Room-temperature gas sensors based on titanium dioxide quantum dots for highly sensitive and selective H2S detection
Room-temperature gas sensors based on titanium dioxide quantum dots for highly sensitive and selective H2S detection
复制标题
基于二氧化钛量子点的室温气体传感器，用于高灵敏度和选择性 H2S 检测
DOI：
10.1016/j.apsusc.2022.152744
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发表时间：
2022-05
影响因子：
6.7
通讯作者：
Chao Zhang
中科院分区：
文献类型：
--
作者：
Kai-Di Wu;Wen-Tao Zhang;Zi-Chen Zheng;Marc Debliquy;Chao Zhang
Room-temperature gas sensors with high performance are crucial in practical application. This work prepared a series of controllable-size titanium dioxide quantum dots (TiO2QDs) via a rapid microwave-assisted solvothermal method for detecting ppb-level H2S at room temperature. The effect of reaction temperature on the nanostructure and gas sensing properties was investigated systematically. The characterization results showed the samples presented ultra-small size (around 5–6 nm) nanostructure and modified surface state (including Ti3+and oxygen defects). The S120-TiO2QDs gas sensor showed the best sensing properties towards ppb-level H2S at room temperature, including high response (25.12 @ 500 ppb H2S), rapid response/recovery, low detecting limit level, good selectivity, and operating stability. The gas sensing mechanism was explained through the synergetic effect of ultra-small size nanostructure, large specific surface area, and surface defects, which are in favor of improving the surface activity and charge transfer efficiency. Moreover, the practical application of TiO2QDs gas sensor in detecting the volatiles of fish (Pangasius) was also verified. This work developed a room temperature TiO2quantum dots-based gas sensor, which is promised for practical application because of the rapid synthesis and high performance.
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影响因子：
6.2
作者：
Galstyan, Vardan
通讯作者：
Galstyan, Vardan
过氧化物热分解制备ZnO1-x及其室温气敏性能
影响因子：
8.8
作者：
Chao Zhang;Ying Li;Gui-Fang Liu;Han-Lin Liao
通讯作者：
Han-Lin Liao
DOI：
10.1021/acsanm.0c03089
发表时间：
2021-03
期刊：
--
影响因子：
--
作者：
A. Šutka;R. Eglītis;Annija Kuzma;K. Smits;A. Zukuls;J. Prades;C. Fàbrega
通讯作者：
A. Šutka;R. Eglītis;Annija Kuzma;K. Smits;A. Zukuls;J. Prades;C. Fàbrega
影响因子：
13.6
作者：
Li, Zhijie;Huang, Yanwu;Fu, Yongqing
通讯作者：
Fu, Yongqing
影响因子：
6.7
作者：
Nagmani;Pravarthana, D.;Aswal, D. K.
通讯作者：
Aswal, D. K.