介孔材料
异质结
纳米复合材料
二氧化氮
材料科学
化学工程
分子
选择性
多孔性
纳米技术
光电子学
化学
催化作用
复合材料
有机化学
工程类
作者
P. Bharathi,S. Harish,M. Shimomura,M. Krishna Mohan,J. Archana,M. Navaneethan
出处
期刊:Chemosphere
[Elsevier]
日期:2023-10-22
卷期号:346: 140486-140486
被引量:11
标识
DOI:10.1016/j.chemosphere.2023.140486
摘要
Nitrogen dioxide (NO2) is one of the toxic gases produced by chemical industries, power plants, and vehicles. In this work, we demonstrate an inexpensive sensing platform for NO2 detection at room temperature (RT-32 °C) based on a charge transfer mechanism. Three-dimensional hierarchical SnS2 and SnS2/mesoporous TiO2 nanocomposites were synthesized via the solvothermal method. SnS2/20 wt% mesoporous TiO2 nanocomposites sample showed 245.4% enhanced response compared to pristine SnS2. The fabricated device exhibits excellent selectivity among all other interfering gases with one-month stability. The rapid response and enhanced response achieved were obtained for the minimum concentration of 2 ppm NO2. The formation of heterojunction between SnS2 and mesoporous TiO2 has a synergetic effect, providing more active sites and porous structures for the detection of NO2 gas molecules.
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