Journal
NANO LETTERS
Volume 11, Issue 7, Pages 2689-2692Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl200928k
Keywords
Graphene; graphene membranes; silver nanopartides; catalysis; channelling
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Funding
- Danish FTP project
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We have observed a previously undescribed stepwise oxidation of mono- and few layer suspended graphene by silver nanoparticles in situ at subnanometer scale in an environmental transmission electron microscope. Over the range of 600-850 K, we observe crystallographically oriented channelling with rates in the range 0.01-1 nm/s and calculate an activation energy of 0.557 +/- 0.016 eV. We present a discrete statistical model for this process and discuss the implications for accurate nanoscale patterning of nanoscale systems.
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