Photocatalytic Decomposition of Pure Water over NiO Supported on KTa(M)O3 (M = Ti4+, Hf4+, Zr4+) Perovskite Oxide

Photocatalytic decomposition of pure water on NiO supporting KTaO3 partially substituted with acceptor was investigated. Formation rate of H2 and O2 increased by partially substituting Ta with group 4 element. The increased photocatalytic decomposition activity by additives might be caused by a charge carrier annihilation.