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Facile Fabrication of Lilac-Like Multiple Self-Supporting WO3 Nanoneedle Arrays with Cubic/Hexagonal Phase Junctions for Highly Sensitive Ethylene Glycol Gas Sensors
ACS Sensors ( IF 8.2 ) Pub Date : 2024-07-17 , DOI: 10.1021/acssensors.4c00600 Xiaohan Qu 1 , Mingchun Li 1 , Hanlin Mu 1 , Bingbing Jin 1 , Minggao Song 1 , Kunlong Zhang 1 , Yusheng Wu 1 , Laishi Li 1 , Yan Yu 1
ACS Sensors ( IF 8.2 ) Pub Date : 2024-07-17 , DOI: 10.1021/acssensors.4c00600 Xiaohan Qu 1 , Mingchun Li 1 , Hanlin Mu 1 , Bingbing Jin 1 , Minggao Song 1 , Kunlong Zhang 1 , Yusheng Wu 1 , Laishi Li 1 , Yan Yu 1
Affiliation
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Metal oxides with nanoarray structures have been demonstrated to be prospective materials for the design of gas sensors with high sensitivity. In this work, the WO3 nanoneedle array structures were synthesized by a one-step hydrothermal method and subsequent calcination. It was demonstrated that the calcination of the sample at 400 °C facilitated the construction of lilac-like multiple self-supporting WO3 arrays, with appropriate c/h-WO3 heterophase junction and highly oriented nanoneedles. Sensors with this structure exhibited the highest sensitivity (2305) to 100 ppm ethylene glycol at 160 °C and outstanding selectivity. The enhanced ethylene glycol gas sensing can be attributed to the abundant transport channels and active sites provided by this unique structure. In addition, the more oxygen adsorption caused by the heterophase junction and the aggregation of reaction medium induced by tip effect are both in favor of the improvement on the gas sensing performance.
中文翻译：
轻松制造具有立方/六方相结的紫丁香状多重自支撑 WO3 纳米针阵列，用于高灵敏度乙二醇气体传感器
具有纳米阵列结构的金属氧化物已被证明是用于设计高灵敏度气体传感器的前景材料。在这项工作中，WO 3纳米针阵列结构是通过一步水热法和随后的煅烧合成的。结果表明，在 400 °C 下煅烧样品有利于构建具有适当 c/h-WO 3异相连接和高度定向纳米针的紫丁香状多重自支撑 WO 3阵列。具有这种结构的传感器在 160 °C 下对 100 ppm 乙二醇表现出最高的灵敏度 (2305) 和出色的选择性。增强的乙二醇气体传感可归因于这种独特结构提供的丰富的传输通道和活性位点。此外，异相结引起的更多的氧气吸附和尖端效应引起的反应介质聚集都有利于气敏性能的提高。
更新日期：2024-07-17
中文翻译：
轻松制造具有立方/六方相结的紫丁香状多重自支撑 WO3 纳米针阵列，用于高灵敏度乙二醇气体传感器
具有纳米阵列结构的金属氧化物已被证明是用于设计高灵敏度气体传感器的前景材料。在这项工作中，WO 3纳米针阵列结构是通过一步水热法和随后的煅烧合成的。结果表明，在 400 °C 下煅烧样品有利于构建具有适当 c/h-WO 3异相连接和高度定向纳米针的紫丁香状多重自支撑 WO 3阵列。具有这种结构的传感器在 160 °C 下对 100 ppm 乙二醇表现出最高的灵敏度 (2305) 和出色的选择性。增强的乙二醇气体传感可归因于这种独特结构提供的丰富的传输通道和活性位点。此外，异相结引起的更多的氧气吸附和尖端效应引起的反应介质聚集都有利于气敏性能的提高。
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