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Proceedings Paper

Effect of Polyaniline additions on structural and gas sensing behaviour of metal oxides thin films
Author(s): Mohammad Hafizuddin Hj. Jumali; Izura Izzuddin; Norhashimah Ramli; Muhamad Mat Salleh; Muhammad Yahaya
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Paper Abstract

The structural and gas sensing behaviour of metal oxides namely TiO2 and ZnO thin films were investigated. In this paper, commercial Polyaniline (PANi) powder were added into two different metal oxides sol gel solutions with PANi : metal oxides weight ratios of 1wt.%, 2wt.% and 3wt.%. The thin films were fabricated using spin coating technique. Structural investigation using XRD presented that all films exhibited amorphous structure. Typical films surface morphology consists of agglomerated round shaped particles with the particles size varies between 57nm to 200nm. Addition of PANi formed network chains between the particles. Ethanol vapor detection test conducted at room temperature showed that both TiO2 and ZnO based films were capable to sense the vapor. The optimum ratio in sensing ethanol vapour for both PANi-TiO2 and PANi-ZnO films was 3:1. However, other issues such as reliability, selectability and repeatability remain as the major problems.

Paper Details

Date Published: 21 October 2009
PDF: 7 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74930B (21 October 2009); doi: 10.1117/12.840182
Show Author Affiliations
Mohammad Hafizuddin Hj. Jumali, Univ. Kebangsaan Malaysia (Malaysia)
Izura Izzuddin, Univ. Kebangsaan Malaysia (Malaysia)
Norhashimah Ramli, Univ. Kebangsaan Malaysia (Malaysia)
Muhamad Mat Salleh, Univ. Kebangsaan Malaysia (Malaysia)
Muhammad Yahaya, Univ. Kebangsaan Malaysia (Malaysia)


Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering

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