A Study on pH sensing property of Carboxymethyl guar gum /Silver Nanocomposites

Abstract

Some metal nanoparticles have been used as the colorimetric gauges for estimating solution pH and other sensing properties. This application of thesemetal nanoparticles is due to localized Surface Plasmon (LSP) or the Surface Plasmon Resonance. This study describes the pH sensing property of Carboxymethyl guar gum/silver nanocomposites (CMGG/Ag NC). For this CMGG/Ag NC was synthesized by the method mention in our previous paper. The pH sensing property of the NC was studied by using UV-visspectrophotometer. An optical and visual change in the CMGG/Ag NC solutionwas analysed with the change in pH range from 1-14. The results show that CMGG/Ag NC have a nice ability for pH sensing applications at roomtemperature.