作者：孙建平¹, 胡元潮¹, 安韵竹¹, 王鹏程², 沈狄龙², 景强³

作者单位：1. 山东理工大学电气与电子工程学院，山东 淄博 255000;
2. 杭州电力设备制造有限公司，浙江 杭州 310000;
3. 山东理工大学物理与光电工程学院，山东 淄博 255000

关键词：水热法;NO₂气体传感器;PdO-ZnO材料;低检测限

摘要：

局部放电是空气开关柜一种较为常见的电气现象，会引起绝缘介质劣化，甚至导致绝缘破坏。气体组分分析法通过检测空气开关柜中放电产生NO₂的含量可以确定局部放电程度。该文采用水热法合成PdO修饰的多孔纳米ZnO材料，制作可用于检测局部放电特征气体NO₂的气体传感器。研究表明：传感器在250 ℃的最优工作温度下，对体积分数为100×10^–6 NO₂气体响应为44.06，响应时间为24 s，恢复时间为29 s，检测下限为0.1×10^–6，且灵敏度与NO₂浓度呈现良好的线性关系，可为气体组分分析法检测局部放电提供参考。

Synthesis and gas sensitivity analysis of NO₂ sensing materials
SUN Jianping¹, HU Yuanchao¹, AN Yunzhu¹, WANG Pengcheng², SHEN Dilong², JING Qiang³
1. Electrical and Electronic Engineering College, Shandong University of Technology, Zibo 255000, China;
2. Hangzhou Electric Power Equipment Manufacturing Co., Ltd., Hangzhou 310000, China;
3. School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China
Abstract: Partial discharge is a common electrical phenomenon in air switchgear, which can cause the deterioration of insulation media and even lead to insulation damage. Gas component analysis method can determine the degree of partial discharge by detecting the content of NO₂ in the air switch cabinet. In this paper, PdO-decorated porous nano-ZnO materials were synthesized by hydrothermal method to make a gas sensor which can be used to detect partial discharge characteristic gas NO₂. The results show that the sensor has a sensitivity of 44.06 to 100×10^–6 NO₂ gas, with a response time of 24 s, a recovery time of 29 s, a limit detection of 0.1×10^–6, and a good linear relationship between sensitivity and NO₂ concentration, which can provide reference for gas component analysis to detect partial discharge in air switchgear.
Keywords: hydrothermal method;NO₂ gas sensor;PdO-ZnO nanomaterial;low detection limits
2024, 50(3):69-74  收稿日期: 2021-12-08;收到修改稿日期: 2022-03-25
基金项目: 南方电网公司基金项目（CSGULAEMEST-2021-KF-05）；山东省自然科学基金资助(ZR2021ME092)
作者简介: 孙建平(1996-),男,山东潍坊市人,硕士研究生,专业方向为新材料及其应用技术。
参考文献
[1] 周磊. 开关柜故障特征气体组分分析研究[D]. 重庆：重庆大学, 2016.
ZHOU L. The analysis and research of switchgear characteristic gas composition[D]. Chongqing: Chongqing University, 2016.
[2] 林福海, 颜湘莲, 稂业员, 等. 基于SF₆酸性分解物与特高频结合的GIS绝缘故障诊断[J]. 绝缘材料, 2020, 53(9): 101-106.
LIN F H, YAN X L, LANG Y Y, et al. Combination of SF₆ acidic decomposition products and UHF to diagnose GIS insulation fault[J]. Insulating Materials, 2020, 53(9):101-106.
[3] 宴年平, 于钦学, 曹淳枫, 等. SF₆电力设备局部放电与分解气体组分关系的研究进展[J]. 绝缘材料, 2013, 46(5): 1-3+8.
YAN N P, YU Q X , CAO C F, et al. Research progress of relationship between partial discharge and decomposition gas component in SF6 electrical equipment[J]. Insulating Materials, 2013, 46(5):1-3+8.
[4] 张龙喜, 张忠良, 靳捷. 基于理论计算的筛选过滤吸收器漏毒检测示踪气体研究[J]. 中国测试, 2021, 47(3): 24-29.
