Vanadium-doped tin oxide porous nanofibers: Enhanced responsivity for hydrogen detection

Vanadium (V)-doped tin oxide (SnO2) one-dimensional porous nanofibers (PNFs) were fabricated for the hydrogen detection application. V-doping changes the distances of different facets of the SnO2 crystal in different roles, and therefore deform or distort the SnO2 structure. The modulation effects o...

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Bibliographic Details
Published in:Talanta (Oxford) 2017-05, Vol.167, p.638-644
Main Authors: Xu, Xiuru, Yin, Min, Li, Na, Wang, Wei, Sun, Bolun, Liu, Ming, Zhang, Dongwei, Li, Zhenyu, Wang, Ce
Format: Article
Language:English
Subjects:
Hydrogen sensor
Metal oxide
Porous nanofiber
Vanadium doping
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Summary:Vanadium (V)-doped tin oxide (SnO2) one-dimensional porous nanofibers (PNFs) were fabricated for the hydrogen detection application. V-doping changes the distances of different facets of the SnO2 crystal in different roles, and therefore deform or distort the SnO2 structure. The modulation effects of V4+ and V5+ on hydrogen detecting performance were discussed. With a suitable amount of V-doping, the porous SnO2 nanofibers exhibits ~66% increase of response sensitivity, 33% faster in response (2s) and 50% faster in recovery time (1s), comparing with undoped SnO2 nanofibers. [Display omitted] •Ultrahigh performance noble metal-free hydrogen sensor with porous nanofiber structure was fabricated.•Different doping valence states modulate the sensing performance.•Doping causes the deforming or distorting of nanocrystals.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2017.03.013