Copyright (c) 2014 AJC
This work is licensed under a Creative Commons Attribution 4.0 International License.
Fabrication and Characterization of ZnO/MWCNTs with Enhanced Photocatalytic Activity
Corresponding Author(s) : Abdullah H. Qusti
Asian Journal of Chemistry,
Vol. 26 No. 16 (2014): Vol 26 Issue 16
Abstract
Composite of multi-walled carbon nanotubes (MWCNTs) and zinc oxide (ZnO) were prepared by the sol-gel method. The photocatalytic function of the MWCNTs/ZnO was validated for cyanide degradation as a model of organic pollutant under irradiation of visible light. The catalysts were characterized by X-ray diffraction, specific surface area measurement, energy dispersive X-ray spectrum analysis, transmission electron microscopy and UV-visible absorption spectra. The results show that the ZnO/ MWCNTs composites (4 % mass ratio of MWCNTs) exhibits much higher photocatalytic activity than other ratios and in addition higher than that of TiO2 (P-25). The promotion is mainly contributed from electron transfer between ZnO and MWCNT.
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W. Wang, P. Serp, P. Kalck and J.L. Faria, Appl. Catal. B, 56, 305 (2005); doi:10.1016/j.apcatb.2004.09.018.
C. Martinez, M. Canle L, M.I. Fernández, J.A. Santaballa and J. Faria, Appl. Catal. B, 102, 563 (2011); doi:10.1016/j.apcatb.2010.12.039.
Y. Sun, S.R. Wilson and D.I. Schuster, J. Am. Chem. Soc., 123, 5348 (2001); doi:10.1021/ja0041730.
K. Chhor, J.F. Bocquet and C. Colbeau-Justin, Mater. Chem. Phys., 86, 123 (2004); doi:10.1016/j.matchemphys.2004.02.023.
M. Olek, T. Busgen, M. Hilgendorff and M. Giersig, J. Phys. Chem. B, 110, 12901 (2006); doi:10.1021/jp061453e.
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A.A. Ismail, I.A. Ibrahim and R.M. Mohamed, Appl. Catal. B, 45, 161 (2003); doi:10.1016/S0926-3373(03)00127-9.
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J.G. Yu, X.J. Zhao and Q.N. Zhao, Thin Solid Films, 379, 7 (2000); doi:10.1016/S0040-6090(00)01542-X.