Preparation and photocatalytic activity of multi-walled carbon nanotubes/Mg-doped ZnO nanohybrids

Chen, C. S.; Xie, X. D.; Cao, S. Y.; Liu, T. G.; Lin, L. W.; Chen, X. H.; Liu, Q. C.; Kuang, J. C.; Xiao, Y.

doi:10.1515/msp-2015-0083

Abstract

Multi-walled carbon nanotubes/Mg-doped ZnO (MWNTs/Zn_1-xMg_xO) nanohybrids were prepared by co-precipitation method, and their photocatalytic activity for methyl orange (MO) was studied. Experimental results showed that Mg-doped ZnO nanoparticles were successfully deposited on the surface of MWNTs under annealing at 450 °C and 550 °C. The resultant MWNTs/Zn_0.9Mg_0.1O nanohybrids had better photocatalytic activity for degradation of methyl orange than pure ZnO: the rates of MO photodegradation were 100 % and 30 % for 1 h, respectively. The enhancement in the photocatalytic activity was attributed to the excellent electronic properties of MWNTs and Mg-doping.

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Preparation and photocatalytic activity of multi-walled carbon nanotubes/Mg-doped ZnO nanohybrids

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