Microwave-induced activation of additional active edge sites on the MoS₂ surface for enhanced Hgᴼ capture

Zhao, Haitao and Mu, Xueliang and Yang, Gang and Zheng, Chengheng and Sun, Chenggong and Gao, Xiang and Wu, Tao (2017) Microwave-induced activation of additional active edge sites on the MoS₂ surface for enhanced Hgᴼ capture. Applied Surface Science, 420 . pp. 439-445. ISSN 0169-4332

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Abstract

In recent years, significant effort has been made in the development of novel materials for the removal of mercury from coal-derived flue gas. In this research, microwave irradiation was adopted to induce the creation of additional active sites on the MoS₂ surface. The results showed that Hgᴼcapture efficiency of the adsorbent containing MoS₂ nanosheets being microwave treated was as high as 97%, while the sample prepared via conventional method only showed an efficiency of 94% in its first 180 min testing. After the adsorbent was treated by microwave irradiation for 3 more times, its mercury removal efficiency was still noticeably higher than that of the sample prepared via conventional method. Characterization of surface structure of the MoS₂ containing material together with DFT study further revealed that the (001) basal planes of MoS₂ crystal structure were cracked into (100) edge planes (with an angle of approximately 75◦) under microwave treatment, which subsequently resulted in the formation of additional active edge sites on the MoS₂ surface and led to the improved performance on Hgᴼ capture.

Item Type: Article
Keywords: MoS₂surface; Mercury capture; Microwave irradiation; Additional active edge site
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Chemical and Environmental Engineering
University of Nottingham, UK > Faculty of Engineering > Department of Chemical and Environmental Engineering
Identification Number: 10.1016/j.apsusc.2017.05.161
Depositing User: Eprints, Support
Date Deposited: 20 Jul 2017 07:36
Last Modified: 20 Jul 2017 16:29
URI: http://eprints.nottingham.ac.uk/id/eprint/44187

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