Research on effect of sintering atmosphere on gas sensitivity of SnO<sub>2</sub> nanomaterials

ZHANG Yongjia; HAO Weidong; ZHANG Chenchen; TIAN Yuan

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Research on effect of sintering atmosphere on gas sensitivity of SnO₂ nanomaterials

Research & Approach | 更新时间：2026-04-17

- Research on effect of sintering atmosphere on gas sensitivity of SnO₂ nanomaterials
- Vol. 45, Issue 4, Pages: 40-44(2026)
- 作者机构：
  
  太原理工大学物理学院,山西,太原,030024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP212;O469
- Published：2026
- 稿件说明：
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ZHANG Yongjia, HAO Weidong, ZHANG Chenchen, et al. Research on effect of sintering atmosphere on gas sensitivity of SnO₂ nanomaterials[J]. 2026, 45(4): 40-44.
DOI：

ZHANG Yongjia, HAO Weidong, ZHANG Chenchen, et al. Research on effect of sintering atmosphere on gas sensitivity of SnO₂ nanomaterials[J]. 2026, 45(4): 40-44. DOI：

摘要

采用溶胶凝胶法合成SnO

纳米粉体，并将其分别放置在空气、真空和富氧三种气氛中进行烧结，制备出三种不同的SnO

气敏元件。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱仪(XPS)对其进行了晶相、微观形貌和成分的表征，同时测试这三种气敏元件对乙醇气体的气敏特性。结果表明，在200℃的真空烧结处理下，SnO

气敏元件在最佳工作温度下对乙醇气体的气体响应可达26.01，响应恢复时间缩短至20s，并对乙醇气体具有良好的选择性。这是由于真空退火减小了粉体的晶粒尺寸，大幅提高了材料表面氧空位数量，进而表面吸附氧比例升高，提升SnO

纳米材料的气敏性能。本文可为低成本、简工艺、高性能电阻型气体传感器的制备及应用提供参考。

Abstract

SnO

nanopowders are synthesized by the sol-gel method and sintered in three atmospheres of air

vacuum and oxygen-rich

respectively

to prepare three different SnO

gas sensors.The crystalline phase

micromorphology and composition are characterized by X-ray diffractometer(XRD)

scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).The gas-sensing characteristics of the three sensors to ethanol gas are tested simultaneously.The results show that for the sensor sintered under vacuum at 200℃

the gas response of SnO

sensor to ethanol gas at the optimal operating temperature can reach 26.01

with the response-recovery time shortened to 20s

and it presents good selectivity to ethanol gas.This is because vacuum annealing reduces the grain size of the powder

significantly increases the number of oxygen vacancies on the surface of the material

and further increases the proportion of adsorbed oxygen on the surface

which improves the gas-sensing performance of SnO

nanomaterials.This study can provide a reference for the preparation and application of low-cost

simple-process and high-performance resistive gas sensors.

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Research on effect of sintering atmosphere on gas sensitivity of SnO2 nanomaterials

DOI：

摘要

Abstract

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Research on effect of sintering atmosphere on gas sensitivity of SnO₂ nanomaterials