长石
丙醇
纳米颗粒
化学
分析化学(期刊)
材料科学
纳米技术
色谱法
有机化学
甲醇
氧化物
作者
Wentao Li,Lingwei Kong,Xifeng Li,Wenhuan Zhu,Jianhua Zhang,Hai Liu
出处
期刊:Social Science Research Network
[Social Science Electronic Publishing]
日期:2022-01-01
被引量:1
摘要
As an important biomarker of lung cancer, n-propanol at sub-ppm level is still challenging to be detected for a simple and immediate early diagnose. In this work, a new n-propanol gas sensor with an ultralow detection limit down to 100 ppb is presented using AgCrO2 nanoparticles synthesized by a simple hydrothermal method. Compared with the congeneric CuCrO2 and commercial SnO2 , AgCrO2 exhibits prevailing performances, including a higher selectivity, dynamic response, logarithmical linearity, but lower working temperature. The first principles calculation and the energy band theoretical analysis are combined to elucidate the sensing mechanism, in which the chemical adsorption of gaseous molecules to the silver followed by the dehydrogenation on chromium on the surface of AgCrO2 is responsible to the outstanding susceptibility towards n-propanol. The proposed metal oxide semiconductor gas sensor capable of sub-ppm n-propanol detection provides a route to design and optimize the sensitive material system for the advanced trace detection of the volatile organic compounds.
科研通智能强力驱动
Strongly Powered by AbleSci AI