Hollow ZnO@SnO2-Pt Core-Shell Nanofibers for Ethanol Sensing

被引：8

作者：

Song, Xiaoyan ^{[1
]}

Zhao, Fangzheng ^{[1
]}

Wang, Zhipeng ^{[2
]}

Ge, Runbin ^{[1
]}

Xing, Jinfeng ^{[3
]}

机构：

[1] Tiangong Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China

[2] Tianjin Inst Metrol Supervis Testing, Tianjin 300192, Peoples R China

[3] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2022年 / 5卷 / 05期

基金：

中国国家自然科学基金;

关键词：

tin oxide (SnO2); Pt; coaxial electrospinning; gas sensor; ethanol; METAL-OXIDE NANOSTRUCTURES; DIFFERENT WORK FUNCTION; GAS SENSOR; LOW-TEMPERATURE; HETEROSTRUCTURE NANOFIBERS; IN2O3; NANOFIBERS; PERFORMANCE; FABRICATION; NANOWIRES; NANOCRYSTALS;

D O I：

10.1021/acsanm.2c00686

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, ZnO@SnO2-Pt core-shell nanofibers with a hollow structure have been prepared by coaxial electrospinning and heat treatment. The core-shell and hollow structures of nanofibers were confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The Brunauer-Emmett-Teller (BET) specific surface area test shows that the specific surface area of ZnO@ SnO2-Pt core-shell nanofibers is larger than those of ZnO@SnO2 coreshell nanofibers and SnO2 nanofibers. The gas-sensing test result shows that the response to 100 ppm ethanol gas is 132.04 and the response time is 5 s at 200 degrees C for ZnO@SnO2-Pt core-shell nanofibers with 0.3 wt % Pt. Compared with those of ZnO@SnO2 core-shell nanofibers without Pt and pure SnO2 nanofibers, the optimum working temperature of ZnO@ SnO2-Pt core-shell nanofibers is reduced by 125 degrees C and the maximum response is increased by 70.9 and 367.7%. Furthermore, the gas-sensing mechanism is discussed in detail.

引用

页码：6637 / 6649

页数：13

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