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检测PPB-级H2S度在呼气中使用Au纳米板传感器,具有小变量,高选择性和长期稳定性

Taro Kato¹, Takahisa Tanaka¹, Ken Uchida¹

¹Department of Materials Engineering, The University of Tokyo, Tokyo 113-8656, Japan.

|February 9, 2024

概括

新的金纳米板传感器检测到低水平的硫化 (H2S) 在呼吸健康监测. 优化的制造确保了高选择性和ppb级检测,超过了人类鼻子的敏感性,用于早期疾病诊断.

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:

持续监测出口气中的硫化 (H2S) 对于诊断口臭和胃肠道问题等疾病至关重要.
现有的H2S传感器缺乏必要的选择性,低检测极限 (每十亿个零件) 和易于制造的有效呼吸分析.

研究的目的:

开发具有 ppb级别检测能力的高度选择性和敏感的金 (Au) 纳米板H2S传感器.
为了优化制造工艺,统一的AU纳米板传感器适合集成到便携式健康监测设备.

主要方法:

使用化 (TiN) 粘附层以防止聚合,优化制造Au纳米板.
使用N2化来增强Au纳米片的结晶性.
在受控环境和模拟呼气中检测H2S的测试传感器性能.

主要成果:

实现H2S检测低至5.6ppb,估计检测极限为0.5ppb,明显低于人类鼻子的能力 (8-13ppb).
对干扰气体 (如H2,酒精和湿度) 具有很高的选择性.
在模拟患者呼吸样本中检测到H2S,其度降至175ppb.

结论:

优化的Au纳米板制造产生具有高均性,选择性和ppb级H2S检测的传感器.
开发的传感器超过了人类嗅觉检测H2S的极限.
这些统一的Au纳米板传感器有望集成到移动设备中,用于非侵入性呼吸分析和健康检查.

关键词:

呼吸分析呼吸分析气体传感器是一个气体传感器.黄金纳米板是一种金纳米板.硫化是硫化的一种物质.在PPB级别检测检测.

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