高炉渣制备光催化剂及其催化活性的研究  

Preparation and Photocatalytic Activities of Photocatalysts From High-iron Slag

作　　者：徐培君[1] 刘红[1] 周志辉[1] 王小华[1] 宋卫坤[2] 

机构地区：[1]武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室资源与环境工程学院,武汉430081 [2]华北电力大学能源与环境研究院,北京102206

出　　处：《工业安全与环保》2012年第1期84-87,共4页Industrial Safety and Environmental Protection

基　　金：湖北省武汉市重大科技攻关项目(200861113462)

摘　　要：以废弃的冶金高炉渣为原料,采用混酸酸溶-水热合成法制备了光催化剂,并对其进行了SEM、UV-Vis、XRD、比表面积等物性测试分析;通过处理甲基橙模拟废水,探讨了制备过程中渣酸比、混酸配比、渣用量、溶渣时间等条件对高炉渣制光催化剂活性的影响。将所制光催化剂与P25光催化剂进行对比分析,结果表明,高炉渣制光催化剂不仅具有较高的光催化活性,而且制备成本低廉,仅为P25光催化剂的1/10,这对于冶金高炉渣的循环再利用及光催化氧化技术的工业化应用具有重要的实际意义。The photocatalysts are prepared from discarded high-iron slag using a mixed acid dissolution-hydrothermal synthesis method.The prepared photocatalysts are characterized by SEM,UV-Vis,XRD and BET surface area techniques.The effects of ratio of H2SO4 to HNO3,slag dosage and time of acidolysis on the photocatalytic activity of the photocatalysts are evaluated via the photodegradation of methyl orange in aqueous solution.The results show that the high-iron slag photocatalyst exhibits not only high photocatalytic activity,but also low cost of preparation compared with P25（just one tenth of P25）,which is of important practical significance for the recycling of high-iron slag and industrial application of photocatalytic technology.

关 键 词：高炉渣 光催化剂 光催化活性 甲基橙 脱色率 

分 类 号：X756[环境科学与工程—环境工程]