University of Sharjah, UAE
Title: Starch capped silver Nanoparticles as colorimetric sensor for hydrogen peroxide recognition in aqueous medium
Biography: Abdelaziz Elgamouz
In the present study, starch capped silver nanoparticles (AgNP) were synthesized successfully and characterized by using fourier transform infrared spectroscopy, scanning electron microscopy, dynamic light scattering and energy-dispersive X-ray Spectroscopy. The nanoparticles were used for the sensing of hydrogen peroxide based on a colorimetric technique. The nanoparticles were synthesised in a one pot reactor using AgNO3 as Ag source and sodium borohydride (NaBH4), as reducing agent. The silver catalytic ability for the decomposition of hydrogen peroxide was assessed using different concentration of AgNP, pH effect, temperature effect and different loads of hydrogen peroxide. The yellow-greenish colour of the silver nanoparticles solution was found to change gradually to a transparent solution.