Nikhil Ranjan Jha - Academia.edu (original) (raw)
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Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur
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Papers by Nikhil Ranjan Jha
International Journal of Luminescence & its applications, 2017
The present paper reports the Photoluminescence of Eu 2+ electronic transition of Y2O3:Eu Nanopho... more The present paper reports the Photoluminescence of Eu 2+ electronic transition of Y2O3:Eu Nanophosphor. The samples are prepared by combustion synthesis route. Urea is employed as fuel in this synthesis method. XRD results of samples were found to have cubic nanocrystalline structure ranging from 12-65nm which resembles with the TEM results. Research work explores the PL emission of 425nm corresponding to 374nm excitation of Y2O3:Eu 2+ Nanophosphor. Paper reports the effect of annealing temperature on PL intensity of Y2O3:Eu 2+ phosphor. 1931 CIE coordinates shows Eu 2+ transition of Blue emission corresponding to coordinates x=0.1703, y=0.0057.
Y2O3:Eu nanophosphors are prepared from different synthesis viz. Combustion synthesis, Precipitat... more Y2O3:Eu nanophosphors are prepared from different synthesis viz. Combustion synthesis, Precipitation Method, Sol-Gel. The samples are annealed from 600-14000C temperature. Effect of Temperature on luminescence intensity of Europium Doped Y2O3 phosphor prepared from different synthesisroutes is studied in the presented paper. Prepared samples are found to have monoclinic structure when compared with JCPDS standard data. The luminescence intensity increases with the increase of particle size and is affected by synthesis route. Eu doped Y2O3 particle shows sharp emission at 611nm at UV excitation. The samples are excited with different UV wavelength and maximum emission intensity is found when excited with 234nm wavelength. Powder X-Ray Diffraction (XRD) results indicated that high temperature leads to increase in the particle size. TEM photographs show the agglomeration of the samples at higher temperature.
Chocolate industry is among the most polluting of the food industries in regard to its large wate... more Chocolate industry is among the most polluting of the food industries in regard to its large water consumption. Chocolate is one of the major industries causing water pollution. Considering the increased milk demand, the Chocolate industry in India is expected to grow rapidly and have the waste generation and related environmental problems are also assumed increased importance. Poorly treated wastewater with high level of pollutants caused by poor design, operation or treatment systems creates major environmental problems when discharged to the surface land or water. Various operations in a Chocolate industry may include pasteurization, cream, cheese, milk powder etc. Considering the above stated implications an attempt has been made in the present project to evaluate one of the Effluent Treatment Plant (ETP) for Chocolate waste. Samples are collected from three points; Collection tank (CT), outflow of Anaerobic Contact Filter (ACF) and Secondary clarifier (SC) to evaluate the perfo...
International Journal of Luminescence & its applications, 2017
The present paper reports the Photoluminescence of Eu 2+ electronic transition of Y2O3:Eu Nanopho... more The present paper reports the Photoluminescence of Eu 2+ electronic transition of Y2O3:Eu Nanophosphor. The samples are prepared by combustion synthesis route. Urea is employed as fuel in this synthesis method. XRD results of samples were found to have cubic nanocrystalline structure ranging from 12-65nm which resembles with the TEM results. Research work explores the PL emission of 425nm corresponding to 374nm excitation of Y2O3:Eu 2+ Nanophosphor. Paper reports the effect of annealing temperature on PL intensity of Y2O3:Eu 2+ phosphor. 1931 CIE coordinates shows Eu 2+ transition of Blue emission corresponding to coordinates x=0.1703, y=0.0057.
Y2O3:Eu nanophosphors are prepared from different synthesis viz. Combustion synthesis, Precipitat... more Y2O3:Eu nanophosphors are prepared from different synthesis viz. Combustion synthesis, Precipitation Method, Sol-Gel. The samples are annealed from 600-14000C temperature. Effect of Temperature on luminescence intensity of Europium Doped Y2O3 phosphor prepared from different synthesisroutes is studied in the presented paper. Prepared samples are found to have monoclinic structure when compared with JCPDS standard data. The luminescence intensity increases with the increase of particle size and is affected by synthesis route. Eu doped Y2O3 particle shows sharp emission at 611nm at UV excitation. The samples are excited with different UV wavelength and maximum emission intensity is found when excited with 234nm wavelength. Powder X-Ray Diffraction (XRD) results indicated that high temperature leads to increase in the particle size. TEM photographs show the agglomeration of the samples at higher temperature.
Chocolate industry is among the most polluting of the food industries in regard to its large wate... more Chocolate industry is among the most polluting of the food industries in regard to its large water consumption. Chocolate is one of the major industries causing water pollution. Considering the increased milk demand, the Chocolate industry in India is expected to grow rapidly and have the waste generation and related environmental problems are also assumed increased importance. Poorly treated wastewater with high level of pollutants caused by poor design, operation or treatment systems creates major environmental problems when discharged to the surface land or water. Various operations in a Chocolate industry may include pasteurization, cream, cheese, milk powder etc. Considering the above stated implications an attempt has been made in the present project to evaluate one of the Effluent Treatment Plant (ETP) for Chocolate waste. Samples are collected from three points; Collection tank (CT), outflow of Anaerobic Contact Filter (ACF) and Secondary clarifier (SC) to evaluate the perfo...