P2NG.7 - High Sensitive NO2 Gas Sensor Based on Self-assembled Monolayer Graphene Decorated with Ag Nanoparticles
- Event
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria - Chapter
- P-2 - Nanomaterials for Gas Sensing
- Author(s)
- X. Jia, X. Wang - Department of Microelectronics and Nanoelectronics,Tsinghua University, Beijing (China)
- Pages
- 857 - 858
- DOI
- 10.5162/IMCS2018/P2NG.7
- ISBN
- 978-3-9816876-9-9
- Price
- free
Abstract
We present a high performance NO2 gas sensor based on neat monolayer graphene film decorated with Ag nanoparticles. The RGO/Ag nanocomposites were bound to the electrode by the 3-Aminopropyltriethoxysilane (APTES) assisted self-assembly technique. In the hybrid material, the sensing film with few overlapping and gaps provides large sensing area per unit volume. Besides, with the catalytic activity of the uniformly loaded Ag nanoparticles, it exhibits high sensitivity. This sensor can work at room temperature, which makes it available for practical application. Furthermore, it can fully recover to the initial state without the treatment of heating or light irradiation, which shows good reversibility.