期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 13, 期 12, 页码 6813-6820出版社
SPRINGER
DOI: 10.1007/s11051-011-0589-3
关键词
TiO2 nanotube arrays; Polyaniline; Electrodeposition; Rhodamine B; Photoelectrocatalysis
资金
- National Nature Science Foundation of China [20877013, NSFC-RGC 21061160495]
- National High Technology Research and Development Program of China (863 Program) [2010AA064902]
- Major State Basic Research Development Program of China (973 Program) [2011CB936002]
- Liaoning Provincial University [LR2010090]
- Key Laboratory of Industrial Ecology and Environmental Engineering, China Ministry of Education
Self-organized anodic TiO2 nanotube arrays were sensitized with polyaniline by a simple electrodeposite method. The morphological and structural properties studied by scanning electron microscopy and fourier transform infrared spectroscopy reveal the successful deposition of polyaniline on the nanotube arrays. The polyaniline-sensitized TiO2 nanotube arrays exhibit a distinguishable red shift on the absorption spectrum. Electrochemical impedance investigation attested to a significant improvement of the interfacial electron-transfer kinetics for promoted electron-hole effective separation. The as-prepared samples showed a high efficiency for the photoelectrocatalytic degradation of rhodamine B under visible-light irradiation (lambda > 400 nm). The enhanced photoelectrocatalytic activity could be attributed to the extended absorption in the visible-light region by the polyaniline and the effective separation of photogenerated carriers driven by the photoinduced potential difference generated at the polyaniline/TiO2 nanotube arrays interface.
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