ZnO/CdO composite nanorods for photocatalytic degradation of methylene blue under visible light

被引:228
作者
Saravanan, R. [1 ]
Shankar, H. [1 ]
Prakash, T. [1 ]
Narayanan, V. [2 ]
Stephen, A. [1 ]
机构
[1] Univ Madras, Dept Nucl Phys, Madras 600025, Tamil Nadu, India
[2] Univ Madras, Dept Inorgan Chem, Madras 600025, Tamil Nadu, India
关键词
Composite materials; Annealing; Thermogravimetric analysis; Semiconductivity; ZNO NANOWIRES; TIO2; PHOTODEGRADATION; GROWTH;
D O I
10.1016/j.matchemphys.2010.09.030
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nanorods of ZnO and ZnO/CdO were synthesized by thermal decomposition of their respective acetate without any catalyst at 350 degrees C. It is a simple and low cost method to prepare ZnO and ZnO/CdO nanorods. The decomposition temperature of acetate and the formation of oxides were determined by thermogravimetric analysis before the synthesis process. The prepared samples were characterized by different techniques. The photocatalytic activity of ZnO/CdO was tested by the degradation of methylene blue (MB) in aqueous medium under visible light and the efficiency of the catalyst has been discussed in detail. The method is simple, fast and cost effective when compared to other methods. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:277 / 280
页数:4
相关论文
共 34 条
[1]   Photocatalytic decolorization of remazol red RR in aqueous ZnO suspensions [J].
Akyol, A ;
Yatmaz, HC ;
Bayramoglu, M .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 54 (01) :19-24
[2]   The effect of humidity on thermal process of zinc acetate [J].
Arii, T ;
Kishi, A .
THERMOCHIMICA ACTA, 2003, 400 (1-2) :175-185
[3]   The promoting effect of MgO layer in sensitized photodegradation of colorants on TiO2/MgO composite oxide [J].
Bandara, J ;
Kuruppu, SS ;
Pradeep, UW .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2006, 276 (1-3) :197-202
[4]   Synthesis and characterization of crystalline hexagonal bipods of zinc oxide [J].
Bitenc, Marko ;
Orel, Zorica Crnjak .
MATERIALS RESEARCH BULLETIN, 2009, 44 (02) :381-387
[5]   Preparation, characterization and photocatalytic activity of N-containing ZnO powder [J].
Chen Shifu ;
Zhao Wei ;
Zhang Sujuan ;
Liu Wei .
CHEMICAL ENGINEERING JOURNAL, 2009, 148 (2-3) :263-269
[6]   Photocatalytic degradation of azo dye acid red 14 in water on ZnO as an alternative catalyst to TiO2 [J].
Daneshvar, N ;
Salari, D ;
Khataee, AR .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2004, 162 (2-3) :317-322
[7]   Unusual photoreactivity of zinc oxide irradiated by concentrated sunlight [J].
Dindar, B ;
Içli, S .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 140 (03) :263-268
[8]  
Fujishima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2
[9]   Hydrothermal self-assembling of ZnO nanorods into sphere-like superstructures and their optical characteristics [J].
Gao, Y. J. ;
Zhang, W. C. ;
Wu, X. L. ;
Xia, Y. ;
Huang, G. S. ;
Xu, L. L. ;
Shen, J. C. ;
Siu, G. G. ;
Chu, Paul K. .
APPLIED SURFACE SCIENCE, 2008, 255 (05) :1982-1987
[10]   PHOTOELECTROCHEMISTRY IN SEMICONDUCTOR PARTICULATE SYSTEMS .16. PHOTOPHYSICAL AND PHOTOCHEMICAL ASPECTS OF COUPLED SEMICONDUCTORS - CHARGE-TRANSFER PROCESSES IN COLLOIDAL CDS-TIO2 AND CDS-AGI SYSTEMS [J].
GOPIDAS, KR ;
BOHORQUEZ, M ;
KAMAT, PV .
JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (16) :6435-6440