Mesoporous Au@ZnO flower-like nanostructure for enhanced formaldehyde sensing performance
Author(s)
Liu, Di
Wan, Jiawei
Wang, Hong
Pang, Gangsheng
Tang, Zhiyong
Griffith University Author(s)
Year published
2019
Metadata
Show full item recordAbstract
The Au@ZnO flower-like nanostructure was successfully prepared by the facile hydrothermal method, and its gas-sensing property was studied. The produced Au@ZnO nanostructure presented an average diameter size of 170 ± 17 nm, and displayed an embedding structure with Au nanoparticle (average diameter size of 32 ± 6 nm) inside and a mesoporous ZnO layer outside. Impressively, the Au@ZnO flower-like nanostructure exhibited high sensitivity and remarkable selectivity toward HCHO, when it was applied for gas sensor. Compared with bare ZnO nanoparticles, the response value of the Au@ZnO nanoparticles toward 100 ppm HCHO at 220 °C ...
View more >The Au@ZnO flower-like nanostructure was successfully prepared by the facile hydrothermal method, and its gas-sensing property was studied. The produced Au@ZnO nanostructure presented an average diameter size of 170 ± 17 nm, and displayed an embedding structure with Au nanoparticle (average diameter size of 32 ± 6 nm) inside and a mesoporous ZnO layer outside. Impressively, the Au@ZnO flower-like nanostructure exhibited high sensitivity and remarkable selectivity toward HCHO, when it was applied for gas sensor. Compared with bare ZnO nanoparticles, the response value of the Au@ZnO nanoparticles toward 100 ppm HCHO at 220 °C is more than five times higher (45.28 vs. 8.86). The detailed investigations revealed that the Au nanoparticles inside contributed to the formation of Schottky barrier, which enhanced the sensitivity toward HCHO.
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View more >The Au@ZnO flower-like nanostructure was successfully prepared by the facile hydrothermal method, and its gas-sensing property was studied. The produced Au@ZnO nanostructure presented an average diameter size of 170 ± 17 nm, and displayed an embedding structure with Au nanoparticle (average diameter size of 32 ± 6 nm) inside and a mesoporous ZnO layer outside. Impressively, the Au@ZnO flower-like nanostructure exhibited high sensitivity and remarkable selectivity toward HCHO, when it was applied for gas sensor. Compared with bare ZnO nanoparticles, the response value of the Au@ZnO nanoparticles toward 100 ppm HCHO at 220 °C is more than five times higher (45.28 vs. 8.86). The detailed investigations revealed that the Au nanoparticles inside contributed to the formation of Schottky barrier, which enhanced the sensitivity toward HCHO.
View less >
Journal Title
Inorganic Chemistry Communications
Volume
102
Subject
Inorganic chemistry
Other chemical sciences