Thesis & Dissertations

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https://hdl.handle.net/20.500.14540/12

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Browsing Thesis & Dissertations by TU Affiliated Institute "Amrit Campus, Lainchaur"

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    GREEN SYNTHESIS OF SILVER/ZINC OXIDE NANOCOMPOSITES USING LEAF EXTRACT OF DESMOSTACHYA BIPINNATA (KUSH) AND STUDY OF ITS PHOTOCATALYTIC ACTIVITIES
    (Amrit Campus, 2024-10-28) Anita Bhattarai; Ramesh
    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.