Improvement of gas sensitivity to ethanol by hydrothermal preparation of Dy-doped In2O3

被引：18

作者：

Yang, Zhiguo ^{[1
]}

Zhang, Zhenkai ^{[1
]}

Mu, Yang ^{[1
]}

Yue, Chen ^{[1
]}

Liu, Zhenyue ^{[1
]}

Dastan, Davoud ^{[2
]}

Yin, Xi-Tao ^{[1
]}

Ma, Xiaoguang ^{[1
]}

机构：

[1] Ludong Univ, Sch Phys & Optoelect Engn, Yantai 264000, Peoples R China

[2] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14850 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2024年 / 405卷

基金：

中国国家自然科学基金;

关键词：

Dy-doped; Adsorbed oxygen; Ethanol; Gas sensor; SENSING PROPERTIES; SENSOR; SNO2;

D O I：

10.1016/j.snb.2024.135386

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, Dy-doped In2O3 nanomaterials were prepared by hydrothermal method. The crystal structure, elemental composition and morphology were characterized by various characterization methods. The gassensitive properties of the materials were tested for different Dy/In molar ratios. The test results show that the response of 5 mol% Dy-doped In2O3 to 100 ppm ethanol at 250 celcius reaches 85, which is about 3.8 times higher than that of pure In2O3, with a response time of about 5 s. In addition, Dy doping enhances the selectivity to ethanol, with good reproducibility and stability. The reason for the enhancement of gas-sensitive properties of In2O3 by Dy doping is mainly the creation of structural defects, which increase the amount of adsorbed oxygen on the surface of the material, enabling it to react with more ethanol molecules.

引用

页数：10

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