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VNUHCM Journal of

Science and Technology Development

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam since 1997

ISSN: 1859-0128
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INVESTIGATION OF SENSITIVITY AND SELECTIVITY OF MWCNT–BASED SENSOR FOR AMMONIAC GAS DETECTION AT ROOM TEMPERATURE

Lich Quang Nguyen 1, *
Tu Cong Nguyen 1
Anh Tuan Ly 1
Thanh Phuc Tran 1
Pho Quoc Phan 1
Lam Huu Nguyen 1, 2

  1. School of Engineer Physics, Hanoi University of Science and Technology
  2. Advanced Institute for Science and Technology (AIST), Hanoi University of Science and Technology
Correspondence to: Lich Quang Nguyen, School of Engineer Physics, Hanoi University of Science and Technology. Email: pvphuc@hcmuns.edu.vn.
Volume & Issue: Vol. 15 No. 2 (2012) | Page No.: 62-69 | DOI: 10.32508/stdj.v15i2.1791
Published: 2012-06-30

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Copyright © 2012 by the author(s).

Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

Gas sensors based on multi-walled carbon nanotube (MWCNT) for detecting gaseous molecules of ammoniac (NH3) were developed and investigated. MWCNT film was grown directly by chemical vapor deposition (CVD) method on Pt electrodes to fabricate sensor device. The CNT based – gas sensor is shown sensitively and selectively to NH3 gas at room temperature.

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