Effect of Polyaniline additions on structural and gas sensing behaviour of metal oxides thin films

Mohammad Hafizuddin Hj. Jumali; Izura Izzuddin; Norhashimah Ramli; Muhamad Mat Salleh; Muhammad Yahaya

doi:10.1117/12.840182

20 October 2009 Effect of Polyaniline additions on structural and gas sensing behaviour of metal oxides thin films

Mohammad Hafizuddin Hj. Jumali, Izura Izzuddin, Norhashimah Ramli, Muhamad Mat Salleh, Muhammad Yahaya

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74930B (2009) https://doi.org/10.1117/12.840182
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

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.

Citation Download Citation

Mohammad Hafizuddin Hj. Jumali, Izura Izzuddin, Norhashimah Ramli, Muhamad Mat Salleh, and Muhammad Yahaya "Effect of Polyaniline additions on structural and gas sensing behaviour of metal oxides thin films", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74930B (20 October 2009); https://doi.org/10.1117/12.840182

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