Photocatalytic Water Oxidation with Layered Double Hydroxides
Sina Sadigh Akbari a, Ferdi Karadas a
a Bilkent University, Turkey, Ankara, Turkey
nanoGe Fall Meeting
Proceedings of nanoGe Fall Meeting19 (NGFM19)
#SolFuel19. Solar Fuel Synthesis: From Bio-inspired Catalysis to Devices
Berlin, Germany, 2019 November 3rd - 8th
Organizers: Roel van de Krol and Erwin Reisner
Poster, Sina Sadigh Akbari, 401
Publication date: 18th July 2019

Photocatalytic water splitting under irradiation of solar light has attracted considerable attention for the production of renewable hydrogen energy from water. The approach that involves linking a particle light absorber with a molecular catalyst combines the advantages of homogeneous and heterogeneous catalysis. Layered double hydroxides (LDHs) are a class of two dimensional materials which have been widely used in photocatalysis and dye-sensitised solar cell, due to their abundant active metal centers [1-3]. Inspired by the previous studies on colloidal systems, in this work, our efforts on coupling Prussian blue analogues (PBAs) as catalyst with other light-harvesting semiconductors such as layered-double hydroxides (LDHs) to achieve high performance water splitting systems. We have synthesized the visible-light responsive LDHs, such as NiTi-LDH and ZnCr-LDH. Various characterization techniques including XRD. XPS and SEM were used to investigate the structure of LDHs and PBAs. The photocatalytic activity of CoFe-PBA@LDH hybrid assemblies in the presence of sacrificial agent (0.1 mmol sodium persulfate) will be presented.

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