Study on gas sensitivity improvement of La0.8Ba0.2FeO3 nano-materials by 
oxygen-enriched pressure-holding technique

HAO Weidong; SU Xiaohong; TIAN Yuan; ZHANG Yongjia

Chinese

您当前的位置：

首页 >

文章列表页 >

Study on gas sensitivity improvement of La_0.8Ba_0.2FeO₃ nano-materials by oxygen-enriched pressure-holding technique

Research & Approach | 更新时间：2026-05-18

- Study on gas sensitivity improvement of La_0.8Ba_0.2FeO₃ nano-materials by oxygen-enriched pressure-holding technique
- Vol. 45, Issue 5, Pages: 43-47(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：
移动端阅览
HAO Weidong, SU Xiaohong, TIAN Yuan, et al. Study on gas sensitivity improvement of La_0.8Ba_0.2FeO₃ nano-materials by oxygen-enriched pressure-holding technique[J]. 2026, 45(5): 43-47.
DOI：

HAO Weidong, SU Xiaohong, TIAN Yuan, et al. Study on gas sensitivity improvement of La_0.8Ba_0.2FeO₃ nano-materials by oxygen-enriched pressure-holding technique[J]. 2026, 45(5): 43-47. DOI：

摘要

采用溶胶—凝胶法制备La

0.8

0.2

FeO

（LBFO）纳米粉体，随后在200℃的烧结温度下，分别置于空气及真空中烧结，结合富氧保压处理，制成三种LBFO气敏器件。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)技术对其进行了晶相、微观形貌和成分的表征，同时测试这三种气敏器件对二氧化碳（CO

）气体的气敏特性。结果表明:富氧保压后的LBFO器件在70℃最佳工作温度下对500×10

-6

气体的响应可达1.35，响应恢复时间缩短至13s。这是由于真空退火大幅增加了材料表面氧空位数量，从而在富氧环境中，材料表面吸附氧比例得到显著提升，进而优化了LBFO的气敏性能。本文研究可为低成本、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

0.8

0.2

FeO

(LBFO)nanopowders are prepared by the sol-gel method.Then the powders are sintered in air and vacuum at temperature of 200℃

respectively

and combined with an oxygen-enriched pressure-holding treatment to fabricate three kinds of LBFO gas-sensing devices.The crystalline phase

micromorphology and composition of the devices are characterized by X-ray diffraction(XRD)

scanning electron microscopy

(SEM) and X-ray photoelectron spectrosscopy(XPS)

and the gas-sensing characteristics of these three gas-sensing devices to carbon dioxide(CO

) gas are tested.The results show that the response of the LBFO device after the oxygen-enriched pressure-holding to 500×10

-6

gas reaches 1.35 at the optimal operating temperature of 70℃

and the response-recovery time is shortened to 13s.This is because vacuum annealing greatly increases the number of oxygen vacancies on the surface of the material

which significantly increases the proportion of adsorbed oxygen on the surface of material in an oxygen-enriched environment

thereby optimizing the gas-sensing performance of LBFO.This study provides a reference for the fabrication and application of low-cost

simple-process

and high-performance resistive gas sensors.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

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

Effect of fractal structure on sensitivity of SnO2 gas sensor

Preparation of Cr2O3/ZnO and gas-sensing properties of ammonia at normal temperature

Ammonia sensor based on flower-like h-MoO3 nanorods@graphene

Research on gas sensor based on photochemically deposited porous WO3 films

Related Author

ZHANG Chenchen

WANG Ruixue

HU Shunren

JIANG Anyan

ZUO Jing

PI Ziqi

YANG Lujia

ZHANG Tengfei

Related Institution

WANG Ruixue, HU Shunren, JIANG Anyan, ZUO Jing, PI Ziqi, YANG Lujia

School of Electronic Information and Optical Engineering,Taiyuan University of Technology

School of Mechanical and Automation Engineering,Wuyi University

College of Ocean Science and Engineering,Shanghai Maritime University

College of Logistic Engineering,Shanghai Maritime University

⁰