Green Synthesis of High Temperature Stable Anatase Titanium Dioxide Nanoparticles Using Gum Kondagogu: Characterization and Solar Driven Photocatalytic Degradation of Organic Dye
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Date
2019-12-04
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
The present study reports a green and sustainable method for the synthesis of titanium
dioxide (TiO2) nanoparticles (NPs) from titanium oxysulfate solution using Kondagogu gum
(Cochlospermum gossypium), a carbohydrate polymer, as the NPs formation agent. The synthesized
TiO2 NPs were categorized by techniques such as X-Ray Diffraction (XRD), Fourier transform infrared
(FTIR) spectroscopy analysis, Raman spectroscopy, scanning electron microscope- Energy-dispersive
X-ray spectroscopy (SEM-EDX), Transmission electron microscopy (TEM), High-resolution
transmission electron microscopy (HR-TEM), UV-visible spectroscopy, Brunauer-Emmett-Teller (BET)
surface area and particle size analysis. Additionally, the photocatalytic actions of TiO2 NPs were
assessed with regard to their ability to degrade an organic dye (methylene blue) from aqueous
solution in the presence of solar light. Various parameters affecting the photocatalytic activity of
the TiO2 NPs were examined, including catalyst loading, reaction time, pH value and calcination
temperature of the aforementioned particles. This green synthesis method involving TiO2 NPs
explores the advantages of inexpensive and non-toxic precursors, the TiO2 NPs themselves exhibiting
excellent photocatalytic activity against dye molecules.
Description
Subject(s)
titanium dioxide nanoparticles, green synthesis, gum kondagogu, methylene blue, photocatalysis