Hexamethylenetetramine-mediated TiO2 films: Facile chemical synthesis strategy and their use in nitrogen dioxide detection
Hexamethylenetetramine (HMT)-mediated rutile and polycrystalline TiO2 films are directly grown on a glass substrate by a simple chemical wet deposition method at ambient temperature. After confirming the crystallinity, phase-purity and surface morphology, as-grown TiO2 films were explored for a vari...
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Published in | Materials letters Vol. 173; pp. 9 - 12 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
15.06.2016
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Subjects | |
Online Access | Get full text |
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Summary: | Hexamethylenetetramine (HMT)-mediated rutile and polycrystalline TiO2 films are directly grown on a glass substrate by a simple chemical wet deposition method at ambient temperature. After confirming the crystallinity, phase-purity and surface morphology, as-grown TiO2 films were explored for a variety of target gases including nitrogen dioxide, methanol, ethanol and ammonia at different temperatures for confirming the sensor application potential. The TiO2 film shows a maximum response of 43% to 100ppm NO2@180°C with fast response time of 16s. In addition, the TiO2 sensor film has potential to detect concentration of NO2 as low as 10ppm.
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•Facial synthesis strategy for the formation polycrystalline TiO2 films.•XRD and Raman analysis confirms the rutile phase of TiO2.•TiO2 films were highly sensitive and selective towards NO2 gas@180°C.•TiO2 film is able to detect as low as 10ppm NO2 concentration. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0167-577X 1873-4979 |
DOI: | 10.1016/j.matlet.2016.02.140 |