper oxide was demonstrated as a photocatalytic water oxidation catalyst under near neutral conditions. The catalytic activity of CuO microspheres in borate buffer shows the best performance with O-2 yield of 11.5%. No change in the surface properties of CuO before and after the photocatalytic reaction was seen by XPS, which showed good catalyst stability. A photocatalytic water oxidation reaction mechanism catalyzed by the CuO microspheres was proposed. (C) 2016, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：123 / 134
页数：12
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