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Uniform Nanocrystal Spatial Distribution-Enhanced SnO2-based Sensor for High-Sensitivity Hydrogen Detection
ACS Sensors ( IF 8.2 ) Pub Date : 2024-08-31 , DOI: 10.1021/acssensors.4c01424 Mingxue Zhang 1 , Jihao Bai 2 , Chengming Sui 1 , Yilin Wang 1 , Ziqi Liu 1 , Tianrun Zheng 1 , Fengmin Liu 1 , Xishuang Liang 1 , Geyu Lu 1
ACS Sensors ( IF 8.2 ) Pub Date : 2024-08-31 , DOI: 10.1021/acssensors.4c01424 Mingxue Zhang 1 , Jihao Bai 2 , Chengming Sui 1 , Yilin Wang 1 , Ziqi Liu 1 , Tianrun Zheng 1 , Fengmin Liu 1 , Xishuang Liang 1 , Geyu Lu 1
Affiliation
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Hydrogen (H2) is colorless, odorless, and has a wide explosive concentration range (4–75 vol %), making rapid and accurate detection of hydrogen leaks essential. This paper demonstrates a method to modify the spatial distribution of nanocrystals (NCs) by adding surfactants to improve the sensing performance. In order to explore its potential for H2 gas-sensing applications, SnO2, containing different mass percentages of PdCu NCs, was dispersed. The results show that the 0.1 wt % PdCu-SnO2 sensor based on surfactant dispersion performs well, with a response to 0.1 vol % H2 that is 18 times higher than that of the undispersed 0.1 wt % PdCu-SnO2 sensor. The enhanced gas-sensing ability after dispersion can be attributed to the fact that the uniform distribution of NCs generates higher quantum efficiency and exposes more active sites on the carrier surface compared to nonuniform distribution. This study provides a simple, novel, and effective method to improve the sensor response.
中文翻译：
用于高灵敏度氢气检测的均匀纳米晶体空间分布增强型 SnO2 传感器
氢气 (H 2 ) 无色、无味，具有较宽的爆炸浓度范围 (4–75 vol%)，因此快速准确地检测氢气泄漏至关重要。本文演示了一种通过添加表面活性剂来改变纳米晶体（NC）空间分布以提高传感性能的方法。为了探索其在H 2气敏应用中的潜力，分散了含有不同质量百分比的PdCu NCs的SnO 2 。结果表明，基于表面活性剂分散体的0.1 wt% PdCu-SnO 2传感器表现良好，对0.1 vol% H 2的响应比未分散的0.1 wt% PdCu-SnO 2传感器高18倍。分散后增强的气敏能力可归因于与非均匀分布相比，NC的均匀分布产生更高的量子效率并在载体表面上暴露出更多的活性位点。本研究提供了一种简单、新颖且有效的方法来提高传感器响应。
更新日期：2024-08-31
中文翻译：
用于高灵敏度氢气检测的均匀纳米晶体空间分布增强型 SnO2 传感器
氢气 (H 2 ) 无色、无味，具有较宽的爆炸浓度范围 (4–75 vol%)，因此快速准确地检测氢气泄漏至关重要。本文演示了一种通过添加表面活性剂来改变纳米晶体（NC）空间分布以提高传感性能的方法。为了探索其在H 2气敏应用中的潜力，分散了含有不同质量百分比的PdCu NCs的SnO 2 。结果表明，基于表面活性剂分散体的0.1 wt% PdCu-SnO 2传感器表现良好，对0.1 vol% H 2的响应比未分散的0.1 wt% PdCu-SnO 2传感器高18倍。分散后增强的气敏能力可归因于与非均匀分布相比，NC的均匀分布产生更高的量子效率并在载体表面上暴露出更多的活性位点。本研究提供了一种简单、新颖且有效的方法来提高传感器响应。
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