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Preparation of polyaniline/TiO2 composite nanotubes for photodegradation of AZO dyes

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Abstract

Polyaniline (PANI) composite nanotubes (90–130 nm in diameter) containing titanium dioxide (TiO2) nanoparticles (about 10 nm in diameter) were synthesized through a self-assembly process in the presence of â-naphthalenesulfonic acid (â-NSA) as the dopant. It was found that PANI-TiO2 composites and PANI nanotubes both behaved with significant photocatalytic activities towards AZO dyes, during 2 h photocatalytic processes under natural light, the degradation ratio was 94.2% and 97.2% respectively (methyl orange and orange II). The morphology of such products was characterized by SEM. The specific surface area of such composite nanotubes was 14.7 m2/g compared to normal polyaniline which was 0.27 m2/g. IR and X-ray diffraction characterizations showed that the chemical chain of the composite nanotubes was identical to that of the doped PANI. It may provide a new way for photodegradation of organic contaminants by using conjugated polymer with dimensional structure.

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Authors and Affiliations

  1. College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan, 430081, China

    Yang Cheng  (程杨), Liang An & Guanghui Wang

  2. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education of the People’s Republic of China, Ocean University of China, Qingdao, 266100, China

    Zongshan Zhao

Authors
  1. Yang Cheng  (程杨)
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  2. Liang An
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  3. Zongshan Zhao
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  4. Guanghui Wang
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Corresponding author

Correspondence to Yang Cheng  (程杨).

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Funded in Part by the Research Fund of Hubei Provincial Department of Education, China (No. Q20121102)

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Cheng, Y., An, L., Zhao, Z. et al. Preparation of polyaniline/TiO2 composite nanotubes for photodegradation of AZO dyes. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 29, 468–472 (2014). https://doi.org/10.1007/s11595-014-0941-4

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  • DOI: https://doi.org/10.1007/s11595-014-0941-4

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