The decomposition of the layered double hydroxides of Co and Al: phase segregation of a new single phase spinel oxide.
Identifieur interne : 000012 ( PubMed/Corpus ); précédent : 000011; suivant : 000013The decomposition of the layered double hydroxides of Co and Al: phase segregation of a new single phase spinel oxide.
Auteurs : Salem Babay ; Alain Bulou ; Anne Marie Mercier ; Mouhamed ToumiSource :
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [ 1873-3557 ] ; 2015.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Aluminum, Aluminum Oxide, Cobalt, Hydroxides, Magnesium Oxide, Oxides.
- Spectroscopy, Fourier Transform Infrared, Spectrum Analysis, Raman, Static Electricity, Temperature, Vibration, X-Ray Diffraction.
Abstract
Monophasic Co-Al-CO3-like layered double hydroxides has been prepared by the coprecipitation method. It has been characterised by Rietveld refinement of the X-ray powder diffraction pattern, DTA-TGA, infrared and Raman spectroscopies. Its structure is trigonal, R3̅m with cell parameters a=0.3061(4) nm and c=2.252 (3) nm. The decomposition of this hydrotalcite-like structure on heating up to 800 °C yields to a single phase spinel oxide. Besides, infrared and Raman spectroscopies showed the presence of spinel-like domains. The results of Rietveld refinement have revealed that this compound has the Fd3̅m space group (a=0.8088(4) nm), with crystallographic formula [Co(II)0.75Al0.25](8a)[Co(II)0.252Co(III)0.77Al0.98](16d)O4, which is of the general formula Co1.77Al1.23O4. This structure is also validated by the charge distribution (CD) analysis.
DOI: 10.1016/j.saa.2015.01.021
PubMed: 25659816
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Messiaen, 7285 LE MANS Cedex 9, France.</nlm:affiliation></affiliation></author><author><name sortKey="Mercier, Anne Marie" sort="Mercier, Anne Marie" uniqKey="Mercier A" first="Anne Marie" last="Mercier">Anne Marie Mercier</name><affiliation><nlm:affiliation>LUMAN Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et Materiaux du Mans (IMMM), Avenue O. Messiaen, 7285 LE MANS Cedex 9, France.</nlm:affiliation></affiliation></author><author><name sortKey="Toumi, Mouhamed" sort="Toumi, Mouhamed" uniqKey="Toumi M" first="Mouhamed" last="Toumi">Mouhamed Toumi</name><affiliation><nlm:affiliation>Laboratory of the Physico-Chemistry of Solid States, LR11 ES51, University of Sfax, Road of Soukra km 4, Sfax 3038, Tunisia. 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Electronic address: salem.babay@yahoo.fr.</nlm:affiliation></affiliation></author><author><name sortKey="Bulou, Alain" sort="Bulou, Alain" uniqKey="Bulou A" first="Alain" last="Bulou">Alain Bulou</name><affiliation><nlm:affiliation>LUMAN Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et Materiaux du Mans (IMMM), Avenue O. Messiaen, 7285 LE MANS Cedex 9, France.</nlm:affiliation></affiliation></author><author><name sortKey="Mercier, Anne Marie" sort="Mercier, Anne Marie" uniqKey="Mercier A" first="Anne Marie" last="Mercier">Anne Marie Mercier</name><affiliation><nlm:affiliation>LUMAN Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et Materiaux du Mans (IMMM), Avenue O. Messiaen, 7285 LE MANS Cedex 9, France.</nlm:affiliation></affiliation></author><author><name sortKey="Toumi, Mouhamed" sort="Toumi, Mouhamed" uniqKey="Toumi M" first="Mouhamed" last="Toumi">Mouhamed Toumi</name><affiliation><nlm:affiliation>Laboratory of the Physico-Chemistry of Solid States, LR11 ES51, University of Sfax, Road of Soukra km 4, Sfax 3038, Tunisia. Electronic address: mohamed.toumi@fss.rnu.tn.</nlm:affiliation></affiliation></author></analytic><series><title level="j">Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy</title><idno type="eISSN">1873-3557</idno><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminum (chemistry)</term><term>Aluminum Oxide (chemistry)</term><term>Cobalt (chemistry)</term><term>Hydroxides (chemistry)</term><term>Magnesium Oxide (chemistry)</term><term>Oxides (chemistry)</term><term>Spectroscopy, Fourier Transform Infrared</term><term>Spectrum Analysis, Raman</term><term>Static Electricity</term><term>Temperature</term><term>Vibration</term><term>X-Ray Diffraction</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Aluminum</term><term>Aluminum