期刊
NANOMATERIALS
卷 12, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/nano12030332
关键词
photothermal reactor; CO2 reduction; photocatalytic H2O oxidation; DRIFT; alloy
类别
资金
- Taiwan Ministry of Science and Technology [110-2221-E-027-006-MY2]
Selective hydrogenation of CO2 to ethanol is achieved efficiently using Pd2Cu dispersed TiO2 (P25) photocatalyst through photothermal catalysis.
The photocatalytic conversion of CO2 to fuels using solar energy presents meaningful potential in the mitigation of global warming, solar energy conversion, and fuel production. Photothermal catalysis is one promising approach to convert chemically inert CO2 into value-added chemicals. Herein, we report the selective hydrogenation of CO2 to ethanol by Pd2Cu alloy dispersed TiO2 (P25) photocatalyst. Under UV-Vis irradiation, the Pd2Cu/P25 showed an efficient CO2 reduction photothermally at 150 degrees C with an ethanol production rate of 4.1 mmol g(-1) h(-1). Operando diffuse reflectance infrared Fourier transform (DRIFT) absorption studies were used to trace the reactive intermediates involved in CO2 hydrogenation in detail. Overall, the Cu provides the active sites for CO2 adsorption and Pd involves the oxidation of H-2 molecule generated from P25 and C-C bond formation.
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