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

Zhao, Haitao; Mu, Xueliang; Yang, Gang; Zheng, Chengheng; Sun, Chenggong; Gao, Xiang; Wu, Tao

Authors

Haitao Zhao

Xueliang Mu

Gang Yang

Chengheng Zheng

Xiang Gao

Tao Wu



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.

Journal Article Type Article
Publication Date 2017-10
Journal Applied Surface Science
Print ISSN 0169-4332
Electronic ISSN 0169-4332
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 420
Pages 439-445
APA6 Citation Zhao, H., Mu, X., Yang, G., Zheng, C., Sun, C., Gao, X., & Wu, T. (2017). Microwave-induced activation of additional active edge sites on the MoS₂ surface for enhanced Hgᴼ capture. Applied Surface Science, 420, 439-445. https://doi.org/10.1016/j.apsusc.2017.05.161
DOI https://doi.org/10.1016/j.apsusc.2017.05.161
Keywords MoS₂surface; Mercury capture; Microwave irradiation; Additional active edge site
Publisher URL http://www.sciencedirect.com/science/article/pii/S0169433217315167?via%3Dihub
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0
Additional Information This article is maintained by: Elsevier; Article Title: Microwave-induced activation of additional active edge sites on the MoS2 surface for enhanced Hg0 capture; Journal Title: Applied Surface Science; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.apsusc.2017.05.161; Content Type: article; Copyright: © 2017 Elsevier B.V. All rights reserved.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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