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Three-dimensional Flower-like Mg(OH)2@MoS2 Nanocomposite: Fabrication, Characterization and High-performance Sensing Properties to NOx at Room Temperature

Abstract

A three dimensional (3D) flower-like hierarchical Mg(OH)2@MoS2 composite was fabricated by one of ordinary hydrothermal technology. By adjusting the ratio of MoS2 and Mg(OH)2, the morphology can be well-controlled. For Mg(OH)2@MoS2 which was made up of nanosheets (NSs), Mg(OH)2 nanosheets (NSs) serves as alkaline center and benefit to the adsorption and diffusion of acidic NOx gas. And the 3D hierarchical 2-Mg-MoS2 (the contents of MoS2 in Mg(OH)2@MoS2 is 33.3 mol%) is not only beneficial to NOx adsorption on the surface but also of strengthen the interaction between target gas molecules and the active sites. As a result, 2-Mg-MoS2 exhibited excellent sensing properties, and the response toward 100 ppm NOx could reach to 4.73 and the response time was 3 s. In addition, the detection limit of 2-Mg-MoS2 is 0.1 ppm at room temperature (RT). The results demonstrate that it showed outstanding selectivity and stability at RT. The 2-Mg-MoS2 sensor has significant implications for the monitoring polluted air.

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Publication details

The article was received on 07 Jul 2017, accepted on 03 Sep 2017 and first published on 04 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ02447A
Citation: New J. Chem., 2017, Accepted Manuscript
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    Three-dimensional Flower-like Mg(OH)2@MoS2 Nanocomposite: Fabrication, Characterization and High-performance Sensing Properties to NOx at Room Temperature

    J. Kang, M. Ikram, Y. Zhao, J. Zhang, A. U. Rehman, L. Gong and K. Shi, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ02447A

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