Catalytic degradation of organic pollutant by biosynthesized silver nanoparticles using Trigonella foenum-graceum L. leaves

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The usefulness of plant extracts in the green synthesis of silver nanoparticles (AgNPs) has received considerable interest because it is easy, environmentally benign, stable, and economical.The present study involved the biosynthesis of AgNPs using Trigonella foenum-graceum L. leaf extract.The different reaction conditions, such as the amount of leaf extract, temperature, concentration of silver nitrate (AgNO 3 ), pH, and reaction time, were optimized using a UV-Visible spectrophotometer.The average particle size, morphology, and elemental composition of the AgNPs were studied using UV-Vis spectroscopy, Particle size analyser (PSA), Field emission scanning electron microscopy coupled to Energy-dispersive X-ray spectroscopy (FESEM-EDX), X-ray diffraction (XRD), High resolution transmission electron microscopy (HRTEM) and Fourier transform infrared spectroscopy (FTIR).The average size of the AgNPs was 19 nm and they were spherical in shape.The efficacy of AgNPs as a catalyst was confirmed by the 13 min completion of the reduction of the organic pollutant p-nitrophenol (p-NP).The catalytic capabilities of AgNPs strongly support their use for the purification of contaminated water.