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KMID : 1024520200290121171
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Journal of the Environmental Sciences
2020 Volume.29 No. 12 p.1171 ~ p.1184
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Green Synthesis of Nanoparticles Using Extract of Ecklonia cava and Catalytic Activity for Synthetic Dyes
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Kim Beom-Jin
Song Woo-Chang
Park Sun-Young
Park Geun-Tae
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Abstract
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The green synthesis of inorganic nanoparticles (NPs) using biomaterials has garnered considerable attention in recent years because of its eco-friendly, non-toxic, simple, and low-cost nature. In this study, we synthesized NPs of noble metals, such as Ag and Au using an aqueous extract of a marine seaweed, Ecklonia cava. The formation of AgNPs and AuNPs was confirmed by the presence of surface plasmon resonance peaks in UV-Vis absorption spectra at approximately 430 and 530 nm, respectively. Various properties of the NPs were evaluated using characterization techniques, such as dynamic light scattering, transmission electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction analysis. Phytochemicals in the seaweed extract, such as phlorotannins, acted as both reducing and stabilizing agents for the growth of the NPs. The green-synthesized AgNPs and AuNPs were found to exhibit high catalytic activity for the decomposition of organic dyes, including azo dyes, methylene blue, rhodamine B, and methyl orange.
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KEYWORD
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Green synthesis, Silver nanoparticles, Gold nanoparticles, Ecklonia cava, Catalytic activity
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