Electrostatic self-assembly preparation and anti-UV properties of MWNT /CeO_2 composites

Agglomeration of nanoparticles in fabric needed to be solved. MWNT /CeO2 was prepared by electrostatic self-assembly method. The negatively charged carboxylated carbon nanotube dispersion system was prepared by mixed acid oxidation,and electrostatic self-assembled with positively charged Ce3 +. Then NaOH was used as precipitant and the MWNT /CeO2 was prepared by calcination. Besides,fabric coating methods were applied to cotton fabric by changing different mass ratios of carbon nanotubes to CeO2,and its anti-UV resistance was studied. The composites were characterized by transmission electron microscopy( TEM) and X-ray diffraction( XRD). It was proved that several layers of spherical CeO2 nanoparticles were deposited on the external surface with high density and the size distribution ranging at 4- 6 nm by TEM. The results showed that the UV-absorption property of the MWNT /CeO2was30% higher than nano cerium oxide when the mass ratio of CNT /CeO2 was 1∶ 25.