Novel CeO2-based screen-printed potentiometric electrodes for pH monitoring

► Applicability of CeO2-based oxides (CeO2, Ce0.8Sm0.2O2 and Ce0.8Zr0.2O2) for pH monitoring. ► Screen-printing process: assembling reproducible electrodes and rapidly generating data sets. ► Impedance measurements: investigation of the elementary phenomena at the interfaces. ► Ce0.8Zr0.2O2-based SPEs: robust and sensitive for continuous measurements. ► Durably designed Ce0.8Zr0.2O2-based electrode: ideally suited for pH measurements in radioactive waste repositories.