The Effect of Thin Film Fabrication Techniques on the Performance of rGO Based NO2 Gas Sensors at Room Temperature

Shazrah Shahzad; Huaipeng Wang; Weiwei Li; Yilin Sun; Dan Xie; Tianling Ren

doi:10.3390/chemosensors10030119

The Effect of Thin Film Fabrication Techniques on the Performance of rGO Based NO₂ Gas Sensors at Room Temperature

Shazrah Shahzad, Huaipeng Wang, Weiwei Li^*, Yilin Sun, Dan Xie^*, Tianling Ren

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Tsinghua University

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Reduced graphene oxide (rGO) has attracted enormous interest as a promising candidate material for gas detection due to its large specific surface areas. In our work, rGO films were fabricated on a large scale using dip-coating and spin-coating methods for the detection of nitrogen dioxide (NO₂) gas at room temperature. The influence of different test environments on the sensing performance, including the test atmosphere, gas flow and gas pressure was evaluated. The response time of the dip-coating method was 573 s with a long recovery period of 639 s and for the spin-coating method, the response time and recovery time was 386 s and 577 s, respectively. In addition, the spin-coated sensor exhibited high selectivity to NO₂, with the response increasing by more than 20% (for 15 ppm NO₂) as compared with that for HCHO, NH₃, and CH₄. Our results indicated that the spin coating method was more suitable for rGO-based gas sensors with higher performance.

Original language	English
Article number	119
Journal	Chemosensors
Volume	10
Issue number	3
DOIs	https://doi.org/10.3390/chemosensors10030119
Publication status	Published - Mar 2022

Keywords

NO gas sensor
fabrication methods
reduced graphene oxide
room temperature

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10.3390/chemosensors10030119

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title = "The Effect of Thin Film Fabrication Techniques on the Performance of rGO Based NO2 Gas Sensors at Room Temperature",

abstract = "Reduced graphene oxide (rGO) has attracted enormous interest as a promising candidate material for gas detection due to its large specific surface areas. In our work, rGO films were fabricated on a large scale using dip-coating and spin-coating methods for the detection of nitrogen dioxide (NO2) gas at room temperature. The influence of different test environments on the sensing performance, including the test atmosphere, gas flow and gas pressure was evaluated. The response time of the dip-coating method was 573 s with a long recovery period of 639 s and for the spin-coating method, the response time and recovery time was 386 s and 577 s, respectively. In addition, the spin-coated sensor exhibited high selectivity to NO2, with the response increasing by more than 20% (for 15 ppm NO2) as compared with that for HCHO, NH3, and CH4. Our results indicated that the spin coating method was more suitable for rGO-based gas sensors with higher performance.",

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author = "Shazrah Shahzad and Huaipeng Wang and Weiwei Li and Yilin Sun and Dan Xie and Tianling Ren",

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doi = "10.3390/chemosensors10030119",

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AU - Shahzad, Shazrah

AU - Wang, Huaipeng

AU - Li, Weiwei

AU - Sun, Yilin

AU - Xie, Dan

AU - Ren, Tianling

PY - 2022/3

Y1 - 2022/3

N2 - Reduced graphene oxide (rGO) has attracted enormous interest as a promising candidate material for gas detection due to its large specific surface areas. In our work, rGO films were fabricated on a large scale using dip-coating and spin-coating methods for the detection of nitrogen dioxide (NO2) gas at room temperature. The influence of different test environments on the sensing performance, including the test atmosphere, gas flow and gas pressure was evaluated. The response time of the dip-coating method was 573 s with a long recovery period of 639 s and for the spin-coating method, the response time and recovery time was 386 s and 577 s, respectively. In addition, the spin-coated sensor exhibited high selectivity to NO2, with the response increasing by more than 20% (for 15 ppm NO2) as compared with that for HCHO, NH3, and CH4. Our results indicated that the spin coating method was more suitable for rGO-based gas sensors with higher performance.

AB - Reduced graphene oxide (rGO) has attracted enormous interest as a promising candidate material for gas detection due to its large specific surface areas. In our work, rGO films were fabricated on a large scale using dip-coating and spin-coating methods for the detection of nitrogen dioxide (NO2) gas at room temperature. The influence of different test environments on the sensing performance, including the test atmosphere, gas flow and gas pressure was evaluated. The response time of the dip-coating method was 573 s with a long recovery period of 639 s and for the spin-coating method, the response time and recovery time was 386 s and 577 s, respectively. In addition, the spin-coated sensor exhibited high selectivity to NO2, with the response increasing by more than 20% (for 15 ppm NO2) as compared with that for HCHO, NH3, and CH4. Our results indicated that the spin coating method was more suitable for rGO-based gas sensors with higher performance.

KW - NO gas sensor

KW - fabrication methods

KW - reduced graphene oxide

KW - room temperature

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The Effect of Thin Film Fabrication Techniques on the Performance of rGO Based NO₂ Gas Sensors at Room Temperature

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Keywords

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