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Hassan A. Alshamsi
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Medicine & Pharmacology

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Photo Catalytic Degradation of Reactive Blue 4 Dye using Hydrothermal Synthesized ZnO Nanoparticles Hassan A. Alshamsi
Journal of Global Pharma Technology Volume 09 Issue 12
Publisher : Journal of Global Pharma Technology

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Abstract

The research reports the preparation of zinc oxide nanoparticles (ZnO NPs) using hydrothermal process. Several techniques  were used to characteristic ZnO NPs which included x-ray diffraction (XRD), scanning electron microscopy (SEM) ,transmission electron microscopy (TEM),atomic force microscope (AFM),and Fourier-transform I Infrared Spectroscopy (FTIR).Also, the research included photo catalytic activity of ZnO NPs for Reactive Blue 4 dye  removal from aqueous solution under light irradiation  from 100 W . It was shown that the use of ZnO as photo catalyst have acceptable photo catalytic activity for degradation of dye. It has been found that maximum percentage removal of dye was achieved at 0.8g/L ZnO mass, pH 6, temperature 303K and dye concentration 20 ppm. The photo catalytic degradation was monitored by measuring the absorbance of the dye at its λ max using UV-Vis spectroscopy.Keywords: Hydrothermal, ZnO, nanoparticles, Photo catalyst, dye, SEM.
Green Synthesis of Reduced Graphene Oxide Using L-Cysteine as Reductant Hassan A. Alshamsi
Journal of Global Pharma Technology Volume 10 Issue 05: (2018) May2018
Publisher : Journal of Global Pharma Technology

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Abstract

Graphene-derived materials have been studied in many applications due to its excellent electrical, mechanical, and thermal properties .There remains a real need for the easy, eco-friendly and scalable preparation method of graphene due to various potential applications. Chemical reduction is the most versatile method for the large scale production of graphene. Here we report the operating conditions for a one-step, economical and green synthesis method for the reduction of graphene oxide using a bio molecule L-cysteine under mild reaction conditions. Characterizations of the resulting product have been done by thermo-gravimetric analysis, X-ray diffraction, FTIR, UV-visible spectroscopy, EDX spectrum and the morphology of the synthesized reduced graphene oxide (rGO) was examined by AFM, SEM and TEM.
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