Influence of PANi Additions on methanol sensing properties of ZnO thin films

The influence of PANI additions on methanol sensing properties of ZnO thin films at room temperature had been investigated. Commercial polyaniline powder (PANI) was mixed into 3 mL ZnO solution in five different weight percentages namely 1.25, 2.50, 3.75, 5.00 and 6.25% to obtain ZnO/PANI composite...

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Main Authors:	Mohammad Hafizuddin Hj Jumali, Norhashimah Ramli, Izura Izzuddin, Muhamad Mat Salleh, Muhammad Yahaya
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2011
Online Access:	http://journalarticle.ukm.my/698/ http://journalarticle.ukm.my/698/ http://journalarticle.ukm.my/698/1/02_M._Hafizuddin.pdf

id	ukm-698
recordtype	eprints
spelling	ukm-6982016-12-14T06:27:55Z http://journalarticle.ukm.my/698/ Influence of PANi Additions on methanol sensing properties of ZnO thin films Mohammad Hafizuddin Hj Jumali, Norhashimah Ramli, Izura Izzuddin, Muhamad Mat Salleh, Muhammad Yahaya, The influence of PANI additions on methanol sensing properties of ZnO thin films at room temperature had been investigated. Commercial polyaniline powder (PANI) was mixed into 3 mL ZnO solution in five different weight percentages namely 1.25, 2.50, 3.75, 5.00 and 6.25% to obtain ZnO/PANI composite solutions. These solutions were spin coated onto glass substrate to form thin films. Microstructural studies by FESEM indicated that ZnO/PANI films showed porous structures with nanosize grains. The thickness of the film increased from 55 to 256 nm, proportionate to increment of PANI. The presence of 2 adsorption peaks at ~310 and ~610 nm in UV-Vis spectrum proved that addition of PANI has modified the adsorption peak of ZnO film. Methanol vapour detection showed that addition of PANI into ZnO dramatically improved the sensing properties of the sensor. The sensors also exhibited good repeatability and reversibility. Sensor with the amount of PANI of 3.75 wt% exhibited the highest sensitivity with response and recovery time was about 10 and 80 s, respectively. The possible sensing mechanism of the sensor was also discussed in this article. Universiti Kebangsaan Malaysia 2011-03 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/698/1/02_M._Hafizuddin.pdf Mohammad Hafizuddin Hj Jumali, and Norhashimah Ramli, and Izura Izzuddin, and Muhamad Mat Salleh, and Muhammad Yahaya, (2011) Influence of PANi Additions on methanol sensing properties of ZnO thin films. Sains Malaysiana, 40 (3). pp. 203-208. ISSN 0126-6039 http://www.ukm.my/jsm
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The influence of PANI additions on methanol sensing properties of ZnO thin films at room temperature had been investigated. Commercial polyaniline powder (PANI) was mixed into 3 mL ZnO solution in five different weight percentages namely 1.25, 2.50, 3.75, 5.00 and 6.25% to obtain ZnO/PANI composite solutions. These solutions were spin coated onto glass substrate to form thin films. Microstructural studies by FESEM indicated that ZnO/PANI films showed porous structures with nanosize grains. The thickness of the film increased from 55 to 256 nm, proportionate to increment of PANI. The presence of 2 adsorption peaks at ~310 and ~610 nm in UV-Vis spectrum proved that addition of PANI has modified the adsorption peak of ZnO film. Methanol vapour detection showed that addition of PANI into ZnO dramatically improved the sensing properties of the sensor. The sensors also exhibited good repeatability and reversibility. Sensor with the amount of PANI of 3.75 wt% exhibited the highest sensitivity with response and recovery time was about 10 and 80 s, respectively. The possible sensing mechanism of the sensor was also discussed in this article.
format	Article
author	Mohammad Hafizuddin Hj Jumali, Norhashimah Ramli, Izura Izzuddin, Muhamad Mat Salleh, Muhammad Yahaya,
spellingShingle	Mohammad Hafizuddin Hj Jumali, Norhashimah Ramli, Izura Izzuddin, Muhamad Mat Salleh, Muhammad Yahaya, Influence of PANi Additions on methanol sensing properties of ZnO thin films
author_facet	Mohammad Hafizuddin Hj Jumali, Norhashimah Ramli, Izura Izzuddin, Muhamad Mat Salleh, Muhammad Yahaya,
author_sort	Mohammad Hafizuddin Hj Jumali,
title	Influence of PANi Additions on methanol sensing properties of ZnO thin films
title_short	Influence of PANi Additions on methanol sensing properties of ZnO thin films
title_full	Influence of PANi Additions on methanol sensing properties of ZnO thin films
title_fullStr	Influence of PANi Additions on methanol sensing properties of ZnO thin films
title_full_unstemmed	Influence of PANi Additions on methanol sensing properties of ZnO thin films
title_sort	influence of pani additions on methanol sensing properties of zno thin films
publisher	Universiti Kebangsaan Malaysia
publishDate	2011
url	http://journalarticle.ukm.my/698/ http://journalarticle.ukm.my/698/ http://journalarticle.ukm.my/698/1/02_M._Hafizuddin.pdf
first_indexed	2023-09-18T19:31:33Z
last_indexed	2023-09-18T19:31:33Z
_version_	1777404994414182400

Influence of PANi Additions on methanol sensing properties of ZnO thin films

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