title: Reactivity of methemoglobin immobilized on TiO2 nanoparticle films.
abstract: Facile demetallation occurs upon contact of the methemoglobin with a mesoporous TiO2 host in phosphate buffer media at pH 5.5 but not in acetate buffer media. As a result, voltammetric signals previously attributed to hemoglobin-based redox processes have to be re-interpreted.
authors.affiliation: Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
authors.forename: Elizabeth V
authors.initials: EV
authors.lastname: Milsom
authors.forename: Hayley A
authors.initials: HA
authors.lastname: Dash
authors.forename: A Toby A
authors.initials: AT
authors.lastname: Jenkins
authors.forename: Marcin
authors.initials: M
authors.lastname: Opallo
authors.forename: Frank
authors.initials: F
authors.lastname: Marken
mesh_terms: D000085:Acetates / Q000737:chemistry; D002021:Buffers; D004563:Electrochemistry; D004566:Electrodes; D053768:Metal Nanoparticles / Q000737:chemistry*; D008706:Methemoglobin / Q000737:chemistry*; D010084:Oxidation-Reduction; D010710:Phosphates / Q000737:chemistry; D016062:Porosity; D014025:Titanium / Q000737:chemistry*
chemical_list: D000085:Acetates; D002021:Buffers; D010710:Phosphates; C009495:titanium dioxide; D008706:Methemoglobin; D014025:Titanium