Electrochemical synthesis of nanocrystalline In2O3:Sn (ITO) in an aqueous system with ammonium acetate as conducting salt.
Identifieur interne : 001F19 ( Main/Exploration ); précédent : 001F18; suivant : 001F20Electrochemical synthesis of nanocrystalline In2O3:Sn (ITO) in an aqueous system with ammonium acetate as conducting salt.
Auteurs : RBID : pubmed:19438011Abstract
Nanoscaled so called indium tin oxide In2O3:Sn (ITO) with a specific BET surface area of 50 m2/g to 60 m2/g was prepared via an electrochemical method in an aqueous system containing ammonium acetate as conductive salt. As an intermediate product of the synthesis nanocrystalline In(OH)3 is obtained which serves as a precursor for the subsequent calcinations accompanied by tin doping resulting in ITO powders with various tin concentrations. Its phase transitions and the reduction behaviour of hydroxide to oxide during the calcination process in air flow and forming gas atmosphere of N2 to H2 ratio of 95 to 5 respectively, have been investigated by high temperature X-ray diffraction, TG/DSC/MS, HRTEM and SEM analysis. Depending on the atmosphere dehydration of tin doped In(OH)3 started at 150 degrees C, cubic ITO solid solution formed between 190 degrees C and 300 degrees C. The total weight loss of the hydroxide of approx. 21% occurred mainly below 360 degrees C and the burn-out of organic components mainly between 308 degrees C and 316 degrees C. The results of DSC and MS analyses were in good agreement with the results of the X-ray diffraction. In addition, the products have been characterized by EDX associated with TEM, XPS, ICP-AES, BET analysis and 119Sn Mössbauer spectroscopy. Completely reacted samples of ITO have been processed to pellets, calcined and sintered in the temperature range between 900 degrees C and 1100 degrees C and characterized by measurements of the electrical conductivities of bulk and surface in the reduced as well as in the oxidized state giving values up to 1400 Scm(-1).
PubMed: 19438011
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Electrochemical synthesis of nanocrystalline In2O3:Sn (ITO) in an aqueous system with ammonium acetate as conducting salt.</title><author><name sortKey="Veith, M" uniqKey="Veith M">M Veith</name><affiliation wicri:level="3"><nlm:affiliation>INM-Leibniz Institute for New Materials, Campus D2 2, D-66123 Saarbrücken, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>INM-Leibniz Institute for New Materials, Campus D2 2, D-66123 Saarbrücken</wicri:regionArea><placeName><region type="land" nuts="2">Sarre (Land)</region><settlement type="city">Sarrebruck</settlement></placeName></affiliation></author><author><name sortKey="Rabung, B" uniqKey="Rabung B">B Rabung</name></author><author><name sortKey="Grobelsek, I" uniqKey="Grobelsek I">I Grobelsek</name></author><author><name sortKey="Klook, M" uniqKey="Klook M">M Klook</name></author><author><name sortKey="Wagner, F E" uniqKey="Wagner F">F E Wagner</name></author><author><name sortKey="Quilitz, M" uniqKey="Quilitz M">M Quilitz</name></author></titleStmt><publicationStmt><date when="2009">2009</date><idno type="RBID">pubmed:19438011</idno><idno type="pmid">19438011</idno><idno type="wicri:Area/Main/Corpus">001E67</idno><idno type="wicri:Area/Main/Curation">001E67</idno><idno type="wicri:Area/Main/Exploration">001F19</idno></publicationStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Nanoscaled so called indium tin oxide In2O3:Sn (ITO) with a specific BET surface area of 50 m2/g to 60 m2/g was prepared via an electrochemical method in an aqueous system containing ammonium acetate as conductive salt. As an intermediate product of the synthesis nanocrystalline In(OH)3 is obtained which serves as a precursor for the subsequent calcinations accompanied by tin doping resulting in ITO powders with various tin concentrations. Its phase transitions and the reduction behaviour of hydroxide to oxide during the calcination process in air flow and forming gas atmosphere of N2 to H2 ratio of 95 to 5 respectively, have been investigated by high temperature X-ray diffraction, TG/DSC/MS, HRTEM and SEM analysis. Depending on the atmosphere dehydration of tin doped In(OH)3 started at 150 degrees C, cubic ITO solid solution formed between 190 degrees C and 300 degrees C. The total weight loss of the hydroxide of approx. 