期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 38, 页码 42962-42970出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c12363
关键词
In2O3; hollow hexagonal microtubes; gas sensor; triethylamine; high sensitivity and selectivity; antihumidity
资金
- National Natural Science Foundation of China [51562038]
- Yunnan Key Project of Natural Science Foundation of Yunnan [2018FY001(-011)]
- Yunnan Basic Applied Research Project [2017FB086]
- Yunnan University's Research Innovation Fund for Graduate Students [2019z055]
Triethylamine is extremely harmful to human health, and chronic inhalation can lead to respiratory and hematological diseases and eye lesions. Hence, it is essential to develop a triethylamine gas-sensing technology with high response, selectivity, and stability for use in healthcare and environmental monitoring. In this work, a simple and low-cost sensor based on the Pt- and Ce-modified In2O3 hollow structure to selectively detect triethylamine is developed. The experimental results reveal that the sensor based on 1% Pt/Ce12In exhibits excellent triethylamine-sensing performance, including its insusceptibility to water, reduced operating temperature, enhanced response, and superior long-term stability. This work suggests that the enhancement of sensing performance toward triethylamine can be attributed to the high relative contents of O-V and O-C, large specific surface area, catalytic effect, the electronic sensitization of Pt, and the reversible redox cycle properties of Ce. This sensor represents a unique and highly sensitive means to detect triethylamine, which shows great promise for potential applications in food safety inspection and environmental monitoring.
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