A nest-like TiO2 nanostructures for excellent performance ethanol sensor

A nest-like TiO2 structure with remarkable gas sensitivity toward ethanol. [Display omitted] •A Multilayer nest-like TiO2 nanostructure has been synthesized by simple hydrothermal method.•The gas sensor based on the nest-like TiO2 shows excellent response to ethanol.•The plausible mechanism involved...

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Bibliographic Details
Published in:Materials letters 2019-08, Vol.248, p.82-85
Main Authors: Yu, Wenlin, Zeng, Wen, Li, Yanqiong
Format: Article
Language:English
Subjects:
Chemical reactions
Comparative studies
Electronic property
Ethanol
Functional
Gas sensors
Gas transmission
Materials science
Multilayers
Nanostructure
Nanowires
Net like structures
Organic chemistry
Semiconductor
Titanium dioxide
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Summary:A nest-like TiO2 structure with remarkable gas sensitivity toward ethanol. [Display omitted] •A Multilayer nest-like TiO2 nanostructure has been synthesized by simple hydrothermal method.•The gas sensor based on the nest-like TiO2 shows excellent response to ethanol.•The plausible mechanism involved in enhancing the gas sensing performances was discussed. A multilayer nest-like TiO2 nanostructure assembled from one-dimensional nanowires has been synthesized by a simple hydrothermal method. This special structure not only has the characteristics of a network structure with many nanojunctions but also has high efficiency of gas transmission. We have revealed its remarkable gas sensitive property toward ethanol through a comparative study with unmodified nanowires. It is believed that its excellent gas sensing is due to its special nest-like structure providing a large number of chemical reaction chambers and sufficient gas transmission channels.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2019.04.009