21% occurred mainly below 360 degrees C and the burn-out of organic components mainly between 308 degrees C and 316 degrees C. The results of DSC and MS analyses were in good agreement with the results of the X-ray diffraction. In addition, the products have been characterized by EDX associated with TEM, XPS, ICP-AES, BET analysis and 119Sn Mössbauer spectroscopy. Completely reacted samples of ITO have been processed to pellets, calcined and sintered in the temperature range between 900 degrees C and 1100 degrees C and characterized by measurements of the electrical conductivities of bulk and surface in the reduced as well as in the oxidized state giving values up to 1400 Scm(-1).</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">19438011</PMID><DateCreated><Year>2009</Year><Month>05</Month><Day>14</Day></DateCreated><DateCompleted><Year>2009</Year><Month>06</Month><Day>08</Day></DateCompleted><Article PubModel="Print"><Journal><ISSN IssnType="Print">1533-4880</ISSN><JournalIssue CitedMedium="Print"><Volume>9</Volume><Issue>4</Issue><PubDate><Year>2009</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Journal of nanoscience and nanotechnology</Title><ISOAbbreviation>J Nanosci Nanotechnol</ISOAbbreviation></Journal><ArticleTitle>Electrochemical synthesis of nanocrystalline In2O3:Sn (ITO) in an aqueous system with ammonium acetate as conducting salt.</ArticleTitle><Pagination><MedlinePgn>2616-27</MedlinePgn></Pagination><Abstract><AbstractText>Nanoscaled so called indium tin oxide In2O3:Sn (ITO) with a specific BET surface area of 50 m2/g to 60 m2/g was prepared via an electrochemical method in an aqueous system containing ammonium acetate as conductive salt. As an intermediate product of the synthesis nanocrystalline In(OH)3 is obtained which serves as a precursor for the subsequent calcinations accompanied by tin doping resulting in ITO powders with various tin concentrations. Its phase transitions and the reduction behaviour of hydroxide to oxide during the calcination process in air flow and forming gas atmosphere of N2 to H2 ratio of 95 to 5 respectively, have been investigated by high temperature X-ray diffraction, TG/DSC/MS, HRTEM and SEM analysis. Depending on the atmosphere dehydration of tin doped In(OH)3 started at 150 degrees C, cubic ITO solid solution formed between 190 degrees C and 300 degrees C. The total weight loss of the hydroxide of approx. 21% occurred mainly below 360 degrees C and the burn-out of organic components mainly between 308 degrees C and 316 degrees C. The results of DSC and MS analyses were in good agreement with the results of the X-ray diffraction. In addition, the products have been characterized by EDX associated with TEM, XPS, ICP-AES, BET analysis and 119Sn Mössbauer spectroscopy. Completely reacted samples of ITO have been processed to pellets, calcined and sintered in the temperature range between 900 degrees C and 1100 degrees C and characterized by measurements of the electrical conductivities of bulk and surface in the reduced as well as in the oxidized state giving values up to 1400 Scm(-1).</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Veith</LastName><ForeName>M</ForeName><Initials>M</Initials><Affiliation>INM-Leibniz Institute for New Materials, Campus D2 2, D-66123 Saarbrücken, Germany.</Affiliation></Author><Author ValidYN="Y"><LastName>Rabung</LastName><ForeName>B</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Grobelsek</LastName><ForeName>I</ForeName><Initials>I</Initials></Author><Author ValidYN="Y"><LastName>Klook</LastName><ForeName>M</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Wagner</LastName><ForeName>F E</ForeName><Initials>FE</Initials></Author><Author ValidYN="Y"><LastName>Quilitz</LastName><ForeName>M</ForeName><Initials>M</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Nanosci Nanotechnol</MedlineTA><NlmUniqueID>101088195</NlmUniqueID><ISSNLinking>1533-4880</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2009</Year><Month>5</Month><Day>15</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>5</Month><Day>15</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2009</Year><Month>5</Month><Day>15</Day><Hour>9</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">19438011</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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