活性白土-Bi2WO6光催化剂的制备及其光催化降解含酚废水

2015年1月第23卷第1期工业催化INDUSTRIALCATALYSISJan．2015V01．23No．1环境保护与催化活性白土一Bi2WO6光催化剂的制备及其光催化降解含酚废水付红普，宜沛沛，高晓明，付峰，李稳宏(1．华东理工大学工程设计研究院有限公司，上海200237；2．延安大学化学与化工学院，陕西省化学反应工程重点实验室，陕西延安716000；3．西北大学化工学院，陕西西安710069)摘要：采用水热法合成纳米BiWO粉末，将其负载于陕北志丹县白土上，制得用于光催化降解含酚废水的活性白土一BiWO负载型可见光催化剂，并对其进行XRD和uV—VisDRS表征。以含酚废水为目标污染物，通过单因素试验和正交试验方法研究活性白土一Bi，WO光催化剂催化降解含酚废水的性能。结果表明，在活性白土一Bi，WO光催化剂用量0．5mg·L～、过氧化氢用量0．1mL·mL和400W金卤灯光照120min条件下，含酚废水降解率可达98．29％，且重复使用2次后，仍具有较好的催化效果。关键词：催化化学；活性白土一BiWO光催化剂；光催化；含酚废水；降解doi：10．3969／j．issn．1008—1143．2015．01．014中图分类号：0643．36；X703．5文献标识码：A文章编号：1008—1143(2015)01-0069-06Preparationandapplicationofactivatedwhiteclay-Bi2Wo6photocatalystfordegradationofphenol-containingwastewaterFuHongpu，YiPeipei，GaoXiaoming。，FuFeng．LiWenhong(1．EngineeringDesign&ResearchInstituteCo．，Ltd．，EastChinaUniversityofScienceandTechnology，Shanghai200237，China；2．CollegeofChemistryandChemicalEngineering，ShaanxiKeyLaboratoryofChemicalReactionEngineering，Yan’anUniversity，Yan’an716000，Shaanxi，China；3．CollegeofChemicalEngineering，No~hwestUniversity，Xi’an710069，Shaanxi，China)Abstract：NanoBi2WO6powderwaspreparedbyhydrothermalsynthesismethod，andthenactivatedwhiteclay—Bi2WO6photocatalystfordegradationofphenol—containingwastewaterwaspreparedbyloadingnanoBi2WO6powderonactivatedwhiteclayofZhidaninnorthofShaanxiprovince．Theactivatedwhiteclay—Bi2WO6photocatalystwascharacterizedbyXRDandUV—VisDRS．Usingthesimulatedphenol—containingwastewaterastheaimedpollutants，theperformanceoftheactivatedwhiteclay—Bi2WO6photocatalystfordegradationofcontainingphenolwastewaterundervisiblelightwasinvestigatedbysinglefactorandorthogonaltests．Theresultsshowedthatthedegradationrateofsimulatedphenol—containingwastewaterontheactivatedwhiteclay—Bi2WO6photocatalystreached98．29％undertheoptimalconditionas~llows：activatedwhiteclay—Bi2WO6photocatalystamount0．5mg·L～，H2O2dosage0．1mL·mL～，mercurylamp400W，andilluminationtime120rain．Afterrepeateduseof3times，theactivatedwhiteclay—Bi2WO6photocatalyststillexhibitedbettercatalyticeffect．收稿日期：2014—06—25；修回