DC Field | Value | Language |
---|---|---|
dc.contributor.author | Antochshuk, V | ko |
dc.contributor.author | Olkhovyk, O | ko |
dc.contributor.author | Jaroniec, M | ko |
dc.contributor.author | Park, IS | ko |
dc.contributor.author | Ryoo, Ryong | ko |
dc.date.accessioned | 2010-02-22T07:02:19Z | - |
dc.date.available | 2010-02-22T07:02:19Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2003-04 | - |
dc.identifier.citation | LANGMUIR, v.19, no.7, pp.3031 - 3034 | - |
dc.identifier.issn | 0743-7463 | - |
dc.identifier.uri | http://hdl.handle.net/10203/16750 | - |
dc.description.abstract | An incorporation of 1-benzoyl-3-propylthiourea groups into siliceous mesopores of MCM-41 afforded an ordered material with open porosity. This material was prepared via a two-step modification by attachment of an aminopropyl functionality and its subsequent conversion into a thiourea ligand. About 1.5 mmol/g of 1-benzoyl-3-propylthiourea groups was attached to the silica surface, which resulted in ca. 70% conversion of amino groups. Such material has a large surface area of 380 m(2)/g and accessible mesopores of 3.0 nm in diameter. The presence of several functional groups in the thiourea structure, able to coordinate metal ions, causes a significant enhancement of the maximum capacity of this material toward mercury ions. The maximum loading of mercury ions from aqueous solution for this material was ca. 1.0 g Hg2+/g or 5.0 mmol Hg2+/g, exceeding the capacity of the previously known samples by about twice. The fit of the mercury adsorption isotherm by a two-term Langmuir-Freundlich equation suggests a two-step adsorption process characterized by different adsorption constants. A relatively weak mercury interaction with 1-benzoyl-3-propylthiourea ligands made the adsorbent's regeneration possible under mild conditions via washing the mercury-loaded samples with slightly acidified aqueous thiourea solution. The regenerated material retained over 70% of the initial adsorption capacity. | - |
dc.description.sponsorship | TheKSUauthors acknowledge the National Science Foundation, Grant CTS-0086512, for the support of this research. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | HIGHLY ORDERED MCM-41 | - |
dc.subject | MOLECULAR-SIEVES | - |
dc.subject | NITROGEN ADSORPTION | - |
dc.title | Benzoylthiourea-modified mesoporous silica for mercury(II) removal | - |
dc.type | Article | - |
dc.identifier.wosid | 000181980900070 | - |
dc.identifier.scopusid | 2-s2.0-0037502988 | - |
dc.type.rims | ART | - |
dc.citation.volume | 19 | - |
dc.citation.issue | 7 | - |
dc.citation.beginningpage | 3031 | - |
dc.citation.endingpage | 3034 | - |
dc.citation.publicationname | LANGMUIR | - |
dc.identifier.doi | 10.1021/la026739z | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Ryoo, Ryong | - |
dc.contributor.nonIdAuthor | Antochshuk, V | - |
dc.contributor.nonIdAuthor | Olkhovyk, O | - |
dc.contributor.nonIdAuthor | Jaroniec, M | - |
dc.contributor.nonIdAuthor | Park, IS | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | HIGHLY ORDERED MCM-41 | - |
dc.subject.keywordPlus | MOLECULAR-SIEVES | - |
dc.subject.keywordPlus | NITROGEN ADSORPTION | - |
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