| Autor: |
Zhang, Bo, Lin, Hui-Jan, Gao, Haiyong, Lu, Xingxu, Nam, Chang-Yong, Gao, Pu-Xian |
| Zdroj: |
Journal of Materials Chemistry A; 6/7/2020, Vol. 8 Issue 21, p10845-10854, 10p |
| Abstrakt: |
Amongst various gaseous pollutants, NO2 is one of the major exhausts originating from fossil fuel and gas combustions in vehicle engines and power plants at high temperature. Under such a scenario, in situ and real-time gas detection and monitoring solutions are largely limited, which hinders the energy-efficient and resource-saving operations of these advanced energy systems. In this report, a new type of perovskite-sensitized β-Ga2O3 nanorod-array has been successfully fabricated to detect NOx at high temperature selectively and sensitively. The demonstrated gas sensors are highly sensitive to NO2 at 800 °C, with excellent reversible and reproducible response characteristics. Through the surface decoration of perovskite-type La0.8Sr0.2CoO3 (LSCO) nanoparticles, the sensitivity of β-Ga2O3 nanorod array gas sensors is enhanced by nearly an order of magnitude, along with much faster response dynamics. A remarkable selectivity toward oxidative gases was also demonstrated with the robust differentiation of NO2. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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