Abstract

A simple, room-temperature synthesis approach is reported for obtaining metal-doped titania nanospheres to achieve the highly efficient visible-light-driven photocatalyst. A possible explanation of the photodegradation mechanism and the relationship between behavior of photogenerated charges and photocatalytic reactions were discussed. Morever, we find that the size of nanospheres can be easily tuned not only by changing the concentration of metal ions, but also by varying the metal element species. The probable formation mechanism has been discussed in detail which will initiate new preparation method of photocatalysts for synthesizing TiO2 nanospheres meaningfully.

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