SnO2微结构的水热可控制备及其氢气气敏特性研究
王璇 , 张海 , 牛曙 , 陈青松 , 李国栋 , 吴启瑞
现代化工 ›› 2026, Vol. 46 ›› Issue (6) : 189 -195.
SnO2微结构的水热可控制备及其氢气气敏特性研究
Hydrothermal controllable preparation of SnO2 microstructure and its hydrogen gas sensing properties
电力变压器油中溶解气体的在线监测对于早期故障诊断至关重要。合成了不同水热时间下的SnO2纳米材料,适中的水热时间(24 h)可获得结晶度高、形貌规整的纳米立方体结构,同时显著提升了氧空位比例(71.91%)并优化了介孔结构。气敏测试结果显示,在200℃最佳工作温度下,优化后的SnO2传感器对8.18×10-7 mol/L H2的响应值高达28.1,响应/恢复时间分别为82.3 s/87.9 s,并展现出优异的线性依赖关系(R2=0.996 3)及长期稳定性(30 d衰减<5%)。
The online detection of dissolved gases in power transformer oil is crucial for early fault diagnosis.SnO2 nanomaterials under different hydrothermal times using the “hydrothermal calcination method” were successfully synthesized,a moderate hydrothermal time (24 h) can obtain high crystallinity and regular morphology nano cubic structures,while significantly increasing the oxygen vacancy ratio (71.91%) and optimizing the mesoporous structure.The gas sensing test results showed that at the optimal operating temperature of 200℃,the optimized SnO2 sensor had a response value of up to 28.1 to 8.18 × 10-7 mol/L H2,with response/recovery times of 82.3 s/87.9 s,and exhibited excellent linear dependence (R2=0.996 3) and long-term stability (30 days decay<5%).
二氧化锡(SnO2) / 传感器 / 水热合成 / 溶解气体氢气 / 气敏性能
tin dioxide (SnO2) / sensors / hydrothermal synthesis / dissolved hydrogen / gas sensitivity
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
国家电网有限公司科技项目(5500-202415130A-1-1-ZN)
/
| 〈 |
|
〉 |