Citation:
Shuai Shen, Xiuli Wang, Qian Ding, Shaoqing Jin, Zhaochi Feng, Can Li. Effect of Pt cocatalyst in Pt/TiO2 studied by in situ FTIR of CO adsorption[J]. Chinese Journal of Catalysis,
;2014, 35(11): 1990-1906.
doi:
10.1016/S1872-2067(14)60172-8
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In situ transmission infrared spectroscopy was used to study the role of Pt cocatalyst in Pt/TiO2 using CO as a probe molecule. An 11 cm-1 redshift of CO adsorbed on Pt/TiO2 was observed under irradiation in the absence of changes in the CO coverage or sample temperature. In contrast, no CO shift was detected on Pt/Al2O3. This indicates that the redshift of the CO adsorption peak is due to the photogenerated electron transfer from TiO2 to Pt, and this accounts for the increased photocatalytic activity by the loaded Pt cocatalyst.
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Keywords:
- Carbon monoxide adsorption,
- Platinum,
- Titania,
- Cocatalyst,
- Photocatalysis
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