Preparation of polyaniline-modified TiO2 nanoparticles and their photocatalytic activity under visible light illumination

Titanium dioxide nanoparticles were modified by polyaniline using ‘in situ’ chemical oxidative polymerization method in hydrochloric acid solutions

Xueyan Li; Desong Wang; Guoxiang Cheng; Qingzhi Luo; Jing An; Yanhong Wang

2008

Scholarcy highlights

  • Titanium dioxide nanoparticles were modified by polyaniline using ‘in situ’ chemical oxidative polymerization method in hydrochloric acid solutions
  • Powder X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectra, X-ray photoelectron spectroscopy spectrum and UV–vis spectra were carried out to characterize the composites with different PANI contents
  • The photocatalytic degradation of phenol was chosen as a model reaction to evaluate the photocatalytic activities of the modified catalysts
  • Results show that TiO2 nanoparticles are deposited by PANI to mitigate TiO2 particles agglomeration
  • The modification does not alter the crystalline structure of the TiO2 nanoparticles according to the X-ray diffraction patterns
  • An optimum of the synergetic effect is found for an initial molar ratio of aniline to TiO2 equal to 1/100

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