Dung Duonghong

Colloidal TiO2 particles as oxygen carriers in photochemical water cleavage systems

By using the redox indicators o-dianisidine and o-toluidine as regents for quantitative analysis, it is shown that in colloidal TiO2–Pt dispersions surface-bound peroxo titanium complexes are formed during photolytic water cleavage in closed systems and as aresult of oxygen photo-uptake.

Efficient redox catalysis by RuO2 in the generation of oxygen and bromine from aqueous bromate solutions

Abstract Ruthenium dioxide deposited onto TiO2 particles catalyzes vigorous reduction of bromate ions to bromine (or bromide) by water and simultaneous generation of stoichiometric amounts of oxygen. The oxygen generated in the reaction arises from water and not from bromate molecules.