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Synthesis and characterization of rice grains like Nitrogen-doped TiO 2 nanostructures by electrospinning-photocatalysis

Publication Type : Journal Article

Thematic Areas : Medical Sciences

Publisher : Materials Letters

Source : Materials Letters, Volume 65, Number 19-20, p.3064-3068 (2011)

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Keywords : Alizarin Red, Anthraquinone dye, Average diameter, Band gaps, Doping levels, Electrospinning, Electrospinning method, Grain (agricultural product), Ketones, N-Doping, Nanostructures, Nitrogen-doped, Photocatalysis, Photoelectricity, Photoelectron spectroscopy, Photons, Powder X ray diffraction, Rice grains, Spherical particle, TiO, Titanium, Titanium dioxide, X ray diffraction, X ray photoelectron spectroscopy

Campus : Kochi

School : School of Medicine

Department : Biostatistics

Year : 2011

Abstract : Rice grain-shaped Nitrogen-doped titanium dioxide (N-TiO2) nano/mesostructures were fabricated through a combination of sol-gel and electrospinning methods. As-spun nanofibers were continuous and upon thermal treatment at 500° C for 1 h in air, the continuous fibers break into rice grain-shaped TiO2 nanostructures of average diameter 50-80 nm. The nanostructures were characterized by spectroscopy, microscopy and powder X-ray diffraction. The rice grains consist of spherical particles of average diameter of ∼ 18 nm and with N doping, their average diameters decrease from ∼ 18 to ∼ 12 nm. The presence of N in the TiO2 lattice was confirmed by X-ray photoelectron spectroscopy (XPS). The band-gap of TiO2 reduced from 3.19 eV to 2.83 eV upon increasing doping level of N from 0% to 5% (w/w), respectively. The N-TiO2 rice grains showed an enhanced UV light-assisted photocatalysis compared to pure TiO2 in the photodegradation of Alizarin Red S dye, an industrially important anthraquinone dye. © 2011 Elsevier B.V. All Rights Reserved.

Cite this Research Publication : V. J. Babu, A. S. Nair, Peining, Z., and Ramakrishna, S., “Synthesis and characterization of rice grains like Nitrogen-doped TiO 2 nanostructures by electrospinning-photocatalysis”, Materials Letters, vol. 65, pp. 3064-3068, 2011.

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