In situ synthesis of hierarchical cobalt-aluminum layered double hydroxide on boehmite surface for efficient removal of arsenate from aqueous solutions: Effects of solution chemistry factors and sorption mechanism
DC Field | Value | Language |
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dc.contributor.author | Lee, Seon Yong | - |
dc.contributor.author | Jung, Kyung-Won | - |
dc.contributor.author | Choi, Jae-Woo | - |
dc.contributor.author | Lee, Young Jae | - |
dc.date.accessioned | 2021-09-01T11:32:30Z | - |
dc.date.available | 2021-09-01T11:32:30Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-07-15 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/64098 | - |
dc.description.abstract | A facile route is reported for the in situ formation of three-dimensionally structured hierarchical Co-Al layered double hydroxide (CoAl-LDH) crystals on a boehmite surface (CoAl-LDH@boehmite) via the dissolution of boehmite followed by the coprecipitation of Co and Al ions on the boehmite surface. The physicochemical properties of the as-prepared materials were characterized and tested for evaluating their sorption affinity toward arsenate (As(V)) in an aqueous solution. The characterization results confirmed that the plate-like CoAlL-DH nanocrystals were densely and uniformly formed on the boehmite surface with a three-dimensional hierarchical structure. Batch experiments were conducted systematically to evaluate the effects of the sorbent dosage, initial pH, competitive anions, and temperature on the sorption behavior of CoAl-LDH@boehmite. The sorption kinetics and isotherms studies indicated that the As(V) sorption processes could be well described by the pseudo-second-order and Sips isotherm models, respectively. The sorption mechanisms were confirmed by various solid phase analyses, including X-ray diffraction, Fourier transform infrared, transmission electron microscopy, X-ray photoelectron spectroscopy, and extended X-ray absorption fine structure. These findings suggest that the intercalation of As(V) into the interlayer region via anion exchange and bidentate-binuclear innersphere surface complexation due to ligand exchange were responsible for the removal of As(V) by CoAl-LDH@boehmite. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | ADSORPTION | - |
dc.subject | WATER | - |
dc.subject | PHOSPHATE | - |
dc.subject | ADSORBENTS | - |
dc.subject | NANOCOMPOSITES | - |
dc.subject | PERFORMANCE | - |
dc.subject | CO | - |
dc.subject | CONTAMINATION | - |
dc.subject | SOLUBILITY | - |
dc.subject | BEHAVIOR | - |
dc.title | In situ synthesis of hierarchical cobalt-aluminum layered double hydroxide on boehmite surface for efficient removal of arsenate from aqueous solutions: Effects of solution chemistry factors and sorption mechanism | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Young Jae | - |
dc.identifier.doi | 10.1016/j.cej.2019.03.043 | - |
dc.identifier.scopusid | 2-s2.0-85062558273 | - |
dc.identifier.wosid | 000462769600085 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.368, pp.914 - 923 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 368 | - |
dc.citation.startPage | 914 | - |
dc.citation.endPage | 923 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | PHOSPHATE | - |
dc.subject.keywordPlus | ADSORBENTS | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CO | - |
dc.subject.keywordPlus | CONTAMINATION | - |
dc.subject.keywordPlus | SOLUBILITY | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordAuthor | Arsenic removal | - |
dc.subject.keywordAuthor | Layered double hydroxide | - |
dc.subject.keywordAuthor | Boehmite | - |
dc.subject.keywordAuthor | Hierarchical structure | - |
dc.subject.keywordAuthor | Anion exchange | - |
dc.subject.keywordAuthor | Ligand exchange | - |
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