Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/2398
Title: Enhanced Visible Light Activity of Nano-Titanium Dioxide Doped With Multiple Ions: Effect of Crystal Defects
Authors: Kanakkanmavudi B. Jaimy
Ghosh, Swapankumar
Warrier, Krishna Gopakumar
Keywords: Sol–gel process
TiO2 catalyst
Optical properties
Issue Date: 13-Jul-2012
Publisher: Elsevier
Citation: Journal of Solid State Chemistry 196 (2012) 465–470, 2012
Abstract: Titanium dioxide photocatalysts co-doped with iron(III) and lanthanum(III) have been prepared through a modified sol–gel method. Doping with Fe 3 þ resulted in a relatively lower anatase to rutile phase transformation temperature, while La 3 þ addition reduced the crystal growth and thus retarded the phase transformation of titania nanoparticles. The presence of Fe 3 þ ions shifted the absorption profile of titania to the longer wavelength side of the spectrum and enhanced the visible light activity. On the other hand, La 3 þ addition improved the optical absorption of titania nanoparticles. Both the dopants improved the life time of excitons by proper transferring and trapping of photoexcited charges. In the present work, considerable enhancement in photocatalytic activity under visible light was achieved through synergistic effect of optimum concentrations of the two dopants and associated crystal defects.
Appears in Collections:2012

Files in This Item:
File Description SizeFormat 
enchanced-Kanakkanmavudi-journal of solid state chemistry.pdf
  Restricted Access
1.14 MBAdobe PDFView/Open Request a copy

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