| 摘要 |
PURPOSE: To provide an additive group for limiting much the electric charge rebinding reaction within a catalyst and reactivating the reaction during cleaning of gas, waste gas, steam and water by means of the catalyst. CONSTITUTION: In a cleaning method by means of the photocatalytic reaction carried out on the surface of a semiconductor oxide, particularly titanium dioxide, by energetic action of short wave-length light according to the floating bed or fixed bed principle or in a cleaning method of a catalyst from a mineralizing product formed by means of photocatalytic action, a semiconductor oxide is (a) added with at least one liq. or solid, inorg. acid, alkali, salt or hydrolysate, or (b) doped with at least one inorg. halogen compd. except for pure fluorine compd. as a halogen group forming agent, or (c) doped with at least one agent having combined properties and functions of (a) and (b). |
