The Effect of Reduction on the Adsorptive Behaviour of the TiO2/Water Interface | Zendy

V. Antonucci | Zendy; A.S. Aricò | Zendy; N. Giordano | Zendy; P.L. Antonucci | Zendy

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The Effect of Reduction on the Adsorptive Behaviour of the TiO₂/Water Interface

Author(s) -

V. Antonucci,

A.S. Aricò,

N. Giordano,

P.L. Antonucci

Publication year - 1989

Publication title -

adsorption science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.682

H-Index - 36

eISSN - 2048-4038

pISSN - 0263-6174

DOI - 10.1177/026361748900600201

Subject(s) - chemistry , adsorption , potentiometric titration , electrochemistry , stoichiometry , oxide , inorganic chemistry , diffraction , analytical chemistry (journal) , electrode , chromatography , organic chemistry , optics , physics

The effect of mild reduction treatment on TiO 2 surfaces has been investigated by the ZPC (zero point of charge) potentiometric technique. Different extents of reduction result in a series of oxides distinguished either by their adsorption characteristics or electrochemical properties. Non-stoichiometric surface oxide formation has been demonstrated by X-ray diffraction and flat-band potential (V fb ) measurements. The generation of surface states with essentially acid–base characteristics has been shown to be a determining factor in the photo-oxidation–photodecomposition of water. A number of hypotheses relating to the nature of the adsorption-determining sites have been advanced.

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