Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/76077
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dc.contributor.authorTosapol Maluangnonten_US
dc.contributor.authorNarong Chanleken_US
dc.contributor.authorOrawan Khammanen_US
dc.contributor.authorWanwilai Vittayakornen_US
dc.contributor.authorTawan Sooknoien_US
dc.date.accessioned2022-10-16T07:05:11Z-
dc.date.available2022-10-16T07:05:11Z-
dc.date.issued2021-11-01en_US
dc.identifier.issn1520510Xen_US
dc.identifier.issn00201669en_US
dc.identifier.other2-s2.0-85118232689en_US
dc.identifier.other10.1021/acs.inorgchem.1c02162en_US
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85118232689&origin=inwarden_US
dc.identifier.urihttp://cmuir.cmu.ac.th/jspui/handle/6653943832/76077-
dc.description.abstractThe studies on mechanical treatments of layered alkali metal oxides are limited despite their diverse compositions/structures and potential for property tuning. In this work, we vibratory mill Cs0.7Zn0.35Ti1.65O4, K0.8Zn0.4Ti1.6O4, and Cs2Ti6O13 for up to 4 h, during which the lepidocrocite-type structure and the plate-like morphology are well preserved. X-ray diffraction (XRD) indicates a tiny (≤0.6 Å) interlayer expansion accompanied by the enhancement of the preferred orientation along the stacking direction. Chemical analyses across multiple length scales suggest Cs deintercalation, elemental redistributions, and bulk-to-surface (or crystal edge) Cs migration. This ball-milling-induced Cs-rich moiety partially blocks the surface acid sites, although the solids still show a dominating acidic character. The ball-milled samples Cs0.7-pZn0.35-qTi1.65O4-δ contain vacancies between the sheets (p) and at the sheets (q and δ). It is deduced from Sanderson's electronegativity equalization principle and experimentally verified by X-ray photoelectron spectroscopy (XPS) that ball milling increases (decreases) the partial charge at the surface acidic Ti4+/Zn2+ (basic O2-) sites. These nonporous solids (≤20 m2·g-1) contain water sorbed on the external surface as high as 1.1 mol·mol-1, which is comparable to that in a water-intercalated sample. Our work expands the current understanding of the reactivity vs robustness in layered alkali titanates under physically demanding conditions, complementing knowledge gathered via the soft chemistry approach.en_US
dc.subjectChemistryen_US
dc.titleStructural and Compositional Characteristics of Ball-Milled Lepidocrocite Alkali Titanate and the Correlation to Its Surface Acidic-Basic Propertiesen_US
dc.typeJournalen_US
article.title.sourcetitleInorganic Chemistryen_US
article.volume60en_US
article.stream.affiliationsKing Mongkut's Institute of Technology Ladkrabangen_US
article.stream.affiliationsChiang Mai Universityen_US
article.stream.affiliationsSynchrotron Light Research Institute (Public Organization)en_US
Appears in Collections:CMUL: Journal Articles

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