Measuring local pH in electrochemistry
Mariana C. O. Monteiro, Marc T. M. Koper
Abstract
Localized pH measurements are important in various areas of electrochemistry, from corrosion to bio-electrochemistry and electrocatalysis. Different techniques are available to perform these measurements and offer numerous possibilities in terms of spatial and temporal resolution, sensitivity, and precision. In this brief review we present the recent progress made and summarize the main techniques available for localized pH measurements in electrochemistry such as scanning probe techniques (SECM, SICM, SIET), laser (confocal) fluorescence microscopy, rotating ring-disc electrode (RRDE) voltammetry, and infra-red spectroscopy, among others.
Topics & Concepts
Scanning electrochemical microscopyElectrochemistryCyclic voltammetryElectrocatalystVoltammetryNanotechnologyElectrodeMicroscopyChemistryConfocal laser scanning microscopyTemporal resolutionMaterials scienceAnalytical Chemistry (journal)OpticsBiomedical engineeringChromatographyPhysicsPhysical chemistryMedicineElectrochemical Analysis and ApplicationsAnalytical Chemistry and SensorsChemical and Physical Properties in Aqueous Solutions