Different Photostability of BiVO<sub>4</sub> in Near-pH-Neutral Electrolytes
Siyuan Zhang, Ibbi Y. Ahmet, Se‐Ho Kim, Olga Kasian, Andrea M. Mingers, Patrick Schnell, Moritz Kölbach, Joohyun Lim, Anna Fischer, Karl J. J. Mayrhofer, Serhiy Cherevko, Baptiste Gault, Roel van de Krol, Christina Scheu
Abstract
employing an illuminated scanning flow cell. We demonstrate that decrease in photocurrents alone does not reflect the degradation of photoelectrodes. Changes in dissolution rates correlate to the evolution of surface chemistry and morphology. The correlative measurements on both sides of the liquid-semiconductor junction provide quantitative comparison and mechanistic insights into the degradation processes.
Topics & Concepts
ElectrolyteChemistryInorganic chemistryMaterials scienceElectrodePhysical chemistryAdvanced Photocatalysis TechniquesGas Sensing Nanomaterials and SensorsCatalytic Processes in Materials Science