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Updated: Sep 12, 2025

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温度脉冲驱动的硫化和脱硫CuO的增强的H2S量化

Amit Kumar¹, Bharath Somalapura Prakasha^1,2, Mahesh Kumar¹

¹Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342030, India.

|August 7, 2025

概括

这项研究引入了一种脉冲调制的传感器,用于检测硫化 (H2S) 气体. 该技术通过在冷却周期期间再生氧化铜 (CuO) 材料来提高传感器的稳定性和可逆性.

科学领域:

材料科学材料科学材料科学
化学传感器化学传感器
纳米技术纳米技术

背景情况:

基于氧化铜 (CuO) 薄膜的化学阻抗传感器在适度温度下接触硫化 (H2S) 时面临不可逆转相变的挑战.
这些转换将CuO转化为硫化铜 (CuS/Cu2S),导致传感器输出不稳定,失去传感能力.

研究的目的:

开发一种节能且高度选择性的H2S气体传感平台.
为了克服基于CuO的传感器中不可逆转的相变的局限性.
为了提高H2S气体传感器的长期稳定性和可逆性.

主要方法:

使用纳米石结构的CuO薄膜来制造传感器.
实施动态脉冲调制技术以循环控制传感温度 (在200°C时开/关).
分析脉冲调制对材料再生,气体扩散,表面活性和电荷传输的影响.

主要成果:

脉冲调制使CuO从CuS/Cu2S在不需要外部热处理的情况下能够在现场再生,通过在冷却周期期间增强硫吸附和表面氧气重新激活.
纳米石形态和柱状颗粒结构促进了气体的快速扩散,增加了表面反应性,并改善了电荷传输.
脉冲调制传感器显示反应和恢复时间减少,长期稳定性提高,材料可逆性提高,即使在高H2S度下也是如此.

结论:

动态脉冲调制是一种有效的策略,以确保基于CuO的H2S气体传感器的稳定性和可逆性.
CuO薄膜的独特纳米石形态在传感器的性能中起着至关重要的作用.
这种方法为各种应用中可靠和高效的H2S气体检测提供了有希望的解决方案.

关键词:

这是一个H2S传感器.脱硫处理是一种脱硫方法.金属氧化物金属氧化物纳米石的形态学脉冲调制的脉冲调制方法硫化过程中的硫化.

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