Next generation of pure titania nanoparticles for enhanced solar-light photocatalytic activity

TiO 2 nanoparticles are renowned for its photocatalytic degradation. Herein, Oxygen-rich TiO 2 nanosphere and TiO 2 nanorods have been prepared by photon induced method (PIM). This facial preparation method is cost effective and produce pure anatase phased TiO 2 nanoparticles with high stability. Th...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2018-03, Vol.29 (5), p.4373-4381
Main Authors: Nagaraj, G., Dhayal Raj, A., Albert Irudayaraj, A.
Format: Article
Language:English
Subjects:
Anatase
Catalytic activity
Characterization and Evaluation of Materials
Chemistry and Materials Science
Dyes
Fourier transforms
Materials Science
Methylene blue
Nanoparticles
Nanorods
Nanospheres
Optical and Electronic Materials
Phase stability
Photocatalysis
Photodegradation
Powder injection molding
Titanium oxides
X ray photoelectron spectroscopy
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Summary:TiO 2 nanoparticles are renowned for its photocatalytic degradation. Herein, Oxygen-rich TiO 2 nanosphere and TiO 2 nanorods have been prepared by photon induced method (PIM). This facial preparation method is cost effective and produce pure anatase phased TiO 2 nanoparticles with high stability. The morphology of the prepared TiO 2 samples for various preparation times have been analyzed using HRTEM and HRSEM. As the preparation time is increased, a morphological transformation from nanorods to nanospheres is witnessed. The possible reason behind this transformation has also been discussed. The nature of the samples have been investigated using XRD, FTIR, PL, XPS and UV–Vis spectroscopy. The PIM prepared sample for 8 days show pure anatase phase stability even at a higher calcination temperature of 800 °C. This is correlated with the oxygen richness of the sample. A clear discussion regarding this enhanced phase stability is also presented here. Also, the photocatalytic activity of both the samples have been investigated through the degradation of methylene blue dye. The degradation of methylene blue under sunlight by pure TiO 2 nanosphere is quicker when compared with TiO 2 nanorods and Degussa P25. The reason for the enhanced photodegradation activity of pure TiO 2 nanospheres has also been discussed in detail.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-017-8386-0