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- Title
Camphorsulfonic acid-doped polyaniline/TiO nanotube hybrids: synthesis strategy and enhanced visible photocatalytic activity.
- Authors
Li, Huirong; Zhou, Jie; Lu, Xiong; Wang, Jianxin; Qu, Shuxin; Weng, Jie; Feng, Bo
- Abstract
Camphorsulfonic acid doped polyaniline (CSA-PANI) was prepared by a doping-dedoping-redoping process, and subsequently used for modifying the TiO nanotube arrays (TNTs) on titanium surfaces via a facile impregnation method. The obtained CSA-PANI/TNTs hybrids were characterized by field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, UV-Vis diffuse reflectance spectroscopy and photocurrent tests. The photocatalytic activities of the hybrids were measured by the degradation of Rhodamine B (RhB) under visible-light irradiation (λ > 420 nm). The results indicate the hybridization between CSA-PANI and TiO greatly enhances the photocatalytic activity of TNTs. The CSA-PANI (100 mg/L) hybridized TNTs photocatalyst displays the highest photocatalytic activity for RhB decomposition. Conductive CSA-PANI polymer can arouse visible light absorption and accelerate the separation of photo-induced electron-hole pairs. A possible mechanism on the CSA-PANI/TNTs photocatalytic activities is suggested. Such a photocatalyst should be promising for photocatalytic degradation of organic pollutants using solar energy.
- Subjects
SULFONIC acids; POLYANILINES; TITANIUM oxides; NANOTUBES; NANOSTRUCTURED materials synthesis; PHOTOCATALYSIS
- Publication
Journal of Materials Science: Materials in Electronics, 2015, Vol 26, Issue 10, p7723
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-015-3416-2