Fabrication of Pt-MWNT/Nafion Electrodes by Low-Temperature Decal Transfer Technique for Amperometric Hydrogen Detection
- Title
- Fabrication of Pt-MWNT/Nafion Electrodes by Low-Temperature Decal Transfer Technique for Amperometric Hydrogen Detection
- Author
- 김용신
- Keywords
- Hydrogen sensor; Electrochemical gas sensor; Pt-MWNT electrode; Hot-pressing
- Issue Date
- 2014-02
- Publisher
- 한국전기화학회
- Citation
- 전기화학회지, v. 17, NO. 1, Page. 18-25
- Abstract
- A Pt nanoparticle-decorated multiwall carbon nanotube (Pt-MWNT) electrode wasprepared on Nafion by a hot-pressing at relatively low temperature. This electrode exhibitedan intricate entangled, nanoporous structure as a result of gathering highly anisotropic Pt-MWNTs. Individual Pt nanoparticles were confirmed to have a polycrystalline face-centeredcubic structure with an average crystal size of around 3.5 nm. From the cyclic voltammogramsfor hydrogen redox reactions, the Pt-MWNT electrode was found to have a similar electrochemicalbehavior to polycrystalline Pt, and a specific electrochemical surface area of2170 cm2mg−1. Upon exposure to hydrogen analyte, the Pt-MWNT/Nafion electrode demonstrateda very high sensitivity of 3.60 μA ppm−1 and an excellent linear response over the concentrationrange of 100-1000 ppm. Moreover, this electrode was also evaluated in terms ofresponse and recovery times, reproducibility, and long-term stability. Obtained results revealedgood sensing performance in hydrogen detection.
- URI
- https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART001850408https://repository.hanyang.ac.kr/handle/20.500.11754/184389
- ISSN
- 1229-1935;2288-9000
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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