“…These advances would be deepened by a better understanding of the rich photochemistry we outline below. 15–17 In this review, we summarize recent developments of CeO 2 -based photocatalysts, clarify fundamental optical properties, provide fresh computational insights, and review common reactions studied. We will also discuss the extensive efforts in sensitizing CeO 2 to visible light through morphological modifications, doping, or plasmonic sensitization, aiming to identify trends across many application spaces.…”