1 Ocak 2014 Dergi makalesi Açık Erişim

Babu, Veluru Jagadeesh; Vempati, Sesha; Ramakrishna, Seeram

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/61207</identifier>
  <creators>
    <creator>
      <creatorName>Babu, Veluru Jagadeesh</creatorName>
      <givenName>Veluru Jagadeesh</givenName>
      <familyName>Babu</familyName>
      <affiliation>Bilkent Univ, UNAM Natl Nanotechnol Res Ctr, TR-06800 Ankara, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Vempati, Sesha</creatorName>
      <givenName>Sesha</givenName>
      <familyName>Vempati</familyName>
      <affiliation>Bilkent Univ, UNAM Natl Nanotechnol Res Ctr, TR-06800 Ankara, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Ramakrishna, Seeram</creatorName>
      <givenName>Seeram</givenName>
      <familyName>Ramakrishna</familyName>
    </creator>
  </creators>
  <titles>
    <title>Reduced Recombination And Enhanced Uv-Assisted Photocatalysis By Highly Anisotropic Titanates From Electrospun Tio2-Sio2 Nanostructures</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2014</publicationYear>
  <dates>
    <date dateType="Issued">2014-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/61207</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1039/c4ra03498h</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The surface areas of electrospun fibers/rice grain-shaped nanostructures of TiO2-SiO2 composites were further enhanced after transforming them into thorn or sponge shaped titanates via selective leaching of SiO2, which was reported by our group previously [RSC Adv., 2012, 2, 992]. In this study, we report on their application in photocatalytic activity (PCA) when juxtaposed with photoluminescence (PL). Two defect related bands are observed in PL and their origin is discussed in relation to calcination, crystallization and nucleation effects. The relative PL intensity for sponge shapes was the lowest and hence had the lowest radiative recombination, which suggests carrier trapping at defect centers. This enables the charge carriers to migrate to the surface and participate in the PCA. The results of PCA suggested that the sponge-shaped titanate exhibits the highest degradation rate among all samples. A plausible mechanism for the differences in PCA is proposed based on the variation in the defect-densities.</description>
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