GREEN SYNTHESIS OF SILVER/ZINC OXIDE NANOCOMPOSITES USING LEAF EXTRACT OF DESMOSTACHYA BIPINNATA (KUSH) AND STUDY OF ITS PHOTOCATALYTIC ACTIVITIES
Date
2024-10-28
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Amrit Campus
Abstract
Removing organic pollutants including textile waste solution and dyes has become an essential
requirement for maintaining a secure and healthy environment. Therefore, the present study deals
with the synthesis of ZnO and Ag/ZnO nanocomposites using the leaf extract of Desmostachya
bipinnata. The leaf extract of Desmostachya bipinnata contained a different bio-active
compound that serves the dual purpose of acting as stabilizing and reducing agents. Out of
various methods, green synthesis has been extensively employed for its simplicity, low-cost, and
eco-friendly nature. The characterization of the as-synthesized ZnO and Ag/ZnO
nanocomposties were subjected to ultra violet visible (UV-vis) spectroscopy, Fourier Transform
Infrared (FTIR) spectroscopy, X-ray diffraction (XRD). XRD pattern revealed the crystalline
nature of nanoparticles. The crystallite size of Ag/ZnO was found to be 12-14 nm, according to
Debye Scherer formula. The synthesized NPs and NCs were used for the catalytic
photodegradation of Methylene blue (MB). The MB was degraded at room temperature under
exposure to UV light. The degradation efficiency of ZnO, and 25 % Ag/ZnO were found to be 79
% and 85 %, respectively. Therefore, it was found that Ag/ZnO nanocomposites have potential
to degrade MB as organic dye, and can be used for wastewater treatment.
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