Bulletin of Materials Science

, 41:146 | Cite as

Interface engineering of \(\hbox {TiO}_{2}\)@PANI nanostructures for efficient visible-light activation

  • Lin Chen
  • Sudong YangEmail author


Core–shell-structured \(\hbox {TiO}_{2}\)@PANI composites were fabricated using negatively charged titanium glycolate (TG) precursor spheres, which were decorated using hydrochloric acid; subsequently, the uniform polyaniline (PANI) layer could be attached onto the surface of the polystyrene spheres by in situ chemical oxidative polymerization and finally, the resulting PANI-grafted TG were allowed to hydrolyse by treating the material with hot water. The TGs were transformed to porous \(\hbox {TiO}_{2}\), leading to the formation of core–shell \(\hbox {TiO}_{2}\)@PANI composites. The resulting \(\hbox {TiO}_{2}\)@PANI composite photocatalysts were characterized by X-ray diffraction, scanning electron microscopy, ultraviolet–visible diffuse reflection spectroscopy and photoluminescence spectroscopy. Significantly, the \(\hbox {TiO}_{2}\)@PANI composite photocatalysts exhibited dramatically enhanced photo-induced electron–hole separation efficiency, which was confirmed by the results of photocurrent measurements. PANI was dispersed uniformly over the porous \(\hbox {TiO}_{2}\) surface with an intimate electronic contact on the interface to act cooperatively to achieve enhanced photocatalytic properties, indicating that core–shell \(\hbox {TiO}_{2}\)@PANI composite photocatalysts could be promising candidate catalysts under visible-light irradiation. The mechanism of enhancing photocatalytic activity was proposed on the basis of the experimental results and estimated energy band positions.


Photocatalysis \(\hbox {TiO}_{2}\)-based materials heterojunction efficient charge separation 



This project was supported by the Natural Science Foundation for Young Scholars Program of Xinjiang Uygur Autonomous Region (2016D01B050).


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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  1. 1.Xinjiang Uyghur Autonomous Region Product Quality Supervision and Inspection InstituteUrumqiPeople’s Republic of China
  2. 2.Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and ChemistryChinese Academy of SciencesUrumqiPeople’s Republic of China

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