Ben Jose - Academia.edu (original) (raw)
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Graduate Center of the City University of New York
UERJ - Universidade do Estado do Rio de Janeiro / Rio de Janeiro State University
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Papers by Ben Jose
Journal of materials science. Materials in electronics, 2024
Materials Letters, 2021
Abstract Polypyrole (Ppy) -Silver nanocomposite samples have been synthesised by chemical oxidati... more Abstract Polypyrole (Ppy) -Silver nanocomposite samples have been synthesised by chemical oxidative polymerisation. The characteristic peaks of face centered cubic (fcc) structure of silver in XRD confirmed its presence in Ppy. Shift in N-H stretching frequency observed in FTIR spectroscopy revealed the coordination of silver into Ppy. The photocatalytic activity of the samples was studied by photocatalytic degradation of the aqueous solution of methylene blue (MB) under sunlight. The presence of Ag in polypyrrole (Ppy) enhanced its photocatalytic activity with respect to the reported values which further increased on increasing the silver concentration.
IOP conference series, Feb 23, 2021
Cupric Oxide thin films were prepared and deposited on glass plate by double-dip method. The stud... more Cupric Oxide thin films were prepared and deposited on glass plate by double-dip method. The study was conducted on samples annealed at different temperatures. The deposited films showed poly crystalline nature with a preferred orientation of monoclinic structure along (111) plane. The thicknesses, as well as the refractive indices of all the films, were determined by using Near Normal Spectroscopic Reflectometry. Optical studies revealed a decrease in band gap with annealing temperature. The V-I graphs were found to be linear for a short-range when measured by two probe method. The thin films showed a resistivity of the order of kΩ-cm. An increase in electrical conductivity with temperature reveals the semiconducting nature of the thin films.
IOSR Journal of Applied Physics, 2013
Cupric oxide (CuO) nanoparticles were prepared by the chemical route by calcinations at a higher ... more Cupric oxide (CuO) nanoparticles were prepared by the chemical route by calcinations at a higher temperature from 300 o C to 400 o C. For the comparison transmission electron microscopy (TEM) and x-ray diffraction (XRD) measurements were made through JCPDS. There is good agreement between data produced by spectroscopy and the microscopic measurements.
Journal of materials science. Materials in electronics, 2024
Materials Letters, 2021
Abstract Polypyrole (Ppy) -Silver nanocomposite samples have been synthesised by chemical oxidati... more Abstract Polypyrole (Ppy) -Silver nanocomposite samples have been synthesised by chemical oxidative polymerisation. The characteristic peaks of face centered cubic (fcc) structure of silver in XRD confirmed its presence in Ppy. Shift in N-H stretching frequency observed in FTIR spectroscopy revealed the coordination of silver into Ppy. The photocatalytic activity of the samples was studied by photocatalytic degradation of the aqueous solution of methylene blue (MB) under sunlight. The presence of Ag in polypyrrole (Ppy) enhanced its photocatalytic activity with respect to the reported values which further increased on increasing the silver concentration.
IOP conference series, Feb 23, 2021
Cupric Oxide thin films were prepared and deposited on glass plate by double-dip method. The stud... more Cupric Oxide thin films were prepared and deposited on glass plate by double-dip method. The study was conducted on samples annealed at different temperatures. The deposited films showed poly crystalline nature with a preferred orientation of monoclinic structure along (111) plane. The thicknesses, as well as the refractive indices of all the films, were determined by using Near Normal Spectroscopic Reflectometry. Optical studies revealed a decrease in band gap with annealing temperature. The V-I graphs were found to be linear for a short-range when measured by two probe method. The thin films showed a resistivity of the order of kΩ-cm. An increase in electrical conductivity with temperature reveals the semiconducting nature of the thin films.
IOSR Journal of Applied Physics, 2013
Cupric oxide (CuO) nanoparticles were prepared by the chemical route by calcinations at a higher ... more Cupric oxide (CuO) nanoparticles were prepared by the chemical route by calcinations at a higher temperature from 300 o C to 400 o C. For the comparison transmission electron microscopy (TEM) and x-ray diffraction (XRD) measurements were made through JCPDS. There is good agreement between data produced by spectroscopy and the microscopic measurements.