A Flexible, Ultrasensitive, and Highly Selective Bi-Functional Acetone and Ethanol Gas Sensor

Md Tawabur Rahman, Md Saleh Akram Bhuiyan, Md Jahirul Islam, Khan Mamun Reza, Ashim Gurung, Quinn Qiao

Research output: Chapter in Book/Entry/PoemConference contribution

1 Scopus citations

Abstract

To date, most of the acetone and ethanol gas sensors suffer from common issues including low sensitivity, poor selectivity, and high energy consumption for practical applications. This work reports a flexible, ultrasensitive, and highly selective bi-functional acetone and ethanol gas sensor on a single chip based on molecular imprinted technology. A thin layer of graphene is deposited on a plastic substrate using spray coating between two gold electrodes. The gas sensing mechanism is based on the change in the electrical conductivity of graphene upon the adsorption and desorption of gas molecules. The sensors show linear response in the targeted range of 1-10 ppm of acetone and 130-210 ppm of ethanol. Additionally, the sensors exhibit a high sensitivity of 17.50/Ω ppm for acetone and 3.45/Ω ppm for ethanol. The limit of detection (LOD) was calculated to be 0.26 ppm and 78.76 ppm for acetone and ethanol, respectively. Moreover, the proposed sensors show high reproducibility and stability.

Original languageEnglish (US)
Title of host publication12th International Conference on Electrical and Computer Engineering, ICECE 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages84-87
Number of pages4
ISBN (Electronic)9798350398793
DOIs
StatePublished - 2022
Event12th International Conference on Electrical and Computer Engineering, ICECE 2022 - Dhaka, Bangladesh
Duration: Dec 21 2022Dec 23 2022

Publication series

Name12th International Conference on Electrical and Computer Engineering, ICECE 2022

Conference

Conference12th International Conference on Electrical and Computer Engineering, ICECE 2022
Country/TerritoryBangladesh
CityDhaka
Period12/21/2212/23/22

Keywords

  • Graphene
  • acetone gas sensor
  • ethanol gas sensor
  • molecular imprinted layer
  • spray coating

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering
  • Instrumentation

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