Preparation, characterization and photocatalytic activity of Co-doped ZnO powders

被引：149

作者：

Xu, Chao ^{[1
]}

Cao, Lixin ^{[1
]}

Su, Ge ^{[1
]}

Liu, Wei ^{[1
]}

Qu, Xiaofei ^{[1
]}

Yu, Yaqin ^{[1
]}

机构：

[1] Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Shandong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 497卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

ZnO; Hydrothermal; Characterization; Photocatalytic; MAGNETIC SEMICONDUCTOR; AZO-DYE; DEGRADATION; TIO2; ZN1-XCOXO;

D O I：

10.1016/j.jallcom.2010.03.076

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：

ZnO powders with different Co(2+) doping concentrations (0, 0 5, 1, 3 and 5 mol%) were prepared by the hydrothermal method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). UV-vis diffuse reflectance spectrometer, and photochemical reaction instrument The results show that the ZnO powders are hexagonal wurtzite structures and their crystallization decrease with the increase of Co(2+) doping concentration The products are spherical which have diameter of about 200 nm, and their absorption edge shift to longer wavelength with the increase of the Co(2+) concentration. The photocatalytic activities of the powders are evaluated using a basic organic dye, methyl orange (MO) Compared with undoped ZnO, It is found that the photocatalytic properties of the Co-doped ZnO have been improved greatly. When the doping concentration is 3 mol%, the degradation ratio of MO can reach 78% after reacting for 240 mm. (C) 2010 Elsevier B V. All rights reserved

引用

页码：373 / 376

页数：4

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