Green synthesis of silver nanoparticles using marine sponge <i>Axinella sinoxia</i>

Abstract

Silver nanoparticles synthesis using dry and fresh marine sponge <i>Axinella sinoxia</i>. Experimental parameters such as time duration, pH, and temperature are studied. Optimizations for silver nanoparticles were carried out. The optimum syntheses of silver nanoparticles were achieved within 4 hours at pH 8.5, 70˚C and 1mM AgNO₃. Characterizations of silver nanoparticles were applied based on UV-Vis spectrophotometry around 420 nm .The sizes of synthesized nanoparticles (23-38nm) were confirmed by scanning electron microscopy (SEM). X-ray diffraction (XRD) crystallography expounded the silver nanoparticles crystalline nature. Fourier transform infrared spectroscopy (FT-IR) shows that the functional groups are hydroxyl, carbonyl, amide, amine, alkyl halide, and phenolic compounds of extract of <i>Axinella sinoxia</i> are entangled in the reduction of aqueous silver nanoparticles. This method of Ag-NPs synthesis does not use any toxic reagents and thus has potential for use in biomedical, pharmaceutical and agricultural application.