| 摘要 |
<p>A compound having optical activity and the use thereof; a composite material exhibiting photocatalytic activity under an ultra-violet light or a visible light, characterized in that it comprises a photocatalyst such as titanium dioxide and a peroxide in a solid state; and a pasteurization system comprising a material exhibiting photocatalytic activity under an ultra-violet light or a visible light; an artificial tooth cleaning agent comprising a material exhibiting photocatalytic activity under an ultra-violet light or a visible light.</p> |
