The
photocatalytic O2-production activity (52 μmol/h) of the two kinds
of single crystal structure TiO2 (anatase and rutile) is better than
ST-31 sample (29 μmol/h). Therefore, the sacrificial reagent solu-
tions significantly improve the photocatalytic activity of TiO2
samples. While the H2/O2 yield rate is not stoichiometric, the
reason may be the different charge transfer and the different ac-
tive sites of hydrogen production and the oxygen production.