title: Simple photosystem II water oxidation centre analogues in visible light oxygen and H+ generation.
abstract: Calcium manganese oxide nanoparticles for application in water oxidation are synthesized by combination with a carboxylated biopolymer stabilizing agent to form very simple but effective analogues of the photosynthetic PSII oxygen evolving complex. The relative efficiency of these materials for production of O(2)  and protons under visible light-promoted reactions is evaluated and prolonged reaction lifetimes are observed.
authors.affiliation: School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
authors.forename: Yi-Yeoun
authors.initials: YY
authors.lastname: Kim
authors.forename: David
authors.initials: D
authors.lastname: Williams
authors.forename: Fiona C
authors.initials: FC
authors.lastname: Meldrum
authors.forename: Dominic
authors.initials: D
authors.lastname: Walsh
mesh_terms: D002118:Calcium / Q000737:chemistry; D002384:Catalysis; D008027:Light; D008345:Manganese / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry; D046529:Microscopy, Electron, Transmission / Q000379:methods; D008968:Molecular Conformation; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods; D010100:Oxygen / Q000737:chemistry*; D045332:Photosystem II Protein Complex / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011522:Protons; D012993:Solar Energy; D014867:Water / Q000737:chemistry*
chemical_list: D045332:Photosystem II Protein Complex; D011108:Polymers; D011522:Protons; D014867:Water; D008345:Manganese; D010100:Oxygen; D002118:Calcium