| Issue |
MATEC Web Conf.
Volume 192, 2018
The 4th International Conference on Engineering, Applied Sciences and Technology (ICEAST 2018) “Exploring Innovative Solutions for Smart Society”
|
|
|---|---|---|
| Article Number | 02048 | |
| Number of page(s) | 4 | |
| Section | Track 2: Mechanical, Mechatronics and Civil Engineering | |
| DOI | https://doi.org/10.1051/matecconf/201819202048 | |
| Published online | 14 August 2018 | |
Development of ammonia gas sensor based on Ni-doped reduce graphene oxide
1
Thailand Advanced Institute of Science and Technology (TAIST-Tokyo Tech), Sirindhorn International Institute of Technology (SIIT), Thammasat University, Phathum Thani 12121, Thailand
2
School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Phathum Thani 12121, Thailand
3
National Electronics and Computer Technology Center (NECTEC), National Science and Technology Development Agency, Thailand Science Park, Klong Luang, Pathumthani 12120, Thailand
4
National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Thailand Science Park, Klong Luang, Pathumthani 12120, Thailand
*
Corresponding author : paiboon_sree@siit.tu.ac.th
The work aims to develop a simple and low cost ammonia gas sensor based on reduced graphene oxide (rGO). Reduced graphene oxide doped with nickel sulfate (NiSO4/rGO) was used as a sensing material. The sensor was fabricated by a simple drop-cast and spin-coat technique. The performance of the nickel-doped reduce graphene oxide were studied in terms of electrical changes as well as chemical interactions. It was found that after the fabricated sensor was exposed to ammonia vapour for 10 min, the average resistivity was increased to 43% from initial resistance and retained about 8% resistance change upon ammonia removal. The mechanism of the sensor reaction with the ammonia gas is also studied using Fourier Transform Infrared Spectroscopy (FTIR) and is discussed. This preliminary work may help develop the highly sensitive ammonia gas sensor.
© The Authors, published by EDP Sciences, 2018
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