Abstract :
Polyaniline/nano-TiO2 composite was prepared by polyaniline for the surface modification of nano-TiO2 particles, and was
characterized via Fourier-transform infrared spectra, UV-Vis-NIR spectrophotometer, wide-angle X-ray diffraction, thermogravimetric
analysis and transmission electron microscope, as well as conductivity. Surface area, total pore volume and pore size
distribution of nano-TiO2 particles and polyaniline/nano-TiO2 composite particles were also measured. The results of
spectroanalysis illustrate that polyaniline and nano-TiO2 particles are not simply blended or mixed up. There is a strong
interaction between polyaniline macromolecule and nano-TiO2 particles. Synthesized polyaniline was deposited on the surface
of nano-TiO2 particles, forming a core-shell structure. The dimension of polyaniline/nano-TiO2 composite particles is in the
range 25–40 nm. Polyaniline/nano-TiO2 composite contains 38% conducting polyaniline by mass, for which conductivity
reaches 0.75 S cm 1 at 25 8C.
# 2004 Elsevier B.V. All rights reserved
Keywords :
Nano-TiO2 , Composite , Polyaniline , Interface
