CeO_(2)-钢渣复合凝胶材料的制备及其光催化降解性能研究

Preparation and Photocatalytic Degradation of CeO_(2)-steel Slag Composite Gel Material

本实验钢渣为原料,通过负载CeO_(2)制备了碱激发钢渣复合凝胶材料,对原钢渣和碱激发钢渣进行了X衍射图谱对比,发现碱激发钢渣中的非凝胶相衍射峰减弱或消失,通过测量对相同浓度甲基橙溶液的吸光度,计算其对甲基橙染料的去除率。最后对比确定出了最佳制备配比,在40 gNH_(4)+E型钢渣复合胶凝材料中加入16 gCe(NO_(3))_(3)充分复合后,在110℃干燥箱内烘干3 h后,再在马弗炉中以2℃/min的速率升温至400℃焙烧4 h,得到CeO_(2)-钢渣复合凝胶材料,及其对甲基橙染料的最佳光催化时间为20 min。

This experiment steel slag as raw material,through the load CeO_(2)was prepared by alkali excitation steel slag composite gel material,on the original steel slag and alkali excitation steel slag the X-ray diffraction pattern comparison,found that the alkali activates the gel in steel slag phase diffraction peak decrease or disappear,by measuring the same concentration of methyl orange solution's absorbance,calculating the removal rate of methyl orange dye.Finally,the optimal preparation ratio was determined by comparison:adding 16 g of Ce(NO_(3))_(3) into 40g of NH_(4)+E-type steel slag composite cementitious material,after full composite dried at 110℃in the drying oven after 3 hours,then in the muffle furnace at A rate of about 2℃/min up to 400℃ degrees Celsius roasting,four hours to get CeO_(2)-steel slag composite gel material,and the best photocatalytic time of methyl orange dye for 20 min.