Investigation on the phase transformation and lattice parameters of Sn 2+ , Cu 2+ , La 3+ and Ce 4+ ions doped titania: characterization and solar light activity study
- Title
- Investigation on the phase transformation and lattice parameters of Sn 2+ , Cu 2+ , La 3+ and Ce 4+ ions doped titania: characterization and solar light activity study
- Creator
- Sunaja Devi K.R.; Mohan M.K.; Pinheiro D.; Rajan R.; Nizam A.; Sugunan S.
- Description
- Nanocrystalline titania and metal ion doped titania systems were prepared by combustion method. Titania exhibited bicrystalline phase consisting of both anatase and rutile. The bicrystalline framework in TiO 2 powders can be conveniently altered by the incorporation of various bivalent/trivalent/tetravalent metal ions like Sn 2+ , Cu 2+ , La 3+ and Ce 4+ . The microstructure development and the influence of small amount of dopants on the resulting structural change have been investigated. p-XRD results confirms the stabilization of anatase phase in the case of Cu 2+ and Sn 2+ doped titania, while the polymorphic interfaces were retained in La 3+ and Ce 4+ doped titania samples. The efficacy of the modified titania was studied on the degradation of Congo Red dye by harvesting solar light. Sn 2+ /TiO 2 shows almost same photodegradation ability as that of pristine TiO 2. Subsistence of catalytic hot spots at the interface of anatase-rutile and the synergistic effect of polymorphic phases explains the enhanced activity of La 3+ /TiO 2 and Ce 4+ /TiO 2 . But the activity of Cu 2+ /TiO 2 was found to be less due to high electron-hole recombination rate. 2019 Elsevier GmbH
- Source
- Optik, Vol-183, pp. 496-507.
- Date
- 2019-01-01
- Publisher
- Elsevier GmbH
- Subject
- Modified titania; Photocatalytic degradation; Solar light; Titania
- Coverage
- Sunaja Devi K.R., Department of Chemistry, CHRIST (Deemed to be University), Bangalore-29, Karnataka, India; Mohan M.K., Department of Sciences & Humanities, Faculty of Engineering, CHRIST (Deemed to be University), Bangalore-74, Karnataka, India; Pinheiro D., Department of Chemistry, CHRIST (Deemed to be University), Bangalore-29, Karnataka, India; Rajan R., Department of Chemistry, CHRIST (Deemed to be University), Bangalore-29, Karnataka, India; Nizam A., Department of Chemistry, CHRIST (Deemed to be University), Bangalore-29, Karnataka, India; Sugunan S., Department of Applied Chemistry, Cochin University of Science and Technology, Kochi-22, Kerala, India
- Rights
- Restricted Access
- Relation
- ISSN: 304026
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Sunaja Devi K.R.; Mohan M.K.; Pinheiro D.; Rajan R.; Nizam A.; Sugunan S., “Investigation on the phase transformation and lattice parameters of Sn 2+ , Cu 2+ , La 3+ and Ce 4+ ions doped titania: characterization and solar light activity study,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 22, 2025, https://archives.christuniversity.in/items/show/16719.