Graphene-loaded tin oxide nanofibers: optimization and sensing performance
- Authors
- Abideen, Zain Ul; Park, Jae Young; Kim, Hyoun Woo; Kim, Sang Sub
- Issue Date
- Jan-2017
- Publisher
- IOP PUBLISHING LTD
- Keywords
- SnO2; graphene; H2S; gas sensor
- Citation
- NANOTECHNOLOGY, v.28, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOTECHNOLOGY
- Volume
- 28
- Number
- 3
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21255
- DOI
- 10.1088/1361-6528/28/3/035501
- ISSN
- 0957-4484
- Abstract
- We investigated the gas sensing characteristics of graphene nanosheet (NS)-loaded SnO₂ nanofibers (NFs) that were synthesized by a low-cost facile electrospinning process. The sensing performance was characterized as a function of the graphene content with various gases such as C₆H₆, C₇H₈, CO, CO₂, and H₂S. The loading of graphene NSs significantly improved the gas sensing performances of SnO₂ NFs. The optimal amount of graphene NSs was found to be 0.5 wt%. We proposed a sensing mechanism for the enhanced sensing performance based on the chemical sensitization of graphene NSs and the charge transfer through the heterointerfaces between graphene NSs and SnO₂ nanograins. The results show that graphene NS-loaded SnO₂ NFs are a promising sensing material system that can detect hazardous gaseous species.
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