One step synthesis of polyvinylpyrrolidone coated silver nanoparticles for the detection of hydrogen peroxide

Abstract

In this present work silver nanoparticles were synthesized by the reduction of silver nitrate using D-Glucose and starch by microwave heating. Polyvinylpyrrolidone (PVP) is used as capping agent for the silver nanoparticles. UV- visible spectroscopy is used for the characterization study of the starch stabilized silver nanoparticle while the morphology is determined by transmission electron microscopy. The crystallinity is determined by using X-ray Diffraction (XRD). The prepared silver nanoparticles were used for the optical detection of hydrogen peroxide using UV- vis Spectrophotometer. PVP prevents silver nanoparticles from agglomeration. The optimized silver nanoparticle was stable for long time. As Nanoparticle exhibit catalytic activity it reduces the hydrogen peroxide. The degradation of silver nanoparticles, induced by decomposition of hydrogen peroxide, causes a change in the absorbance depending on the concentration of H2O2. The decomposition of hydrogen peroxide is characterized using UV-visible spectroscopy. Calibration graph provide good sensitivity and linear response. This method was used to detect Hydrogen peroxide in the range from 20 µL/mL to 280 µL/mL.