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Strain-Assisted Wafer-Scale Nanoperforation of Single-Layer Graphene by Arrayed Pt Nanoparticles

Cited 11 time in Web of Science Cited 9 time in Scopus
Authors
Kim, Sung-Soo; Park, Myung Jin; Kim, Jeong-Hee; Ahn, Gwanghyun; Ryu, Sunmin; Hong, Byung Hee; Sohn, Byeong-Hyeok
Issue Date
2015-10
Citation
Chemistry of Materials, Vol.27 No.20, pp.7003-7010
Abstract
We demonstrate the large-area lithography-free ordered perforation of reduced graphene oxide (rGO) and graphene grown by chemical vapor deposition (CVD) with arrayed Pt nanopartides (NPs) prepared by using self-patterning diblock copolymer micelles. The rGO layers were perforated by Pt NPs formed either on top or bottom surface. On the other hand, CVD graphene was perforated only when the Pt NPs were placed under the graphene layer. Various control experiments confirm that the perforation reaction of CVD graphene was catalyzed by Pt NPs, where the mechanical strain as well as the chemical reactivity of Pt lowered the activation energy barriers for the oxidation reaction of C=C bonds in graphene. Systematic atomic force microscopy and Raman analyses revealed the detailed perforation mechanism. The pore size and spacing can be controlled, and thus our present work may open a new direction in the development of ordered nanopattems on graphene using metal NPs.
ISSN
0897-4756
URI
https://hdl.handle.net/10371/172183
DOI
https://doi.org/10.1021/acs.chemmater.5b02328
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College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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