試題詳解

複選題
39. About the photocatalyst of TiO₂, which are correct statements?
(A) TiO₂ photocatalysts are at nanoscale.
(B) TiO₂ photocatalysts exhibit radicals after light excitation to achieve sterilization.
(C) TiO₂ can be used as the material for water proof.
(D) TiO₂ is one of the important materials in the applications of solar cells.
(E) TiO₂ is very toxic and hence it is not allowed to be used in the food additives.