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Citation: CHEN Wei, DONG Xin-Fa, CHEN Zhi-Shan, CHEN Sheng-Zhou, LIN Wei-Ming. Effect of Fe3+ Doping on Photocatalytic Activity of K₂La₂Ti₃O₁₀ for Water Decomposition to Hydrogen under Visible Light[J]. Acta Physico-Chimica Sinica, ;2009, 25(06): 1107-1110. doi: 10.3866/PKU.WHXB20090624 shu

Effect of Fe3+ Doping on Photocatalytic Activity of K₂La₂Ti₃O₁₀ for Water Decomposition to Hydrogen under Visible Light

1.
Guangdong Provincial Laboratory of Green Chemical Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China

Received Date: 20 February 2009
Available Online: 10 April 2009

Undoped K2La2Ti3O10 and Fe3 + doped K2La2Ti3O10 samples were prepared by the sol-gel method and characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectra (DRS) and X-ray photoelectron spectroscopy (XPS). The effects of Fe3+ doping quantity on the properties and photocatalytic activity for hydrogen evolution were investigated. Results showed that Fe-doped K2La2Ti3O10 showed stronger absorption in the 400-650 nm range and this expanded to the visible light (λ>400 nm). Doping with Fe3+ raised the photocatalytic activity for hydrogen generation and the optimumamount of Fe3+ doping was found to be nFe/nTi=0.04. At this ratio and under visible light the rate of hydrogen evolution of Fe-K2La2Ti3O10 was 1.92 μmol·h-1 and this was 4 times higher than that of undoped K2La2Ti3O10 when 120 mL of reactive liquid (CH3OH(30 mL)+H2O(90 mL)) containing 0.1 g photocatalyst was used.
- Photocatalysis,
- Fe3+-doped,
- K2La2Ti3O10,
- Visible light,
- Water decomposition,
- Hydrogen
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沈阳化工大学材料科学与工程学院沈阳 110142

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Effect of Fe3+ Doping on Photocatalytic Activity of K2La2Ti3O10 for Water Decomposition to Hydrogen under Visible Light

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通讯作者: 陈斌, bchen63@163.com

Effect of Fe3+ Doping on Photocatalytic Activity of K₂La₂Ti₃O₁₀ for Water Decomposition to Hydrogen under Visible Light