Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/1744
Title: STRUCTURAL, MORPHOLOGICAL, OPTICAL AND BIOLOGICAL PROPERTIES OF PURE ZNO AND AGAR/ZINC OXIDE NANOCOMPOSITES
Authors: Magesh G
Bhoopathi G
Nithya N
Arun A P
Ranjith Kumar E
Keywords: Bionanocomposites
Polysaccharide
Antibacterial activity
Issue Date: 1-Oct-2018
Publisher: Elsevier
Abstract: In this work, ZnO nanoparticles were prepared by in situ chemical precipitation method in the presence of Agar biopolymer. The influences of Agar concentrations on the structural, morphological and optical properties of ZnO have been investigated. The XRD pattern of Pure ZnO and Agar/ZnO nanocomposites indicates the hexagonal wurtzite phase of ZnO. The crystallite size of pure ZnO and Agar/ZnO nanocomposites was found to be in the range of 35.5 to 19.73 nm. Pure ZnO and Agar/ZnO nanocomposites showed nanospheroid and nanopaddy shaped morphology from FESEM studies. The interplanar distance observed from the HRTEM image confirms the plane of the prepared material. The elemental compositions of the samples were characterized by EDX. The optical properties of Pure ZnO and Agar/ZnO nanocomposites were characterized by UV, FTIR and PL. The band gap of Agar/ZnO nanocomposites were varied with the Agar concentration. Oxygen vacancy induced photoluminescence of ZnO are observed and its intensity is found to be increased linearly with the Agar concentration. The antibacterial activity of ZnO and Agar/ZnO nanocomposites was evaluated by disc diffusion method against Gram-positive (B.subtilis) and Gram-negative (P. aeruginosa) bacteria. The cytotoxicity of Agar/ZnO nanocomposites was studied against Normal (L929) and Breast cancer cell line (MB231). The result of this investigation reveals that the Agar/ZnO nanocomposites deliver a dose dependent toxicity in normal and cancer cell line.
URI: https://www.sciencedirect.com/science/article/pii/S0141813018310845
http://localhost:8080/xmlui/handle/123456789/1744
ISSN: 0141-8130
Appears in Collections:International Journals



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