Metal oxide nanoparticle growth on graphene via chemical activation with atomic oxygen

James E. Johns, Justice M P Alaboson, Sameer Patwardhan, Christopher R. Ryder, George C Schatz, Mark C Hersam

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)18121-18125
Number of pages5
JournalJournal of the American Chemical Society
Volume135
Issue number48
DOIs
Publication statusPublished - Dec 4 2013

Fingerprint

Metal Nanoparticles
Graphite
Oxides
Graphene
Metals
Chemical activation
Oxygen
Nanoparticles
Growth
Zinc
Scanning Probe Microscopy
Zinc Oxide
Scanning probe microscopy
Raman Spectrum Analysis
Atomic layer deposition
Epoxy Compounds
Surface reactions
Zinc oxide
Density functional theory
Raman spectroscopy

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Metal oxide nanoparticle growth on graphene via chemical activation with atomic oxygen. / Johns, James E.; Alaboson, Justice M P; Patwardhan, Sameer; Ryder, Christopher R.; Schatz, George C; Hersam, Mark C.

In: Journal of the American Chemical Society, Vol. 135, No. 48, 04.12.2013, p. 18121-18125.

Research output: Contribution to journalArticle

Johns, James E. ; Alaboson, Justice M P ; Patwardhan, Sameer ; Ryder, Christopher R. ; Schatz, George C ; Hersam, Mark C. / Metal oxide nanoparticle growth on graphene via chemical activation with atomic oxygen. In: Journal of the American Chemical Society. 2013 ; Vol. 135, No. 48. pp. 18121-18125.
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