期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 48, 页码 18121-18125出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja408248z
关键词
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资金
- Department of Energy [DE-FG02-09ER16109]
- Office of Naval Research [N00014-11-1-0463]
- W. M. Keck Foundation Science and Engineering Grant
- IIN Postdoctoral Fellowship
- NSF-NSEC
- NSF-MRSEC
- Keck Foundation
- State of Illinois
- Northwestern University
- ANSER center
- Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001059]
Chemically interfacing the inert basal plane of graphene with other materials has limited the development of graphene-based catalysts, composite materials, and devices. Here, we overcome this limitation by chemically activating epitaxial graphene on SiC(0001) using atomic oxygen. Atomic oxygen produces epoxide groups on graphene, which act as reactive nucleation sites for zinc oxide nanoparticle growth using the atomic layer deposition precursor diethyl zinc. In particular, exposure of epoxidized graphene to diethyl zinc abstracts oxygen, creating mobile species,that diffuse on the surface to form metal oxide clusters. This mechanism is corroborated with a combination of scanning probe microscopy, Raman spectroscopy, and density functional theory and can likely be generalized to a wide variety of related surface reactions on graphene.
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