纳米氧化锌气敏传感器应用于变压器油中溶解微量氢气检测

Nano Zno Gas Sensitive Material Used to Detect Trace Hydrogen in Transformer Oil

通过水热法合成的方式制备氧化锌气敏材料,采用柠檬酸三钠作为反应添加剂进行材料微观形貌上的调控,基于实验室微量气体平台检测和分析不同形态氧化锌气敏材料对氢气的检测特性和气敏机理。结果表明多孔隙氧化锌气敏材料对氢气的最佳工作温度出现在350℃,同时对低浓度氢气有良好的响应值和较快的响应恢复时间。研究成果对制备高精确度氢气气体传感器,进而实现变压器状态的准确评估研究具有重要意义。

Zinc oxide gas-sensitive materials were prepared by hydrothermal synthesis,and trisodium citrate was used as a reaction additive to regulate the micromorphology of the materials.Based on the laboratory trace gas platform,the detection characteristics and gas sensing mechanism of different forms of zinc oxide gas-sensitive materials on hydrogen were detected and analyzed.The results show that the optimal working temperature of porous zinc oxide gas sensitive materials for hydrogen is 350°C,and they have good response values and fast response recovery time for low concentrations of hydrogen.The research results are of great significance for the preparation of high-precision hydrogen gas sensors to achieve accurate evaluation of transformer status.