NO2 gas sensing based on graphene synthesized via chemical reduction process of exfoliated graphene dxide
- Title
- NO2 gas sensing based on graphene synthesized via chemical reduction process of exfoliated graphene dxide
- Author
- 심광보
- Keywords
- Graphene; Graphene oxide; Gas sensing
- Issue Date
- 2012-04
- Publisher
- 한국결정성장학회
- Citation
- 한국결정성장학회지, 2012, 22(2), P.84-91
- Abstract
- Single and few-layer graphene nanosheets (GNs) have successfully synthesized by a modified Hummer's method followed by chemical reduction of exfoliated graphene oxide (GO) in the presence of hydrazine monohydrate. GO and GNs were characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), X-ray diffractions (XRD), Raman spectroscopy, Transmission electron microscopy (TEM), Atomic force microscopy (AFM), Optical microscopy (OM) and by electrical conductivity measurements. The result showed that electrical conductivity of GNs was significantly improved, from $4.2{\times}10^{-4}$ S/m for GO to 12 S/m for GNs, possibly due to the removal of oxygen-containing functional group during chemical reduction. In addition, the $NO_2$ gas sensing characteristics of GNs are also discussed.
- URI
- http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=GJSJBE_2012_v22n2_84http://hdl.handle.net/20.500.11754/48165
- ISSN
- 1225-1429
- DOI
- 10.6111/JKCGCT.2012.22.2.084
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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