Active Cocatalysts: Brownmillerite‐Type Crystalline Ca₂FeCoO₅ Ultrasmall Particles with Single‐Nanometer Dimensions as an Active Cocatalyst for Oxygen Photoevolution Reaction (Part. Part. Syst. Charact. 5/2020)

Abstract

In article number 2000053, Etsushi Tsuji and co‐workers demonstrate a new method to synthesize brownmillerite‐type Ca2FeCoO5 ultrasmall particles with several nano‐metric dimensions on TiO2 nanoparticles using reverse micelles. The photocatalytic activity of TiO2 for oxygen evolution increases by loading of Ca2FeCoO5 ultrasmall particles with 5 nm size, whereas the activity decreases by loading of Ca2FeCoO5 with more than 15 nm size.