Hig-sensitivity Detection of H2S by ZnO Nanowires

ZnO纳米线高灵敏度检测H2S

• 批准号: 398819137
• 负责人: Professor Dr.-Ing. Ulrich Herr, since 6/2020
• 金额: --
• 依托单位: Abteilung für Mikro- und Nanomaterialien (MatWis)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/398819137?language=en
• 关键词: Hig; sensitivity; Detection; H2S; ZnO

Very sensitive sensors for hydrogen sulphide (H2S) can be realized based on zinc oxide (ZnO) nanowires. H2S becomes more and more important in medical diagnosis of lung and other diseases, and also in therapy. After preliminary experiments which have already shown the required sensitivity down to the 50 ppb range, we want to improve and understand the selectivity, stability and reproducibility of such sensors in this project. For this purpose, we have to look in detail into the technology for the growth of pillars, the deposition of nanoparticles on their surface for improved sensitivity, possibilities to ensure selectivity by cross-correlation of the signal of differently prepared arrays of sensors, how to settle reproducible starting conditions for the measurement process, and how to accelerate it. In a series of experiments in an ambient with different mixtures of typical gas-es present in air and also at different temperatures we want to deepen the understanding of the processes going on at and below the surface of the ZnO nanowires. The overall aim is the preparation of simple and reliable sensors for this ambitious diagnosis task.

基于氧化锌纳米线可以实现对硫化氢（H2S）非常敏感的传感器。H2S在肺部等疾病的医学诊断和治疗中越来越重要。在初步实验已经显示所需的灵敏度降至50 ppb范围后，我们希望在这个项目中改进和了解这种传感器的选择性、稳定性和可重复性。为此，我们必须详细研究柱的生长技术，纳米颗粒在其表面的沉积以提高灵敏度，通过不同制备的传感器阵列的信号相互关联来确保选择性的可能性，如何为测量过程确定可重复的起始条件，以及如何加速测量过程。在一系列的实验中，在空气中有不同的典型气体混合物，在不同的温度下，我们希望加深对氧化锌纳米线表面和表面下发生的过程的理解。总体目标是为这项雄心勃勃的诊断任务准备简单可靠的传感器。

项目成果

H2S sensing for breath analysis with Au functionalized ZnO nanowires

• DOI: 10.1088/1361-6528/abe004
• 发表时间: 2021-01
• 期刊: Nanotechnology
• 影响因子: 3.5
• 作者: Angelika Kaiser;Erick Torres Ceja;Yujia Liu;Florian Huber;R. Müller;U. Herr;K. Thonke

Medical H2S sensing with gold and platinum surface modified ZnO nanowire ChemFETs

使用金和铂表面改性 ZnO 纳米线 ChemFET 进行医用 H2S 传感

• DOI: 10.3390/iecb2020-07070
• 发表时间: 2020
• 作者: Kaiser;Thonke
• 通讯作者: Thonke