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Citation: CHENG Xiuwen, YU Xiujuan. Synthesis and Characterization of C-N-S-tertiary Doped TiO₂ Photocatalyst and Its Photocatalytic Activity[J]. Chinese Journal of Applied Chemistry, ;2012, 29(3): 291-296. doi: 10.3724/SP.J.1095.2012.00206 shu

Synthesis and Characterization of C-N-S-tertiary Doped TiO₂ Photocatalyst and Its Photocatalytic Activity

CHENG Xiuwen ^a,b ,
YU Xiujuan ^a,b,,

1.
a Department of Environmental Science and Engineering, Heilongjiang University, Harbin 150080, China;
2.
b Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion, College of Heilongjiang Province, Harbin 150080, China

Corresponding author: YU Xiujuan,
Received Date: 13 May 2011
Available Online: 24 June 2011
Fund Project:

A visible-light responsible non-metal C-N-S-tertiary doped TiO₂ was synthesized by a sol-gel process using Ti(OC₄H₉)₄ and functional biology organic cystine as raw materials.The obtained photocatalysts were characterized by the means of X-ray powder diffraction(XRD),X-ray photoelectron spectroscopy(XPS),fourier transition infrared spectra(FT-IR),ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS).XRD showed that,by C,N and S tertiary-doping,the growth of TiO₂ crystallite was restrained and the temperature of phase transformation from anatase to rutile of TiO₂ was enhanced effectively.DRS showed the extension of light absorption edge in the range of visible-light was up to 800 nm.XPS analysis revealed that C and S existing on the surface of TiO₂ photocatalyst was the state of CO₃^2- and S⁶⁺,respectively.Nitrogen species could be ascribed to the form of N-Ti-O and Ti-O-N.And more hydroxyl groups were found on the C-N-S tertiary doped catalyst.The photocatalytic activities of the as-prepared photocatalysts were evaluated by degradation of Rhodamine B(RhB) in an aqueous suspension under visible light.It was found that C-N-S- tertiary doped TiO₂ exhibited improved photocatalytic activity compared with that of P25 TiO₂.Under the visible-light irradiation ranging from 470 to 800 nm for 2 h,an 83% removal rate of RhB could be achieved.
- titanium dioxide,
- non-metal tertiary doped,
- visible-light,
- photocatalysis,
- Rhodamine B
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Synthesis and Characterization of C-N-S-tertiary Doped TiO2 Photocatalyst and Its Photocatalytic Activity

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Synthesis and Characterization of C-N-S-tertiary Doped TiO₂ Photocatalyst and Its Photocatalytic Activity