Ultrahigh-response hydrogen sensor based on PdO/NiO co-doped In2O3 nanotubes
| Autor: | Yanrong Wang, Jinglong Bai, Zhengkun Wu, Erqing Xie, Yibing Luo, Xu Cheng, Qiao Wang, Yifan Yang, Jianpeng Li, Beixi An |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Electrolysis of water Hydrogen Doping Non-blocking I/O chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Combustion 01 natural sciences Hydrogen sensor Electrospinning 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Colloid and Surface Chemistry Operating temperature Chemical engineering chemistry 0210 nano-technology |
| Zdroj: | Journal of Colloid and Interface Science. 599:533-542 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2021.04.125 |
| Popis: | Hydrogen can be regarded as an ideal type of secondary energy considering its potential for achieving renewable and sustainable development due to water being its sole combustion product and its possible production by solar energy-based water electrolysis. Monitoring the presence and concentration of hydrogen during production, transportation, and application requires a hydrogen gas sensor with high response, high selectivity, and fast response and recovery times. In an attempt to meet these requirements, NiO and PdO are used in the co-doping of In2O3 nanotubes by subsequent electrospinning and impregnation under UV irradiation. The fabricated hydrogen gas sensor demonstrates an ultrahigh response of 487.52, a fast response time of 1 s and high selectivity at an operating temperature of 160 °C, which characteristics are superior to reported monometal-doped hydrogen sensors. The remarkable gas sensing performance could be attributed to the synergistic effect of the resistance modulation, the chemical sensitization of PdO, and the catalytic effect of NiO. This study demonstrates that co-doping of PdO and NiO on In2O3 nanotubes is an effective way to improve hydrogen sensing characteristics more effectively than doping with PdO or NiO alone, and provides a potential application for the fast and accurate detection of hydrogen. |
| Databáze: | OpenAIRE |
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