Enhanced benzene sensing property of Au-Pd@ZnO and Au-Pt@ZnO core-shell nanoparticles: The function of Pt/Pd decorated Au-ZnO hetero-interface

被引：11
作者：
Yang, Min [1 ]
Gong, Yan [2 ]
Shen, Genli [2 ]
Wang, Zhen [2 ]
Liu, Mi [2 ]
Wang, Qi [2 ]
机构：
[1] Univ Sci & Technol, Sch Chem & Biol Engn, Dept Chem, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Natl Ctr Nanosci & Technol, Ctr Excellence Nanaosci, Key Lab Standardizat & Measurement Nanotechnol, Beijing 100190, Peoples R China
来源：
MATERIALS LETTERS | 2021年 / 283卷
关键词：
Hetero-interface; Core-shell; Nanoparticles; Benzene; Sensors; GAS; SIZE;
D O I：
10.1016/j.matlet.2020.128733
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Core-shell Au@ZnO, Au-Pd@ZnO and Au-Pt@ZnO nanoparticles were synthesized, aiming at figuring out the function of Au-ZnO hetero-interfaces. Pd/Pt was decorated on Au cores which were confirmed by using various techniques. The optimal operating temperature of all synthesized core-shell NPs based sensors (300 degrees C) is much lower than ZnO NPs (400 degrees C). By comparing gas sensing properties towards ppbppm level benzene, the Au-Pd@ZnO and Au-Pt@ZnO nanoparticles had better benzene sensing property than Au@ZnO nanoparticles. The Pt/Pd decorated Au-ZnO hetero-interface had positive influence on benzene sensing performance, because decoration of Pt and Pd further enhanced electron transfer phenomenon on Au-ZnO hetero-interfaces which was advantageous on benzene sensing property. (c) 2020 Elsevier B.V. All rights reserved.
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页数：5
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