NDLI: Photoinduced charge separation and simulated solar-driven photocatalytic performance of C–N-co-doped TiO$

Content Provider	Springer Nature Link
Author	Chen, Jiufu Zhong, Junbo Li, Jianzhang Zeng, Jun Huang, Shengtian Dou, Lin
Copyright Year	2015
Abstract	C–N-co-doped anatase TiO$_{2}$ photocatalysts were successfully prepared by a sol–gel method and characterized by Brunauer–Emmett–Teller method, X-ray diffraction, UV–Vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscope (SEM), and surface photovoltage spectroscopy (SPS). The separation efficiency of photogenerated charges was investigated using benzoquinone as scavenger. An obvious redshift of the absorption edge of TiO$_{2}$ was observed owing to C and N doping. Moreover, doping C and N into TiO$_{2}$ increases the content of hydroxyl content on the surface of photocatalysts and photoinduced charge separation efficiency. The photocatalytic activity was evaluated by decolorization of methyl orange (MO) aqueous solution under simulated sun light and visible light irradiation. The results show that photocatalytic activities of the TiO$_{2}$ are greatly improved by C and N co-doping, which can be further confirmed by the removal of COD of MO aqueous solution.In general, the strong SPS response corresponds to the high separation rate of photoinduced charge carriers on the basis of the SPS principle. Thus, it can be confirmed that the C–, N-TiO$_{2}$ sample has a higher charge separation rate than the pure TiO$_{2}$ sample, and the 4 % C–, N-TiO$_{2}$ shows the highest charge separation rate
Starting Page	332
Ending Page	340
Page Count	9
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	76
Issue Number	2
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2015-07-03
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	TiO$_{2}$ Doping Photocatalytic activity Charge separation Ceramics, Glass, Composites, Natural Methods Inorganic Chemistry Optical and Electronic Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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