catalyst composite includes a mixture of photocatalyst particles having a photocatalytic function with cement as a less degradative adhesive adhered on a substrate.US6475275Oct 21, 1999Nov 5, 2002Isolatek InternationalCement compositionUS6498000Jun 27, 2001Dec 24, 2002Ishihara Sangyo Kaisha, Ltd.Substrate having particles of a photocatalyst such as tio2, adhered on via a less degradative adhesive