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Raman Shifts Study of Fabricated Nitrogen Nano-fertilizers

Journal article published in 2016 by A. Manikandan, K. S. Subramanian
This paper is available in a repository.
This paper is available in a repository.

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Preprint: policy unknown
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Postprint: policy unknown
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Published version: policy unknown

Abstract

s Recent developments of nanotechnology gained importance in agricultural research. Nano porous zeolites (nano-zeolite) are aluminosilicates and its unique diffusion, ion exchange with catalytic properties to be exploited in environmental applications. In our study, nano-zeolite was utilized for fabrication of nano-fertilizer carrying N which is and referred as nano-zeourea. Different characterisation techniques of nanomaterials provided major contributions to the development of nano science and technology in agriculture applications. However, Raman spectroscopy is a suitable non-destructive technique for in situ study of molecules structural information and assesses the changes in the bond polarizing ability with substitution reactions. The main objective was to study the structural pattern changes of nano-zeolite after impregnation with urea. Raman Shifts were measured in solid, powdered, dried samples of nano-zeolite and nano-zeourea using Raman Spectroscopy (R-3000 QE TM) at room temperature under dark conditions. Chemo-metric and data interpretation analysis of spectral shifts done by combination approach of empirical and tabular data of published research papers. It revealed marked differences in finger prints of nano-zeolite structure with highest SiO4 containing different alkaline ions along with nine bands at 395, 456, 518, 570, 806, 1108, 1150, 1458 and 1643 cm-1. The Raman Shifts at 1458 cm-1 are considered as CH2 bend frame work bands. On impregnation nano-zeourea fertilizer reflections with eight bands and were observed at 458, 520, 587, 806, 851, 1008, 1458 and 1646 cm-1. The bands 400 to 600 cm-1 are strong structural vibrations of TO -T (T=Al, Si) of both nanomaterials. However the shifts present at 1646 cm-1 by the bending modes C=N on nano-zeourea. Interactions of amine group of urea and nano-zeolite formed and produced vibrations .The hydrogen and oxygen bonding changed the functional groups peak of nano-zeourea. Shifts in spectral bands confirmed that the N loaded on nanoporous structures. Our study suggests that Raman Spectroscopy is a potential to study the nutrient adsorption pattern in nano-fertilizers.