TY - JOUR TI - Cobalt oxide as a selective co-catalyst for water oxidation in the presence of an organic dye AU - Kinastowska, K. AU - Barroso, J. AU - Yate, L. AU - Pavlov, V. AU - Chuvilin, A. AU - Bartkowiak, W. AU - Grzelczak, M. T2 - Photochemical & Photobiological Sciences AB - In photobiocatalytical processes involving the simultaneous oxidation of water and reduction of specific organic molecules (e.g., cofactors), the lack of physical separation of the redox half-reactions adversely affects the product stability. This is largely because organic molecules are generally less stable within harsh oxidative environments. In general, surface co-catalysts are able to improve the selectivity of photocatalysts towards water oxidation. However, harsh oxidative environments reduce the chemical stability of the organic molecules. Herein, we show that the use of Co3O4 as a surface co-catalyst on silver orthophosphate improve water photo-oxidation in the presence of organic dye molecules, such as methylene blue, that typically exhibits susceptibility toward photodegradation. The presence of Co3O4 on the photocatalyst surface prevents the adsorption of the organic dye, thus reducing its degradation rate. These findings provide a promising scenario for the visible light-driven reduction of organic molecules using water as an electron donor. DA - 2017/12/06/ PY - 2017 DO - 10.1039/C7PP00320J DP - pubs.rsc.org VL - 16 IS - 12 SP - 1771 EP - 1777 J2 - Photochem. Photobiol. Sci. LA - en SN - 1474-9092 UR - https://pubs.rsc.org/en/content/articlelanding/2017/pp/c7pp00320j Y2 - 2018/11/19/10:39:12 ER -