Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 8, Issue 25, Pages 12291-12295Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ta04551a
Keywords
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Funding
- National Natural Science Foundation of China [51572062]
- China Scholarship Council [201906120349]
- National Science Foundation [1900039]
- Welch Foundation [F-1959-20180324]
- DOE's Office of EERE
- DOE Office of Science [DE-AC02-06CH11357]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1900039] Funding Source: National Science Foundation
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CO(2)electroreduction is developing as a promising technology to solve environmental and energy problems. Alloy catalysts with dissimilar local metal atoms induce geometric and electronic effects that may greatly contribute to their performance. However, the fundamental mechanisms for CO(2)reduction on a bimetallic Au alloy surface are still ambiguous. Here, we report effective CO(2)reduction by the synergies between electronic and geometric effects of Mo-doped Au nanoparticles (MDA NPs). A 97.5% CO faradaic efficiency and 75-fold higher current density than pure Au nanoparticles were achieved at -0.4 Vversusthe reversible hydrogen electrode for MDA NPs with at least 50 h lifetime. Our experimental and theoretical calculation results reveal that the Au surface with increased electron density from Mo can effectively enhance CO(2)activation. Moreover, the intermediate *COOH may be further stabilized by the local Mo atom through additional Mo-O binding to decrease the energy barrier.
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