物理吸附
钙钛矿(结构)
化学
二甲苯
吸附
解吸
分析化学(期刊)
产量(工程)
无机化学
材料科学
物理化学
色谱法
有机化学
苯
冶金
作者
Mengya Zhu,Le-Xi Zhang,Jun Yin,Jingjing Chen,Li–Jian Bie,Bradley D. Fahlman
标识
DOI:10.1016/j.snb.2018.11.124
摘要
A novel organic-inorganic layered perovskite compound (C4H9NH3)2PbI4 has been synthesized through a simple and high-yield solution method. For the first time, this layered perovskite was used as a candidate material for gas sensors. Gas sensors based on (C4H9NH3)2PbI4 provided unique gas-sensing properties toward 1–800 ppm p-xylene (p-C8H10) at the working temperature of 140 °C, including fast response, quick response-recovery, good selectivity and repeatability. The as-prepared (C4H9NH3)2PbI4 gas sensor can detect as low as 1 ppm concentration of p-xylene with a response of 11.8 at 140 °C. In situ diffuse reflectance Fourier transform infrared (DRFTIR) measurement shows that the p-xylene sensing mechanism can be mainly attributed to physical adsorption, which is different from other common gas-sensing metal oxides that are based on adsorption-redox-desorption mechanism.
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