Cite the paper
P. Logamani, G. Poongodi, R. Rajeswari (2017). Synthesis, Structural, Optical and Photocatalytic Studies of Nanostructured Cadmium Doped ZnO Nanorods by Hydrothermal Method. Mechanics, Materials Science & Engineering, Vol 10. doi:10.2412/mmse.37.62.535
Authors: P. Logamani, G. Poongodi, R. Rajeswari
ABSTRACT. Nowadays, considerable attention has been paid to the eradication of hazardous substances in the environment especially in the wastewater. The photocatalytic reaction is used to mineralize the hazardous recalcitrant pollutants in to simple and harmless compounds and has been enhanced by the application of nanoparticles. Zinc oxide (ZnO) is a nontoxic wide band gap semiconductor photocatalyst, having unique properties such as high mobility, excellent chemical and thermal stability, high transparency and biocompatibility. To enhance its photocatalytic activity in the visible region ZnO can be doped with metals and non-metals. In the present work, pure and cadmium doped ZnO nanorods were prepared by hydrothermal method and characterized by X-ray diffraction, field-emission scanning electron microscopy with EDAX and UV–Vis spectroscopy. The XRD results showed that the grown nanorods were well crystalline with hexagonal wurtzite structure. FESEM images confirm the nanorod structure. UV-Vis transmission spectra show that the substitution of Cd in ZnO leads to band gap reduction. The Cd doped ZnO nanorods were found to exhibit improved photocatalytic activity for the degradation of methylene blue dye under visible light in comparison with the undoped ZnO.
Keywords: cadmium doped ZnO, nanorods, hydrothermal method, FESEM
References A. Fujishima, K. Honda, Electrochemical photolysis of water at a semiconductor electrode, Nature Vol. 238 (5358), (1972) 37-38.
 Y. Liu, J. Han, W. Qiu, W. Gao, Hydrogen peroxide generation and photocatalytic degradation of estrone by microstructural controlled ZnO nanorod arrays, Appl. Surf. Sci. 263 (2012) 389-396, DOI
 I. Udo, M.K. Ram, E.K. Stefanakos, A.F. Hepp, D. Yogi Goswami, Mater. Sci. Semicond. Process 16 (2013) 2070-2083.
 W. Xie, Y. Li, W. Sun, J. Huang, H. Xie, X. Zhao, Surface modification of ZnO with Ag improves its photocatalytic efficiency and photostability, J. Photochem. Photobiol. A, 216 (2010) 149-155, DOI 10.1016/j.jphotochem.2010.06.032
 R. He, R.K. Hocking, T. Tsuzuki, Co-Doped ZnO Nanopowders: Location of Cobalt and Reduction in Photocatalytic Activity, J. Mater. Sci. 47 (2012) 3150-3158, DOI 10.1016/j.matchemphys.2011.12.061
 V. Etacheri, R. Roshan, V. Kumar, Mg-doped ZnO nanoparticles for efficient sunlight-driven photocatalysis, ACS Appl. Mater. Interfaces 4 (2012) 2717-2725, DOI 10.1021/am300359h
 S. Mondal and P. Mitra, Preparation of cadmium-doped ZnO thin films by SILAR and their characterization, Bull. Mater. Sci. 35 (5), (2012), 751-757, DOI 10.1007/s12034-012-0350-2
 K. Thongsuriwong, P. Amornpitoksuk, S. Suwanboon, Corrigendum to “Structure, morphology, photocatalytic and antibacterial activities of ZnO thin films prepared by sol–gel dip-coating method”, Adv. Powder Technol. 24(1) (2013) 275–280, DOI 10.1016/j.apt.2015.05.001
 S. Kumar, R. Kumar, D.P. Singh, Swift heavy ion induced modifications in cobalt doped ZnO thin films: Structural and optical studies, Appl. Surf. Sci. Vol. 255 (2009) 8014-8018, DOI 10.1016/j.apsusc.2009.05.005
 C. Xu, L. Cao, G. Su, W. Liu, X. Qu, Y. Yu, Preparation, characterization and photocatalytic activity of Co-doped ZnO powders, J. Alloys Compd. 497 (2010) 373-376, DOI 10.1016/j.jallcom.2010.03.076
Mechanics, Materials Science & Engineering Journal by Magnolithe GmbH is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at www.mmse.xyz.