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Article: Amorphous Molybdenum Selenide Nanosheet as an Efficient Trap for the Permanent Sequestration of Vapor-Phase Elemental Mercury

TitleAmorphous Molybdenum Selenide Nanosheet as an Efficient Trap for the Permanent Sequestration of Vapor-Phase Elemental Mercury
Authors
Keywordsamorphous MoSe3
elemental mercury
mercury selenide
nanosheets
Issue Date2019
PublisherWiley Open Access. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2198-3844
Citation
Advanced Science, 2019, v. 2019, p. article no. 1901410 How to Cite?
AbstractThe key challenge of vapor-phase elemental mercury (Hg-0) sequestration is the rational design of a sorbent with abundantly available ligands that exhibit excellent affinity toward Hg-0 to simultaneously achieve a high uptake capacity and rapid capture rate. In this work, it is demonstrated how the correct combination of functional ligands and structural properties can form an ideal remediator for permanent Hg-0 immobilization. The adsorption capacity of an amorphous molybdenum triselenide (MoSe3) nanosheet greater than 1000 mg g(-1) is the highest recorded value compared to previously reported sorbents tested in a fixed-bed reactor. Meanwhile, the uptake rate of 240 mu g g(-1) min(-1) is also the highest recorded rate value. Mercury selenide as formed exhibits extremely low leachability when environmentally exposed. This impressive performance is primarily attributed to the appropriate layer space between the nanosheets that permeated Hg-0 and the existence of diselenide (Se-2(2-)) ligands that exhibit excellent affinity toward Hg-0. Thus, this work not only provides a promising trap for permanent Hg-0 sequestration from industrial and domestic sources with minimum hazard but also provides a detailed illustration of using structural advantages to obtain an ideal sorbent as well as guidance for the further development of Hg-0 decontamination techniques.
Persistent Identifierhttp://hdl.handle.net/10722/275706
ISSN
2017 Impact Factor: 12.441
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYang, Z-
dc.contributor.authorLi, H-
dc.contributor.authorYang, J-
dc.contributor.authorYang, Q-
dc.contributor.authorZhao, J-
dc.contributor.authorYang, J-
dc.contributor.authorQu, W-
dc.contributor.authorFeng, Y-
dc.contributor.authorShih, K-
dc.date.accessioned2019-09-10T02:48:00Z-
dc.date.available2019-09-10T02:48:00Z-
dc.date.issued2019-
dc.identifier.citationAdvanced Science, 2019, v. 2019, p. article no. 1901410-
dc.identifier.issn2198-3844-
dc.identifier.urihttp://hdl.handle.net/10722/275706-
dc.description.abstractThe key challenge of vapor-phase elemental mercury (Hg-0) sequestration is the rational design of a sorbent with abundantly available ligands that exhibit excellent affinity toward Hg-0 to simultaneously achieve a high uptake capacity and rapid capture rate. In this work, it is demonstrated how the correct combination of functional ligands and structural properties can form an ideal remediator for permanent Hg-0 immobilization. The adsorption capacity of an amorphous molybdenum triselenide (MoSe3) nanosheet greater than 1000 mg g(-1) is the highest recorded value compared to previously reported sorbents tested in a fixed-bed reactor. Meanwhile, the uptake rate of 240 mu g g(-1) min(-1) is also the highest recorded rate value. Mercury selenide as formed exhibits extremely low leachability when environmentally exposed. This impressive performance is primarily attributed to the appropriate layer space between the nanosheets that permeated Hg-0 and the existence of diselenide (Se-2(2-)) ligands that exhibit excellent affinity toward Hg-0. Thus, this work not only provides a promising trap for permanent Hg-0 sequestration from industrial and domestic sources with minimum hazard but also provides a detailed illustration of using structural advantages to obtain an ideal sorbent as well as guidance for the further development of Hg-0 decontamination techniques.-
dc.languageeng-
dc.publisherWiley Open Access. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2198-3844-
dc.relation.ispartofAdvanced Science-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectamorphous MoSe3-
dc.subjectelemental mercury-
dc.subjectmercury selenide-
dc.subjectnanosheets-
dc.titleAmorphous Molybdenum Selenide Nanosheet as an Efficient Trap for the Permanent Sequestration of Vapor-Phase Elemental Mercury-
dc.typeArticle-
dc.identifier.emailFeng, Y: jerryf@HKUCC-COM.hku.hk-
dc.identifier.emailShih, K: kshih@hku.hk-
dc.identifier.authorityShih, K=rp00167-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1002/advs.201901410-
dc.identifier.scopuseid_2-s2.0-85070783019-
dc.identifier.hkuros303617-
dc.identifier.volume2019-
dc.identifier.spagearticle no. 1901410-
dc.identifier.epagearticle no. 1901410-
dc.identifier.isiWOS:000480784000001-
dc.publisher.placeGermany-

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