Citation: HAO Rui-peng, YANG Peng-ju, WANG Zhi-jian, ZHU Zhen-ping. Effect of noble metals loaded TiO₂ on the selectivity of photocatalytic CO₂ reduction[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(1): 94-99. shu

Effect of noble metals loaded TiO₂ on the selectivity of photocatalytic CO₂ reduction

1.
1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

Corresponding author: WANG Zhi-jian, ZHU Zhen-ping,
Received Date: 25 September 2014
Available Online: 22 October 2014
Fund Project: 国家自然科学基金(21173250). (21173250)

The TiO₂ photocatalyst loaded with 1% Pt, Pd, Au, Ag have been prepared by photo deposition method. The catalysts are characterized with X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV-vis spectrometer. The electro-catalytic performance for hydrogen production and photo electrochemical performance are investigated by using linear sweep voltammetry method and continuous transient current-time response method. The performance of photocatalytic CO₂ reduction on TiO₂ loaded with different noble metals are discussed. The results show that loading noble metal on TiO₂ can significantly accelerate the separation of photo production electron and hole and reduce the recombination rate. Furthermore, the sequence of cocatalysts selective reduction for CO₂ is Ag>Au>Pd>Pt. A negative correlation between the selectivity of CO₂ hydrogenation and hydrogen production has been discovered. The cocatalyst which has advantage to hydrogen evolution process goes against the selectivity of CO₂ hydrogenation.
- cocatalyst,
- TiO₂,
- photocatalysis,
- CO₂ reduction
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Effect of noble metals loaded TiO2 on the selectivity of photocatalytic CO2 reduction

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通讯作者: 陈斌, bchen63@163.com

Effect of noble metals loaded TiO₂ on the selectivity of photocatalytic CO₂ reduction