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The present paper involves the synthesis of bio-based Ag/TiO 2 nanocomposites using both dry and fresh leaf extracts of Averrhoa carambola L. as reducing, capping and stabilizing agents.The nanocomposites are characterized by UV-vis DRS, XRD, TEM and EDX spectroscopy.TEM analysis shows the formation of somewhat uniformly distributed AgNPs on the surface of TiO 2 .From the UV-vis DRS studies and band gap energy calculation, it is confirmed that Ag/TiO 2 DLE is more active than Ag/TiO 2 FLE.The photocatalytic activity of the Ag/TiO 2 nanocomposites prepared by both the leaf extracts was studied towards the degradation of methyl orange (MO).It was found that both FLE and DLE induced Ag/TiO 2 exhibited higher efficiency towards photocatalytic degradation of MO as compared to chemically prepared Ag/TiO 2. It was observed that DLE induced Ag/TiO 2 exhibited higher efficiency towards photocatalytic degradation of MO as compared to FLE induced Ag/ TiO 2.
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Mishra et al. (2020) studied this question.
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