Synthesis of Mesoporous TiO2−xNx Spheres by Template Free Homogeneous Co-precipitation Method and their Photo-catalytic Activity under Visible Light Illumination
IR@IMMT: CSIR-Institute of Minerals and Materials Technology, Bhubaneswar
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Title |
Synthesis of Mesoporous TiO2−xNx Spheres by Template Free Homogeneous Co-precipitation Method and their Photo-catalytic Activity under Visible Light Illumination
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Creator |
Parida, K M
Naik, B |
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Subject |
Mesoporous Materials
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Description |
The article presents preparation, characterization and catalytic activity evaluation of an efficient nitrogen
doped mesoporous titania sphere photo-catalyst for degradation of methylene blue (MB) and methyl orange (MO) under visible light illumination. Nitrogen doped titania was prepared by soft chemical route i.e. template free, low and controlled homogeneous co-precipitation from titanium oxysulfate sulfuric acid complex hydrate, urea, ethanol and water. The molar composition of TiOSO4 to urea was varied to
prepare different atomic % nitrogen doped titania. Mesoporous anatase TiO2−xNx spheres with average
crystallite size of 10 nm and formation of titanium oxynitride center were confirmed from HRTEM, XRD and XPS study. UV–vis DRS showed a strong absorption in the range of 400–500 nm which supports its use in visible spectrum of light. Nitrogen adsorption–desorption study supports the porous nature of the doped material. All the TiO2−xNx samples showed higher photo-catalytic activity than Degussa P25 and undoped mesoporous titania. Sample containing around one atomic % nitrogen showed highest activity
among the TiO2−xNx samples.
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Publisher |
Elsevier
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Date |
2009
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://eprints.immt.res.in/49/1/Parida1.pdf
Parida, K M and Naik, B (2009) Synthesis of Mesoporous TiO2−xNx Spheres by Template Free Homogeneous Co-precipitation Method and their Photo-catalytic Activity under Visible Light Illumination. Journal of Colloid and Interface Science, 333 (1). pp. 269-276. |
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Relation |
http://dx.doi.org/10.1016/j.jcis.2009.02.017
http://eprints.immt.res.in/49/ |
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