Dual-atom Ag2/graphene catalyst for efficient electroreduction of CO2 to CO
Journal Article
·
· Applied Catalysis B: Environmental
- Univ. of Chinese Academy of Sciences, Beijing (China)
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
Electrochemical reduction of CO2 into value-added carbon compounds offers a promising strategy to mitigate global warming, but present challenges for chemistry due to the poor selectivity and stability of electrocatalysts. In this work, we report a dual-atom Ag2/graphene catalyst featuring well-defined AgN3-AgN3 active site for CO2 electrochemical reduction. This dual-atom catalyst can drive CO2 reduction reaction at a potential as high as -0.25 V, and exhibit excellent CO Faradic efficiency up to 93.4 % with a current density of 11.87 mA cm-2 at -0.7 V and long-term stability, far surpassing the single-atom Ag1/graphene and the traditional silver nanoparticle catalysts. Finally, DFT calculations reveal that the dual-atom Ag site lowers the barrier for the formation of *COOH by stabilizing the *CO2 through the concomitant interactions with the C and an O atom of CO2, resulting in excellent catalytic performance.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NNSFC); USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1616714
- Journal Information:
- Applied Catalysis B: Environmental, Journal Name: Applied Catalysis B: Environmental Journal Issue: C Vol. 268; ISSN 0926-3373
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electrochemical CO2 Reduction with Atomic Iron-Dispersed on Nitrogen-Doped Graphene
Effect of Chloride Anions on the Synthesis and Enhanced Catalytic Activity of Silver Nanocoral Electrodes for CO 2 Electroreduction
Journal Article
·
Sat Mar 24 20:00:00 EDT 2018
· Advanced Energy Materials
·
OSTI ID:1433979
Effect of Chloride Anions on the Synthesis and Enhanced Catalytic Activity of Silver Nanocoral Electrodes for CO 2 Electroreduction
Journal Article
·
Fri Sep 04 00:00:00 EDT 2015
· ACS Catalysis
·
OSTI ID:1354341