Publication Type:

Journal Article


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



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


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.


cited By 27

Cite this Research Publication

V. J. Babu, Nair, A. S., 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.