Recum, Patrick and Hirsch, Thomas (2023) Graphene-based chemiresistive gas sensors. NANOSCALE ADVANCES, 6 (1). pp. 11-31. ISSN 2516-0230
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Gas sensors allow the monitoring of the chemical environment of humans, which is often crucial for their wellbeing or even survival. Miniaturization, reversibility, and selectivity are some of the key challenges for serial use of chemical sensors. This tutorial review describes critical aspects when using nanomaterials as sensing substrates for the application in chemiresistive gas sensors. Graphene has been shown to be a promising candidate, as it allows gas sensors to be operated at room temperature, possibly saving large amounts of energy. In this review, an overview is given on the general mechanisms for gas-sensitive semiconducting materials and the implications of doping and functionalization on the sensing parameters of chemiresistive devices. It shows in detail how different challenges, like sensitivity, response time, reversibility and selectivity have been approached by material development and operation modes. In addition, perspectives from the area of data analysis and intelligent algorithms are presented, which can further enhance these sensors' usability in the field. This review describes critical aspects and perspectives in data-analysis when using graphene-composite nanomaterials as substrates for chemiresistive gas sensors.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SENSING CHARACTERISTICS; SELECTIVE DETECTION; AIR-POLLUTION; WORK FUNCTION; OXIDE SHEETS; AMMONIA; TEMPERATURE; NO2; BREATH; PERFORMANCE |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Feb 2024 10:02 |
| Last Modified: | 21 Feb 2024 10:02 |
| URI: | https://pred.uni-regensburg.de/id/eprint/58907 |
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