化学喷涂原始和Cd2+结合Co2SnO4薄膜为低ppm水平的增强化学电阻行为向室温二甲基胺检测
Santhosh Nallakumar1, Usha Rani Muthurakku1
1Department of Physics, School of Advanced Sciences, VIT, Vellore 632014, India.
Journal of hazardous materials
|March 24, 2024
概括
嵌入的锡氧化物 (Cd 2+ 嵌入 Co 2 SnO 4) 薄膜在室温下显著提高了检测二甲基胺 (DMA) 气体的灵敏度. 这种进步为增强的气体传感器提供了潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 不断增长的工业排放需要先进的气体传感器来检测挥发性有机化合物 (VOC).
- 由于其独特的特性和大表面积,三元金属氧化物旋转器对化学电阻气体传感器具有前景.
研究的目的:
- 为了研究原始和Cd2+的气体传感特性,在室温下加入了Co2SnO4薄膜.
- 评估Cd2+结合对基于Co2SnO4的气体传感器的灵敏度,选择性和稳定性的影响.
主要方法:
- 原始的化学喷雾沉积和5%Cd2+合Co2SnO薄膜的化学喷雾沉积.
- 在室温 (300 K) 工作的抗化学性气体传感器的制造和表征.
- 测试传感器性能,包括对二甲基胺 (DMA) 的反应,恢复,选择性,可重复性和长期稳定性.
主要成果:
- 5%重量的Cd2+含有Co2SnO4的膜呈现出高传感器响应 (S=6153在1ppm DMA),比原始膜提高了8.89倍.
- 增强的传感性能归因于增加的反应表面积和氧气空缺.
- 传感器表现出优异的选择性,良好的响应/恢复时间 (154秒/90秒),优异的长期稳定性,可重复性和耐湿性.
结论:
- 加入Cd2+显著提高了Co2和SnO薄膜用于DMA检测的室温气体传感性能.
- 开发的材料显示出在实时危险气体监测系统中的实际应用的巨大潜力.
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