Adsorption of organic matter at mineral/water interfaces: 7. ATR-FTIR and quantum chemical study of lactate interactions with hematite nanoparticles
DC Field | Value | Language |
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dc.contributor.author | Ha, Juyoung | - |
dc.contributor.author | Yoon, Tae Hyun | - |
dc.contributor.author | Wang, Yingge | - |
dc.contributor.author | Musgrave, Charles B. | - |
dc.contributor.author | Brown, Gordon E., Jr. | - |
dc.date.accessioned | 2022-12-21T02:00:37Z | - |
dc.date.available | 2022-12-21T02:00:37Z | - |
dc.date.created | 2022-08-26 | - |
dc.date.issued | 2008-07 | - |
dc.identifier.issn | 0743-7463 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/178175 | - |
dc.description.abstract | The interaction of the L-lactate ion (L-CH3CH(OH)COO-, Lact(-1)) with hematite (alpha-Fe2O3) nanoparticles (average diameter 11 nm) in the presence of bulk water at pH 5 and 25 degrees C was examined using a combination of (1) macroscopic uptake measurements, (2) in situ attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, and (3) density functional theory modeling at the B3LYP/6-31+G* level. Uptake measurements indicate that increasing [Lact(-1)]((aq)) results in an increase in Lact(-1) uptake and a concomitant increase in Fe(III) release as a result of the dissolution of the hematite nanoparticles. The ATR-FTIR spectra of aqueous Lact(-1) and Lact(-1) adsorbed onto hematite nanoparticles at coverages ranging from 0.52 to 5.21 mu mol/m(2) showed significant differences in peak positions and shapes of carboxyl group stretches. On the basis of Gaussian fits of the spectra, we conclude that Lact-1 is present as both outer-sphere and inner-sphere complexes on the hematite nanoparticles. No significant dependence of the extent of Lact(-1) adsorption on background electrolyte concentration was found, suggesting that the dominant adsorption mode for Lact(-1) is inner sphere under these conditions. On the basis of quantum chemical modeling, we suggest that inner-sphere complexes of Lact(-1) adsorbed on hematite nanoparticles occur dominantly as monodentate, mononuclear complexes with the hydroxyl functional group pointing away from the Fe(Ill) center. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Adsorption of organic matter at mineral/water interfaces: 7. ATR-FTIR and quantum chemical study of lactate interactions with hematite nanoparticles | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yoon, Tae Hyun | - |
dc.identifier.doi | 10.1021/la800122v | - |
dc.identifier.scopusid | 2-s2.0-47349115491 | - |
dc.identifier.wosid | 000257101100042 | - |
dc.identifier.bibliographicCitation | LANGMUIR, v.24, no.13, pp.6683 - 6692 | - |
dc.relation.isPartOf | LANGMUIR | - |
dc.citation.title | LANGMUIR | - |
dc.citation.volume | 24 | - |
dc.citation.number | 13 | - |
dc.citation.startPage | 6683 | - |
dc.citation.endPage | 6692 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | CHROMATOGRAPHY-MASS SPECTROMETRY | - |
dc.subject.keywordPlus | OUTER-SPHERE ADSORPTION | - |
dc.subject.keywordPlus | SPECTROSCOPIC EVIDENCE | - |
dc.subject.keywordPlus | SURFACE COMPLEXES | - |
dc.subject.keywordPlus | LACTIC-ACID | - |
dc.subject.keywordPlus | SPECIATION | - |
dc.subject.keywordPlus | REACTIVITY | - |
dc.subject.keywordPlus | PHOSPHATE | - |
dc.subject.keywordPlus | ALUMINUM | - |
dc.subject.keywordPlus | OXALATE | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/la800122v | - |
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