1. State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China 2. Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030000, China
The photocatalytic reduction of CO2 into formic acid is a feasible approach to alleviate the effects of global climate change and achieve chemical energy storage. It is important to design highly active photocatalysts to improve the selectivity and yield of formic acid. In this study, TiO2-based catalysts were prepared and loaded with Pd nanoparticles via an impregnation process. The Pd/H-TiO2 catalyst demonstrated superior CO2 reduction activity and a high formic acid production rate of 14.14 mmolcat·g–1·h–1. The excellent catalytic performance observed in the presence of a Pd/H-TiO2 catalyst is ascribed to the synergy between Ov and Pd. The presence of Ov led to increase in CO2 adsorption while Pd loading enhanced the photogenerated electron-hole pair separation. Electron transfer from H-TiO2 to Pd also contributed to CO2 activation.
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D Saito , Y Tamaki , O Ishitani . Photocatalysis of CO2 reduction by a Ru(II)-Ru(II) supramolecular catalyst adsorbed on Al2O3. ACS Catalysis, 2023, 13(7): 4376–4383 https://doi.org/10.1021/acscatal.2c06247
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H Q Pan , M D Heagy . Photons to formate: a review on photocatalytic reduction of CO2 to formic acid. Nanomaterials, 2020, 10(12): 2422 https://doi.org/10.3390/nano10122422
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