| abstract |
PROBLEM TO BE SOLVED: To provide an inexpensive glass material for supporting a photocatalyst, in which impurities do not diffuse into a photocatalyst, and thus photocatalytic activity does not deteriorate. An example, the composition of the glass material for a photocatalyst carrying, in weight percentages, the SiO 2 30~70%, Al 2 O 3 1-30%, MgO 0-20%, CaO 0-20 %, SrO 0-20%, BaO 0-40%, ZnO 0-20% 0-10% of Li 2 O, the Na 2 O 0 to 1 0% K 2 O 0-10% 0-10% of Cs 2 O, Li 2 0 to 10% of O + Na 2 O + K 2 O + Cs 2 O, MgO + CaO + SrO + BaO + ZnO + Li 2 O + Na 2 O + The K 2 O + Cs 2 O is a composition containing 0.1 to 65%. |