期刊
MATERIALS LETTERS
卷 231, 期 -, 页码 194-197出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.08.057
关键词
V2O5; Pd nanoparticles; Sensors; Nanocomposites; Room temperature
资金
- National Natural Science Foundation of China [61271070, 60771019, 61574100]
- China Scholarship Council
A novel room temperature (RT, 25 degrees C) NO2 gas sensor by utilizing porous silicon (PSi)/V2O5 nanopillars (VONPs) decorated with Pd nanoparticles as sensitive materials was successfully synthesized via a facile methods that reduction of a Pd solution followed by thermal annealing of V film on PSi substrate. The NO2-sensing analysis revealed that the PSi/VONPs-Pd showed obviously enhanced response and selectivity towards NO2, as compared to PSi/VONPs and Si/VONPs. The maximum response of PSi/VONPs-Pd sensor was performed at RT, therefore it has great potential to be used as a RT NO2 gas sensor in practical. The mechanism of gas sensing and enhanced gas response of PSi/VONPs-Pd was discussed. (C) 2018 Elsevier B.V. All rights reserved.
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