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

[Display omitted] •Ag-Pt bimetallic functionalized α-Fe2O3 successfully synthesized.•Ag-Pt/α-Fe2O3 can be used for rapid detection of TEA vapor at 125 °C.•The mechanism of sensing enhancement of Ag-Pt bimetallic was investigated. Noble metal sensitization is an effective method to improve the proper...

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Bibliographic Details
Published inChemical physics letters Vol. 813; p. 140301
Main Authors Bi, Yubo, Zhao, Yang, Meng, Xiaoning, Cong, Haiyong, Gao, Wei
Format Journal Article
LanguageEnglish
Published Elsevier B.V 16.02.2023
Subjects
Ag-Pt bimetallic
Fast response
Low temperature
Semiconductors
Sensors
Triethylamine
Sensors
Semiconductors
Fast response
Triethylamine
Ag-Pt bimetallic
Low temperature
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Summary:[Display omitted] •Ag-Pt bimetallic functionalized α-Fe2O3 successfully synthesized.•Ag-Pt/α-Fe2O3 can be used for rapid detection of TEA vapor at 125 °C.•The mechanism of sensing enhancement of Ag-Pt bimetallic was investigated. 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 α-Fe2O3 was synthesized by calcination of carbon microsphere templates loaded with Fe, Ag and Pt. The sample Ag-Pt/α-Fe2O3 showed a very fast response (2.5 s) and extremely large response (926) in 125 °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 α-Fe2O3. This article provides an important strategy for synthesizing and improving α-Fe2O3 based TEA sensors.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2023.140301