ZHANG L X, ZHANG Z L, JIN J. Research on tracer gas based on theoretical calculation for screening filter absorber leakage[J]. China Measurement & Test, 2021, 47(3):24-29.
[5] 胡伟涛, 白彦坤, 祝晓辉, 等. 高频局部放电检测技术在变压器内部缺陷的分析[J]. 中国测试, 2017(43): 37-41.
HU W T，BAI Y K，ZHU X H, et al. Analysis on transformer internal discharge defects based on high frequency partial discharge detection technology[J]. China Measurement & Test, 2017(43):37-41.
[6] 李金成, 陈芸, 赖向东, 等. 氧化铈在生物分析与传感检测中的应用研究进展[J]. 分析测试学报, 2022,41(9): 1375-1386.
LI J C, CHEN Y, LAI X D, et al. Research progress on bioanalytical and sensing applications of cerium oxide[J]. Journal of Instrumental Analysis, 2022,41(9): 1375-1386.
[7] LEE K S, SHIM J, LEE J S, et al. Adsorption behavior of NO₂ molecules in ZnO-mono/multilayer graphene core–shell quantum dots for NO₂ gas sensor[J]. Journal of Industrial and Engineering Chemistry, 2021, 106: 279-286
[8] SADEK A Z, CHOOPUN S, WLODARSKI W, et al. Characterization of ZnO nanobelt-based gas sensor for H₂, NO₂, and hydrocarbon sensing[J]. Sensors Journal IEEE, 2007, 7(6): 919-924
[9] 杨永超, 刘洋, 王大兴, 等. 基于HTCC敏感芯体SnO₂薄膜NO₂传感器[J]. 传感器与微系统, 2021, 40(4): 89-95.
YANG Y C, LIU Y, WANG D X, et al. SnO₂ thin film NO₂ gas sensor based on HTCC sensitive core[J]. Transducer and Microsystem Technologies, 2021, 40(4):85-95.
[10] KIRUBA M S, JOSE A S, PRAJWAL K, et al. Sputter deposited p-NiO/n-SnO₂ porous thin film hetero- junction based NO₂ sensor with high selectivity and fast response[J]. Sensors & Actuators:B Chemical, 2020, 310: 127830
[11] 刘超峰, 胡行方, 祖庸. 以尿素为沉淀剂制备纳米氧化锌粉体[J]. 无机材料学报, 1999, 14(3): 391-396.
LIU C F, HU X F, ZU Y. Nanometer-sized zinc oxide prepared by using urea as precipitating agent[J]. Chinese Journal of Inorganic Chemistry, 1999, 14(3):391-396.
[12] QIANG J, WU Y F, LONG W C, et al. Synthesis of snowflake-like multi-layered ZnO with controllable pore sizes and its photocatalytic property[J]. Applied Surface Science, 2012: 3604-3610.
[13] 魏伟. 贵金属掺杂和表面修饰对氧化物半导体气敏性能影响的研究[D]. 长春：吉林大学, 2017.
WEI W. Research on the effects of noble metal surface-decorating and doping on gas sensing properties of oxide semiconductor[D]. Changchun: Jilin University, 2017.
[14] CAI L B, DONG X Q, WU G G, et al. Ultrasensitive acetone gas sensor can distinguish the diabetic state of people and its high performance analysis by first-principles calculation[J]. Sensors and Actuators B:Chemical, 2022, 351: 130863
[15] WAGHMES S D, RAUT S D, GHULE B G, et al. Pristine and palladium-doped perovskite bismuth ferrites and their nitrogen dioxide gas sensor studies[J]. Journal of King Saud University - Science, 2020, 32(7): 3125-3130
[16] YANG X L, GAO H Y, ZHAO L P, et al. Enhanced gas sensing properties of monodisperse Zn₂SnO₄ octahedron functionalized by PdO nanoparticals[J]. Sensors & Actuators B Chemical, 2018, 266: 302-310