含钛高炉渣催化剂光催化降解亚甲基蓝

Photocatalytic Degradation of Methylene Blue with Blast Furnace Slag Containing Titania

实验制备了含钛高炉渣光催化剂,负载于玻璃表面,通过对水溶液中染料亚甲基蓝的降解实验,研究了含钛高炉渣的光催化效果,评价了含钛高炉渣光催化剂与热处理温度、溶液的pH值、不同光源、空气流量的影响关系.结果表明,经处理的含钛高炉渣催化剂具有光催化性,经600oC处理的催化剂的光催化性最好,适当的pH值与空气通入量、提高紫外光强度及缩短光源的波长均有助于染料的降解.

Experimental studies have been made on photocatalytic degradation of methylene blue in an aqueous solution by means of treated blast furnace slags containing TiO2. Dependences of photocatalytic degradation on pH of solution, strength of light, air flow rate were discussed in detail. The results indicate that the reaction rate was increased with increasing UV light intensity, advisable pH value and proportionate air flow rate. The degradation rate of dye by 254 nm UV light was dramatically higher than that by 365 nm UV light,and the best degradation effect was obtained after heat-treated at 600oC for slag.