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

• Main Authors: 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.
• Format: Article
• Language: English
• Published: Sciendo 2015-09-01
• Series: Materials Science-Poland
• Subjects: carbon nanotube; mg-doped zno; nanohybrids; photocatalytic activity
• Online Access: https://doi.org/10.1515/msp-2015-0083
• ISSN: 2083-134X

Multi-walled carbon nanotubes/Mg-doped ZnO (MWNTs/Zn1-xMgxO) 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/Zn0.9Mg0.1O 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.