Hierarchical Nanoheterostructure of Tungsten Disulfide Nanoflowers Doped with Zinc Oxide Hollow Spheres: Benzene Gas Sensing Properties and First-Principles Study

ACS Applied Materials & Interfaces
Dongzhi ZhangZhimin Yang

Abstract

This paper reports an original fabrication of a benzene gas sensor based on tungsten disulfide nanoflowers (WS2 NFs)/zinc oxide hollow spheres (ZnO HMDs) hierarchical nanoheterostructure. The ZnO/WS2 hierarchical composite was characterized for the inspection of its nanostructure, elementary composition, and surface morphology. The benzene-sensing properties of the ZnO/WS2 nanofilm sensor were exactly investigated. The results illustrate that the ZnO/WS2 sensor exhibits a remarkable sensing performance toward benzene gas, including good sensitivity, rapid detection, outstanding repeatability, and stability. This is attributed to the fact that the ZnO/WS2 nanoheterostructure can dramatically enhance the benzene sensing performance. Furthermore, density functional theory was employed to construct the benzene gas adsorption model for the ZnO/WS2 heterostructure, from which the determined parameters in geometry, energy, and charge provided a powerful support for the mechanism explanation. This work suggests that the ZnO/WS2 nanoheterostructure is competent to detect trace benzene gas at room temperature.

References

Apr 25, 2006·Physical Chemistry Chemical Physics : PCCP·Bernd MeyerDominik Marx
Aug 3, 2011·Physical Chemistry Chemical Physics : PCCP·Yandong MaBaibiao Huang
Apr 11, 2018·International Journal of Cancer. Journal International Du Cancer·Ole Raaschou-NielsenMette Sørensen
Jun 30, 2018·Journal of Colloid and Interface Science·Junfeng WuYuhua Cao

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Citations

Mar 29, 2020·Physical Chemistry Chemical Physics : PCCP·Vishnuraj RamakrishnanBiji Pullithadathil
Sep 12, 2020·Sensors·Izabela Constantinoiu, Cristian Viespe
Oct 7, 2020·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Chao-Nan WangHao-Li Zhang
Jun 1, 2021·Journal of Colloid and Interface Science·Jingjing LiuJiaguo Yu
Oct 6, 2020·ACS Applied Materials & Interfaces·Heping CuiXianping Chen

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