Oxide</term><term>Cobalt</term><term>Hydroxides</term><term>Magnesium Oxide</term><term>Oxides</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Spectroscopy, Fourier Transform Infrared</term><term>Spectrum Analysis, Raman</term><term>Static Electricity</term><term>Temperature</term><term>Vibration</term><term>X-Ray Diffraction</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Monophasic Co-Al-CO3-like layered double hydroxides has been prepared by the coprecipitation method. It has been characterised by Rietveld refinement of the X-ray powder diffraction pattern, DTA-TGA, infrared and Raman spectroscopies. Its structure is trigonal, R3̅m with cell parameters a=0.3061(4) nm and c=2.252 (3) nm. The decomposition of this hydrotalcite-like structure on heating up to 800 °C yields to a single phase spinel oxide. Besides, infrared and Raman spectroscopies showed the presence of spinel-like domains. The results of Rietveld refinement have revealed that this compound has the Fd3̅m space group (a=0.8088(4) nm), with crystallographic formula [Co(II)0.75Al0.25](8a)[Co(II)0.252Co(III)0.77Al0.98](16d)O4, which is of the general formula Co1.77Al1.23O4. This structure is also validated by the charge distribution (CD) analysis.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25659816</PMID><DateCreated><Year>2015</Year><Month>2</Month><Day>27</Day></DateCreated><DateCompleted><Year>2015</Year><Month>11</Month><Day>16</Day></DateCompleted><DateRevised><Year>2015</Year><Month>2</Month><Day>27</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-3557</ISSN><JournalIssue CitedMedium="Internet"><Volume>141</Volume><PubDate><Year>2015</Year><Month>Apr</Month><Day>15</Day></PubDate></JournalIssue><Title>Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy</Title><ISOAbbreviation>Spectrochim Acta A Mol Biomol Spectrosc</ISOAbbreviation></Journal><ArticleTitle>The decomposition of the layered double hydroxides of Co and Al: phase segregation of a new single phase spinel oxide.</ArticleTitle><Pagination><MedlinePgn>80-7</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.saa.2015.01.021</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S1386-1425(15)00031-1</ELocationID><Abstract><AbstractText>Monophasic Co-Al-CO3-like layered double hydroxides has been prepared by the coprecipitation method. It has been characterised by Rietveld refinement of the X-ray powder diffraction pattern, DTA-TGA, infrared and Raman spectroscopies. Its structure is trigonal, R3̅m with cell parameters a=0.3061(4) nm and c=2.252 (3) nm. The decomposition of this hydrotalcite-like structure on heating up to 800 °C yields to a single phase spinel oxide. Besides, infrared and Raman spectroscopies showed the presence of spinel-like domains. The results of Rietveld refinement have revealed that this compound has the Fd3̅m space group (a=0.8088(4) nm), with crystallographic formula [Co(II)0.75Al0.25](8a)[Co(II)0.252Co(III)0.77Al0.98](16d)O4, which is of the general formula Co1.77Al1.23O4. This structure is also validated by the charge distribution (CD) analysis.</AbstractText><CopyrightInformation>Copyright © 2015 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Babay</LastName><ForeName>Salem</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Laboratory of the Physico-Chemistry of Solid States, LR11 ES51, University of Sfax, Road of Soukra km 4, Sfax 3038, Tunisia. Electronic address: salem.babay@yahoo.fr.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bulou</LastName><ForeName>Alain</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>LUMAN Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et Materiaux du Mans (IMMM), Avenue O. Messiaen, 7285 LE MANS Cedex 9, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mercier</LastName><ForeName>Anne Marie</ForeName><Initials>AM</Initials><AffiliationInfo><Affiliation>LUMAN Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et Materiaux du Mans (IMMM), Avenue O. Messiaen, 7285 LE MANS Cedex 9, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Toumi</LastName><ForeName>Mouhamed</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Laboratory of the Physico-Chemistry of Solid States, LR11 ES51, University of Sfax, Road of Soukra km 4, Sfax 3038, Tunisia. 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