Taimur Athar
Abstract
With the help of facile single source molecular precursor the synthesis of CuAl2O4 nanopowder with well-defined structural framework was carried out via cost-effective soft–chemical approach with two and three coordination state around copper and Aluminum atom respectively. The synthesized nanoparticles ...
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With the help of facile single source molecular precursor the synthesis of CuAl2O4 nanopowder with well-defined structural framework was carried out via cost-effective soft–chemical approach with two and three coordination state around copper and Aluminum atom respectively. The synthesized nanoparticles were thoroughly characterized by using several physicochemical techniques such as XRD, SEM, TEM, thermal analysis, UV and FT-IR for structural, optical and morphological studies. With the adjustment of reaction parameters allows us for systematic tuning of particle size, shape as well as to control the other functional properties. It can be concluded that self-assembly is an integral part which take place by understanding the metal chemistry during synthetic approach and therefore help to opens a new exciting opportunities for better understanding the reaction conditions, growth and along its mechanistic approach which leads to fabrication of potential nanodevise in near future.
Shalini Singh; S. Adhikari;S. K. Sarkar; Apurav Guleria; M. C. Rath; A. K. Singh
Abstract
Cadmium selenide, CdSe nanomaterials were synthesized in microhetergenous media consisting of water-in-oil type microemulsions using the surfactant, cetyl trimethyl ammonium bromide (CTAB) and cyclohexane as the oil, under two different experimental conditions. In one set of experiments, the synthesis ...
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Cadmium selenide, CdSe nanomaterials were synthesized in microhetergenous media consisting of water-in-oil type microemulsions using the surfactant, cetyl trimethyl ammonium bromide (CTAB) and cyclohexane as the oil, under two different experimental conditions. In one set of experiments, the synthesis was carried out by normal chemical route at room temperature, named as green chemistry route. In another set, the synthesis was carried out through radiation-chemical route using 7 MeV electron beam using a linear electron accelerator (LINAC). In the previous case, the shape of CdSe nanomaterials was found to evolve from isotropic spherical to anisotropic rod like structures in lower w0 microemulsions with time. Similar observations were obtained in the case of CdSe nanomaterials synthesized via electron beam irradiation. The photoluminescence was found to be different in the CdSe nanomaterials formed by these two different routes. In the former case, the band gap photoluminescence was observed from the immediately produced nanomaterials, however with aging after a day there were two distinct band gap photoluminescence as well as trap state photoluminescence observed at room temperature. On the contrary, in the case of electron beam induced CdSe nanomaterials the trap state photoluminescence was always dominating irrespective of the aging.
