Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 12, Pages 4983-4994Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c01194
Keywords
CO2 electrochemical reduction; 3D nitrogen-doped graphene aerogel; MnO crystal; heterogeneous catalyst; DFT calculation
Categories
Funding
- National Natural Science Foundation of China [21676245, 51750110495]
- National Key Research and Development Program of China [2018YFC0213806]
Ask authors/readers for more resources
Electrochemical CO2 reduction reaction (CO2RR) is a promising alternative to deal with CO2 and generate green energy. Carbon monoxide (CO) is one key desired product of the CO2RR Herein, a Mn-based heterogeneous catalyst by depositing MnO nanoparticles on three-dimensional N-doped graphene aerogels (NGAs) is synthesized. The catalyst exhibits a negligible onset potential of -0.27 V (vs RHE). This onset potential is 12.5% lower than that of bulk Au electrodes. Moreover, the higher Faradaic efficiency for CO is 86% at a potential of -0.82 V (vs RHE) and better stability over at least 10 h. The excellent CO2RR performance can be attributed to the large specific area of the unique 3D crumpled porous NGA nanostructure, the synergistic effect of well-crystallized MnO active sites, and effective hydrogen evolution reaction suppression from nitrogen doping. The enhancement effect is also revealed by the density functional theory method. Our results highlight a promising new class of low-cost, abundant electrocatalysts for synthetic fuels from CO2.
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