| ZHAO Er-ling,GAO Li-guo,MA Ting-li.Progress of TiO2 Photocatalysis Enhanced under Visible Light Irradiation[J],46(4):38-45 |
| Progress of TiO2 Photocatalysis Enhanced under Visible Light Irradiation |
| Received:December 01, 2016 Revised:April 20, 2017 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2017.04.008 |
| KeyWord:TiO2 thin film semiconductors photocatalytic mechanism surface modification visible light |
| Author | Institution |
| ZHAO Er-ling |
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian , China |
| GAO Li-guo |
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian , China |
| MA Ting-li |
1.State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian , China;2.Kyushu Institute of Technology Graduate School of Life Science and Systems Engineering, Kitakyushu 808-0196, Japan |
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| Abstract: |
| With the development of industrialized society, environmental pollution has become increasingly serious. Pollution control and management has been the major scientific issue urgently need to be addressed. Among various pollution management methods, semiconductor photocatalytic material, as an ideal cleaning material for pollution control and management due to its unique properties, is mainly used to degrade toxic substances, photocatalytic water splitting and photoelectric conversion, etc. Titanium dioxide (TiO2), as a common wide-band gap semiconductor, is considered as one of the most vital photocatalysts because of its highly photoactivity, chemical stability, non-toxicity, low cost, etc. However, the application of TiO2 is directly restricted by such key scientific and technological problems as low light utilization efficiency and wide band gap (3.2 eV) of TiO2. Approaches and methods of realizing TiO2 visible light catalysis recently were summarized from chemical and physical perspectives. Chemical and physical methods including slow light effects, Mie scattering effect and surface plasma resonance were reviewed. In addition, the work has given prospect regarding deepening photocatalytic mechanism of existing TiO2 visible light system, exploring effective volume phase dopant and surface sensitizer, designing and controlling existing forms of dopant and surface sensitizer, and further improving TiO2 photocatalytic efficiency. |
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