Hydrogen sensing properties and mechanism of NiO-Nb₂O₅ composite nanoparticle-based electrical gas sensorsHydrogen sensing properties and mechanism of NiO-Nb2O5 composite nanoparticle-based electrical gas sensors
- Other Titles
- Hydrogen sensing properties and mechanism of NiO-Nb2O5 composite nanoparticle-based electrical gas sensors
- Authors
- Mirzaei, Ali; Sun, Gun-Joo; Lee, Jae Kyung; Lee, Chongmu; Choi, Seungbok; Kim, Hyoun Woo
- Issue Date
- Apr-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Sensors; Nanocomposites; Oxide semiconductors; Sol-gel processes
- Citation
- CERAMICS INTERNATIONAL, v.43, no.6, pp.5247 - 5254
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 43
- Number
- 6
- Start Page
- 5247
- End Page
- 5254
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20457
- DOI
- 10.1016/j.ceramint.2017.01.050
- ISSN
- 0272-8842
- Abstract
- A simple hydrothermal method was used to prepare NiO-Nb₂O₅ composite nanoparticle electrical sensors for the detection of hydrogen (H₂) at room temperature. To investigate the morphology and crystal structure of the synthesized powders, the synthesized nanoparticles were characterized by scanning electron microscopy and X-ray diffraction. The NiO-Nb₂O₅ composite nanoparticle sensor showed stronger and faster response to H₂ than the pristine Nb₂O₅ one at room temperature. Only weak responses were observed to carbon monoxide, methane and ethanol, indicating that the NiO-Nb₂O₅ composite nanoparticle sensor could be a potential candidate as a practical gas detector. In this study, the H₂ sensing properties and mechanism of NiO-Nb₂O₅ composite nanoparticle-based electrical gas sensors are discussed in detail.
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