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

共 19 条

[11] Morphological reform of ZnO particles induced by coupling with MOx (M=V,W,Ce) and the effects on photocatalytic activity [J].

Li, D ;

Haneda, H ;

Ohashi, N ;

Saito, N ;

Hishita, S .

THIN SOLID FILMS, 2005, 486 (1-2) :20-23

[12] Synthesis of N-Doped ZnO by grinding and subsequent heating ZnO-urea mixture [J].

Lu, JF ;

Zhang, QW ;

Wang, J ;

Saito, F ;

Uchida, M .

POWDER TECHNOLOGY, 2006, 162 (01) :33-37

[13] Solar photocatalytic degradation of azo dye:: comparison of photocatalytic efficiency of ZnO and TiO2 [J].

Sakthivel, S ;

Neppolian, B ;

Shankar, MV ;

Arabindoo, B ;

Palanichamy, M ;

Murugesan, V .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2003, 77 (01) :65-82

[14] SPECTROSCOPIC, PHOTOCONDUCTIVITY, AND PHOTOCATALYTIC STUDIES OF TIO2 COLLOIDS - NAKED AND WITH THE LATTICE DOPED WITH CR3+, FE3+, AND V5+ CATIONS [J].

SERPONE, N ;

LAWLESS, D ;

DISDIER, J ;

HERRMANN, JM .

LANGMUIR, 1994, 10 (03) :643-652

[15] Recent topics in photoelectrochemistry: achievements and future prospects [J].

Tryk, DA ;

Fujishima, A ;

Honda, K .

ELECTROCHIMICA ACTA, 2000, 45 (15-16) :2363-2376

[16]

ULLAH R, 2008, J HAZARD MATER, V35, P4305

[17] IMPACT OF PB DOPING ON THE OPTICAL AND ELECTRONIC-PROPERTIES OF ZNO POWDERS [J].

VANHEUSDEN, K ;

WARREN, WL ;

VOIGT, JA ;

SEAGER, CH ;

TALLANT, DR .

APPLIED PHYSICS LETTERS, 1995, 67 (09) :1280-1282

[18] The characteristics and photocatalytic activities of silver doped ZnO nanocrystallites [J].

Wang, RH ;

Xin, JH ;

Yang, Y ;

Liu, HF ;

Xu, LM ;

Hu, JH .

APPLIED SURFACE SCIENCE, 2004, 227 (1-4) :312-317

[19] Photocatalytic decolorization of methylene blue over Zn1-xCoxO under visible light irradiation [J].

Xiao, Qi ;

Zhang, Jiang ;

Xiao, Chong ;

Tan, Xiaoke .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2007, 142 (2-3) :121-125

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