Improved ethanol gas-sensing properties of optimum Fe-ZnO mesoporous nanoparticles

被引：6

作者：

Shen, Yue ^{[1
]}

Li, Qinyi ^{[1
]}

Li, Tai ^{[1
]}

Cao, Meng ^{[1
]}

Gu, Feng ^{[1
]}

Wang, Linjun ^{[1
]}

Zhu, Da-Ming ^{[2
]}

机构：

[1] Shanghai Univ, Sch Materials Sci, Engn, Shanghai, Shanghai, Peoples R China

[2] Univ Missouri, Dept Phys, Astronomy, Kansas City, MO 64110 USA

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2020年 / 31卷 / 04期

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE; FABRICATION; FILMS; NANOSTRUCTURES; NANOSHEETS; NANOWIRES; MECHANISM; NANORODS; SN;

D O I：

10.1007/s10854-019-02852-2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Fe-doped ZnO (Fe-ZnO) mesoporous nanoparticles have been synthesized via a facile hydrothermal method, which utilizes pluronic triblock copolymer polyethylene glycol-polypropylene glycol-polyethylene glycol (PEO-PPO-PEO) as the pore-forming agent. Fe-ZnO composites have an unique porous structure. Their pore sizes increase with Fe-doping concentration and reach a maximum as Fe concentration is 15 at.%; the specific surface area of synthesized mesoporous Fe-ZnO nanoparticles reaches a maximum as the Fe concentration is about 11 at.%. Electron microscopy, vapor pressure isotherm measurements and photoluminescence (PL) were used to characterize synthesized Fe-ZnO composites. Fe-ZnO-based gas sensors exhibit excellent response in detecting ethanol; the sensing response of Fe(11 at.%)-ZnO reaches 319.8, which is significantly higher than most of the ZnO-based gaseous sensors. The improved sensitivity is ascribed to the increase of oxygen-related defects and specific surface area of Fe-ZnO composites.

引用

页码：3074 / 3083

页数：10

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