Hydrogen sensing properties and mechanism of NiO-Nb2O5 composite nanoparticle-based electrical gas sensors
| Autor: | Seung-Bok Choi, Hyoun Woo Kim, Chongmu Lee, Jae Kyung Lee, Ali Mirzaei, Gun-Joo Sun |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanocomposite Hydrogen Scanning electron microscope Process Chemistry and Technology Non-blocking I/O Composite number Nanoparticle chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Materials Chemistry Ceramics and Composites Gas detector 0210 nano-technology Carbon monoxide |
| Zdroj: | Ceramics International. 43:5247-5254 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2017.01.050 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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