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- Title
Confining Gold Nanoclusters in Highly Defective Graphitic Layers To Enhance the Methanol Electrooxidation Reaction.
- Authors
Mao, Zhe; Hu, Haihua; Su, Rui; Liu, Peizhi; Li, Yixing; Zhang, Wenting; Zhao, Xiaoning; Guo, Junjie; Guan, Pengfei; Qin, Gaowu; Zhang, Xuefeng
- Abstract
Abstract: The development of a highly efficient catalyst possessing both high activity and remarkable stability is a major focus in fuel‐cell applications. Herein, we utilized an arc‐discharge approach with an ultrafast cooling system to synthesize a core@shell structural Au@C nanocomposite comprising 3–5 nm gold clusters confined within highly defective graphitic layers. Such a construction not only improves the conductivity to accelerate the penetration of ions and electrons during the electrocatalytic process of methanol molecules, but it also suppresses chemical/thermal coarsening of the gold clusters. More importantly, the atomic‐scale Au/C interfaces contribute to a synergistic effect and enhance the activity relative to that of other gold‐based catalysts in the electrooxidation of methanol. This work highlights the role of heterogeneous interfaces in the catalytic efficiency of precious‐metal catalysts and rationalizes optimization in catalyst engineering.
- Subjects
METHANOL; COOLING systems; ENGINEERING systems; OSTWALD ripening; CRYSTAL growth
- Publication
ChemCatChem, 2018, Vol 10, Issue 1, p141
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201700895