Synthesis of Ag-Pt bimetallic functionalized ?-Fe2O3 for rapid triethylamine detection at low temperature

被引：4
|
作者：
Bi, Yubo [1 ]
Zhao, Yang [1 ]
Meng, Xiaoning [1 ]
Cong, Haiyong [1 ]
Gao, Wei [1 ]
机构：
[1] Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2023年 / 813卷
关键词：
Triethylamine; Sensors; Semiconductors; Ag-Pt bimetallic; Fast response; Low temperature; DIELECTRIC-PROPERTIES;
D O I：
10.1016/j.cplett.2023.140301
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Noble metal sensitization is an effective method to improve the properties of metal oxide semiconductor based gas sensors. Herein, a novel Ag-Pt bimetallic functionalized alpha-Fe2O3 was synthesized by calcination of carbon microsphere templates loaded with Fe, Ag and Pt. The sample Ag-Pt/alpha-Fe2O3 showed a very fast response (2.5 s) and extremely large response (926) in 125 degrees C for 100 ppm triethylamine (TEA) vapor. The synergistic effect of electron sensitization and chemical sensitization generated by Ag and Pt greatly enhanced the TEA sensing performance of alpha-Fe2O3. This article provides an important strategy for synthesizing and improving alpha-Fe2O3 based TEA sensors.
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页数：7
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