Construction of an electrochemical pH sensor using one-pot synthesis of a molybdenum diselenide/nitrogen doped graphene oxide screen-printed electrode
Sujittra Poorahong, Wipawee Oin, Saowaluk Buapoon, Supinya Nijpanich, David J. Harding, Mohamed Siaj
Abstract
over a wide pH range of 2-14. In addition, the pH sensor exhibited a remarkably stable response, high reproducibility, and selectivity. The sensor was used to measure the acidity or alkalinity of real food and beverage samples. The results for these samples showed a relative error of less than 10% compared with the results obtained with the commercial pH meter. The portable sensor produced by screen printing electrodes paves the way for the development of simple, cost-effective, real-time, and robust pH sensors for the pH analysis of various sample matrices for clinical diagnostics, biosensing, and cost-effective applications.
Topics & Concepts
GrapheneDiselenideMolybdenumElectrodeElectrochemistryOxideDopingMaterials scienceInorganic chemistryNitrogenNanotechnologyChemistryOptoelectronicsMetallurgyOrganic chemistrySeleniumPhysical chemistryElectrochemical sensors and biosensorsAnalytical Chemistry and SensorsElectrochemical Analysis and Applications