Journal of Materials Chemistry A p. 8913 - 8919 (2020)
Update date:2022-08-16
Topics:
Hu, Guangzhi
Liu, Xijun
Liu, Yifan
Luo, Jun
Mi, Yuying
Peng, Xianyun
Tang, Xiaolong
Wen, Yanfeng
Zhao, Shunzheng
Zhuo, Longchao
The direct electrochemical conversion of noxious formaldehyde into value-added chemicals is a quite promising technique for resolving the increasingly serious environmental issue arising from industrial formaldehyde-containing wastewater. However, thus far, it has not been examined, to the best of our knowledge. This study reports the electrocatalytic hydrogenation of formaldehyde to methanol in a neutral aqueous medium under ambient conditions over a Pt single-atom catalyst, and this catalyst exhibits a favorable methanol yield rate and a high faradaic efficiency of 30.7 mg h-1 mgcat.-1 and 95.8% at -0.8 V versus the reversible hydrogen electrode in 0.1 M Na2SO4. Also, it exhibits excellent durability. Atomic-scale structural characterization and theoretical calculations revealed that the above-mentioned efficient performance is related to atomically dispersed Pt-O sites, which could lower the free-energy change for the chemisorption of formaldehyde and activate the C-H bond.
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