Preparation of a high active photocatalyst, K_2La_2Ti_3O_10, by polymerized complex method and its photocatalytic activity of water splitting

A layered perovskite type oxide, K_2La_2Ti_3O_10, was prepared by a gel technique using the polymerized complex (PC) method. A single phase K_2La_2Ti_3O_10 was obtained by adding twice the potassium required for stoichiometry. The Ni–K_2La_2Ti_3O_10 catalyst prepared by the PC method exhibited a higher photocatalytic activity for decomposition of H_2O into H_2 and O_2 than that prepared by a conventional solid state reaction.

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