Enhanced acetone sensing performance of the ZnFe2O4/SnO2 nanocomposite

被引：12

作者：

Ni, Qing ^{[1
]}

Sun, Li ^{[1
]}

Cao, Ensi ^{[1
]}

Hao, Wentao ^{[1
]}

Zhang, Yongjia ^{[1
]}

Ju, Lin ^{[2
]}

机构：

[1] Taiyuan Univ Technol, Coll Phys & Optoelect, Taiyuan 030024, Shanxi, Peoples R China

[2] Anyang Normal Univ, Coll Phys & Elect Engn, Anyang 455000, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2019年 / 125卷 / 11期

基金：

中国国家自然科学基金;

关键词：

GAS SENSOR; PARTICLE-SIZE; NANOSTRUCTURES; NANOPARTICLES; NANOFIBERS; COMPOSITE; SHELL; HETEROSTRUCTURE; SNO2;

D O I：

10.1007/s00339-019-3102-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ZnFe2O4/SnO2 semiconductor nanocomposites with various mole ratios were prepared by a simple chemical synthesis process that based on sol-gel method. The structural properties were determined by X-ray diffraction and scanning electron microscope technique. The XRD study reveals that no impurity phase, such as ZnO, Fe2O3, existed in all the samples. The average grain size was found to be about 39.51 nm when the mole ratio of ZnFe2O4/SnO2 is 2:1 (Z2S1), which is benefit for improving gas sensing property. The Z2S1 sample showed a relatively higher response (11.46) at a lower working temperature (176 degrees C) to acetone compared with other composites, and the response/recovery time were both very short. The improving gas sensing properties may be due to the fine grain and the formation of the ZnFe2O4/SnO2 heterojunction structure.

引用

页数：8

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