NDLI: Self-assembled SnO$_{2}$ colloidal particles and their gas sensing performance to H$_{2}$, C$_{2}$H$

Content Provider	Springer Nature Link
Author	Ji, Hongjun Liu, Xiaoheng Wang, Xin Yang, Xujie Lu, Lude Ge, Xiutao Li, Yonghong
Copyright Year	2011
Abstract	Using organo-tin Sn(OC$_{4}$H$_{9}$)$_{4}$ as precursor, sodium dodecyl sulfonate (SDS) and SDS-gelatin (SDS-G) complex as template, two tin dioxide colloidal particles were prepared by a self-assembly method. Both SnO$_{2}$ products were respectively labelled SnO$_{2}$-B particles with SDS and SnO$_{2}$-C particles with SDS-G, which are applied in fabricating SnO$_{2}$ gas sensors corresponding to SnO$_{2}$-B′ and SnO$_{2}$-C′ sensors. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermogravimetry and different thermal analysis (TG/DTA) were used for characterizations. The experimental results show that SnO$_{2}$-B colloidal particles are composed of mesoporous piece-like particles, while SnO$_{2}$-C particles mainly consist of spherical particles. Gas sensing measurements show that SnO$_{2}$-B′ sensor performs the best sensing response to all target gases, including H$_{2}$, C$_{2}$H$_{5}$OH and liquid petroleum gas (LPG). In particular, the sensing response of SnO$_{2}$-B′ sensor is achieved at 32 in H$_{2}$ atmosphere at the concentration of 1000×10$^{−6}$ M. The gas sensing mechanism was purposely discussed from the electron transfer process and the microstructures of the as-prepared SnO$_{2}$ products. It is found that serious agglomerations in SnO$_{2}$-B′ particles facilitate the high gas sensing performance of SnO$_{2}$-B′ sensor, while mesoporous structures in SnO$_{2}$-C′ particles decrease the gas sensing response of SnO$_{2}$-C′ sensor.
Starting Page	661
Ending Page	667
Page Count	7
File Format	PDF
ISSN	10002413
Journal	Journal of Wuhan University of Technology-Mater. Sci. Ed.
Volume Number	26
Issue Number	4
e-ISSN	19930437
Language	English
Publisher	Wuhan University of Technology
Publisher Date	2011-07-26
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	SnO$_{2}$ gas sensors self-assemble SDS gelatin Materials Science
Content Type	Text
Resource Type	Article
Subject	Materials Science

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