The effect of surface microstructure on the response of titanium dioxide coated with cobalt-porphyrin thin films towards gases in quartz crystal microbalance sensor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A single-layer and multi-layer titanium dioxide (TiO2) coated with dye porphyrin thin films were prepared on Quartz Crystal Microbalance (QCM) using sol-gel dip coating method and were tested for sensing of volatile organic compounds (VOCs). The porphyrin was 2,3,7,8,12,13,17,18-octaethyl-21H, 23H-porphine cobalt (II). The sensing sensitivity was based on the change in the fundamental frequency of the QCM upon exposure towards three vapor samples, namely ethanol, acetone and 2-propanol. It was found that the thin films were sensitive towards all vapors and the sensing sensitivity was affected by the number of film layers. Although the three-layer film exhibited higher frequency response compared with the other films that have small number of layers, the sensing properties of this film are not repeatable and less selective. The performance of the QCM sensor was depended on microstructure of the thin film which was varied through the number layers.

Original languageEnglish
Title of host publicationIEEE International Conference on Semiconductor Electronics, Proceedings, ICSE
Pages281-285
Number of pages5
DOIs
Publication statusPublished - 2006
Event2006 IEEE International Conference on Semiconductor Electronics, ICSE 2006 - Kuala Lumpur
Duration: 29 Nov 20061 Dec 2006

Other

Other2006 IEEE International Conference on Semiconductor Electronics, ICSE 2006
CityKuala Lumpur
Period29/11/061/12/06

Fingerprint

Quartz crystal microbalances
Porphyrins
Titanium dioxide
Cobalt
Thin films
Microstructure
Sensors
Gases
Vapors
Propanol
Volatile organic compounds
Acetone
Frequency response
Sol-gels
Ethanol
Dyes
Coatings

ASJC Scopus subject areas

  • Engineering(all)

Cite this

The effect of surface microstructure on the response of titanium dioxide coated with cobalt-porphyrin thin films towards gases in quartz crystal microbalance sensor. / Arshad, Syariena; Mat Salleh, Muhamad; Yahaya, Muhammad.

IEEE International Conference on Semiconductor Electronics, Proceedings, ICSE. 2006. p. 281-285 4266615.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Arshad, S, Mat Salleh, M & Yahaya, M 2006, The effect of surface microstructure on the response of titanium dioxide coated with cobalt-porphyrin thin films towards gases in quartz crystal microbalance sensor. in IEEE International Conference on Semiconductor Electronics, Proceedings, ICSE., 4266615, pp. 281-285, 2006 IEEE International Conference on Semiconductor Electronics, ICSE 2006, Kuala Lumpur, 29/11/06. https://doi.org/10.1109/SMELEC.2006.381065
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