The hydroxylated surface of MgO powders and the formation of surface sites

S. Coluccia; S. Lavagnino; L. Marchese

doi:10.1016/0254-0584(88)90016-8

The hydroxylated surface of MgO powders and the formation of surface sites

S. Coluccia, S. Lavagnino, L. Marchese

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

The structure of the hydroxylated surface of MgO powders has been studied by infrared spectroscopy and microgravimetry. It is shown that: 1. 1) OH^- groups on corner and edge sites absorb at higher frequency than those on extended {100} faces; 2. 2) the former hydroxyls are more stable than the latter; 3. 3) some surface reconstruction may occur upon hydroxylation-dehydroxylation cycles; 4. 4) neutral anion vacancies might be formed in the last stages of surface dehydroxylation.

Lingua originale	Inglese
pagine (da-a)	445-464
Numero di pagine	20
Rivista	Materials Chemistry and Physics
Volume	18
Numero di pubblicazione	5-6
DOI	https://doi.org/10.1016/0254-0584(88)90016-8
Stato di pubblicazione	Pubblicato - 1988
Pubblicato esternamente	Sì

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10.1016/0254-0584(88)90016-8

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abstract = "The structure of the hydroxylated surface of MgO powders has been studied by infrared spectroscopy and microgravimetry. It is shown that: 1. 1) OH- groups on corner and edge sites absorb at higher frequency than those on extended {100} faces; 2. 2) the former hydroxyls are more stable than the latter; 3. 3) some surface reconstruction may occur upon hydroxylation-dehydroxylation cycles; 4. 4) neutral anion vacancies might be formed in the last stages of surface dehydroxylation.",

author = "S. Coluccia and S. Lavagnino and L. Marchese",

year = "1988",

doi = "10.1016/0254-0584(88)90016-8",

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AU - Lavagnino, S.

AU - Marchese, L.

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N2 - The structure of the hydroxylated surface of MgO powders has been studied by infrared spectroscopy and microgravimetry. It is shown that: 1. 1) OH- groups on corner and edge sites absorb at higher frequency than those on extended {100} faces; 2. 2) the former hydroxyls are more stable than the latter; 3. 3) some surface reconstruction may occur upon hydroxylation-dehydroxylation cycles; 4. 4) neutral anion vacancies might be formed in the last stages of surface dehydroxylation.

AB - The structure of the hydroxylated surface of MgO powders has been studied by infrared spectroscopy and microgravimetry. It is shown that: 1. 1) OH- groups on corner and edge sites absorb at higher frequency than those on extended {100} faces; 2. 2) the former hydroxyls are more stable than the latter; 3. 3) some surface reconstruction may occur upon hydroxylation-dehydroxylation cycles; 4. 4) neutral anion vacancies might be formed in the last stages of surface dehydroxylation.

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U2 - 10.1016/0254-0584(88)90016-8

DO - 10.1016/0254-0584(88)90016-8

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EP - 464

JO - Materials Chemistry and Physics

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ER -

The hydroxylated surface of MgO powders and the formation of surface sites

Abstract

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