Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 266, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2020.118618
Keywords
AuCu alloy NPs; C-C coupling; Photothermal catalysis; CO2 reduction; Ethanol
Funding
- National Natural Science Foundation of China [51672081]
- Key Program of Natural Science of Hebei Province [B2016209375]
- support program for one hundred excellent talents of innovation in Hebei provincial universities (III) [SLRC2017049]
Ask authors/readers for more resources
Here, we report ultrathin porous g-C3N4 nanosheets modified with AuCu alloy NPs for photothermalcatalytic CO2 reduction to ethanol. The positive charge on the Au surface improves the adsorption of CO2 molecules and the charge transfer from Au to Cu in the alloy enriches Cu with excessive negative charges, promoting the formation of intermediates CO2 center dot- and *CO on the surface of Cu. The strong interaction between the metal and g-C3N4 accelerates the migration of photogenerated charges. The increase of temperature leads to the enhancement of the thermal motion of the molecules, resulting in the synergy of photocatalysis and thermal catalysis, which promotes the formation of C-C coupling by *CO polymerization, so that the yield of CH3CH2OH was increased. At 120 degrees C, the yield and selectivity of ethanol are 0.89 mmol.g(-1).h(-1) and 93.1% for 1.0 wt% AuCu/g-C3N4, which are 4.2 times that of photocatalysis and 7.6 times that of thermal catalysis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available