title: Catalysis of nickel ferrite for photocatalytic water oxidation using [Ru(bpy)3]2+ and S2O8(2-).
abstract: Single or mixed oxides of iron and nickel have been examined as catalysts in photocatalytic water oxidation using [Ru(bpy)(3)](2+) as a photosensitizer and S(2)O(8)(2-) as a sacrificial oxidant. The catalytic activity of nickel ferrite (NiFe(2)O(4)) is comparable to that of a catalyst containing Ir, Ru, or Co in terms of O(2) yield and O(2) evolution rate under ambient reaction conditions. NiFe(2)O(4) also possesses robustness and ferromagnetic properties, which are beneficial for easy recovery from the solution after reaction. Water oxidation catalysis achieved by a composite of earth-abundant elements will contribute to a new approach to the design of catalysts for artificial photosynthesis.
authors.affiliation: Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science Technology Agency (JST), Suita, Osaka 565-0871, Japan.
authors.forename: Dachao
authors.initials: D
authors.lastname: Hong
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamada
authors.forename: Takaharu
authors.initials: T
authors.lastname: Nagatomi
authors.forename: Yoshizo
authors.initials: Y
authors.lastname: Takai
authors.forename: Shunichi
authors.initials: S
authors.lastname: Fukuzumi
mesh_terms: D002384:Catalysis; D005290:Ferric Compounds / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D017319:Photosensitizing Agents; D013431:Sulfates / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D009942:Organometallic Compounds; D017319:Photosensitizing Agents; D013431:Sulfates; C550717:nickel ferrite; C069025:sulfate radical; C415768:tris(2,2'-bipyridyl)ruthenium(II); D014867:Water; D009532:Nickel