Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/1551
Full metadata record
DC FieldValueLanguage
dc.contributor.authorAnanthakumar, S-
dc.contributor.authorAnas, S-
dc.contributor.authorAmbily, J-
dc.contributor.authorMangalaraja, R V-
dc.date.accessioned2014-06-25T11:22:09Z-
dc.date.available2014-06-25T11:22:09Z-
dc.date.issued2010-
dc.identifier.citationJournal of Ceramic Processing Research 11(2):164-169;Apr 2010en_US
dc.identifier.issn1229-9162-
dc.identifier.urihttp://ir.niist.res.in:8080/jspui/handle/123456789/1551-
dc.description.abstractIn this study, the functional properties of nanocrystalline ZnO derived through a microwave assisted citrate gel decomposition technique were examined by UV-Vis and PL spectroscopy. The prepared ZnO and ZnO containing Al(3+), Ag(+) and a mixture of (Al(3+)+ Ag(+)) dopants were subjected to photocatalytic degradation of methylene blue dye under UV irradiation and photoluminescence analysis. The band gap reduction and photo-oxidation reaction kinetics were assessed. The functional properly studies revealed that ZnO nano clusters showed a UV absorption edge at 393 nm with band gap energy of 3.159 eV. A significant band gap reduction is found in mixed ions doping [Al(3+)+Ag(+)] compared to single Ag(+) and Al(3+) dopants. The photo-oxidation reaction follows pseudo- first-order reaction kinetics and a k(obs) constant of 0.273 was determined with mixed dopants. An enhanced photoactivity was confirmed by the ultrasonication of a ZnO-dye suspension. The PL measurements showed blue and red emission in Ag(+) and Al(3+) doped ZnO, respectively. The mixed ions [Al(3+) + Ag(+)] resulted in a pronounced intense orange-red emission in the visible region. In addition to this, the photoactivity of microwave-derived ZnO clusters was confirmed in a kaolin clay matrix. The kaolin modified with 2 wt% ZnO was found to be photoactive and it degraded the methylene blue dye within 3 h under UV irradiation.en_US
dc.language.isoenen_US
dc.publisherKorean Assoc Crystal Growthen_US
dc.subjectPhotocatalysisen_US
dc.subjectPhotoluminescenceen_US
dc.subjectFunctional ZnOen_US
dc.subjectDoped ZNOen_US
dc.titleMicrowave assisted citrate gel combustion synthesis of ZnO Part-II: assessment of functional propertiesen_US
dc.typeArticleen_US
Appears in Collections:2010

Files in This Item:
File Description SizeFormat 
2010_0145.pdf
  Restricted Access
291.17 kBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.