青岛科技大学本科毕业设计（论文）题目____________________________________________________________________指导教师__________________________辅导教师__________________________学生姓名__________________________学生学号________________________________________________________学院____________________________专业________________班______年___月___日Bi2MoO6/石墨烯复合材料的制备及性能研究李斌李鸿帅1404030114材料科学与工程无机非金属材料工程1412018531Bi2MoO6/石墨烯复合材料的制备及性能研究摘要本论文以硝酸铋、钼酸钠、石墨烯为原料，利用水热法制备了用于光催化作用的Bi2MoO6/石墨烯复合材料。实验中讨论了不同实验条件下对于所得粉体的催化效果、颗粒形貌、粒径等各种特征的影响，不同实验条件有：表面活性剂种类、掺杂量、反应时间、反应温度、溶剂。制备完成后，通过紫外吸收光谱测试其光催化性能，再通过SEM对产物进行表征。通过对部分样品的SEM表征中发现，Bi2MoO6附着在片层石墨烯上的时候，会发生明显的团聚现象。通过对降解后的染料进行紫外吸收光谱测试发现，适当改变制备样品时的溶剂和添加合适的表面活性剂，可以有效的提高样品的降解率。通过对样品进行的紫外吸收光谱测试发现，在绝大部分情况下，样品的禁带宽度越小，相应的降解率会越高，吸收的波长范围也会越大。关键词：钼酸铋；石墨烯；水热法；光催化；复合材料；紫外吸收光谱；禁带宽度PREPARATIONANDPHOTOCATALYTICPERFORMANCEOFBi2MoO6-GRAPHENECOMPOSITESABSTRACTInthisdissertation,Bi2MoO6/graphenecompositesforphotocatalysiswerepreparedbyhydrothermalmethodusingbariumnitrate,sodiummolybdateandgrapheneasrawmaterials.Theeffectsofvariouscharacteristicsonthecatalyticperformance,particlemorphology,andparticlesizeoftheobtainedpowderunderdifferentexperimentalconditionswerediscussed.Theexperimentalconditionswere:surfactanttype,dopingamount,reactiontime,reactiontemperature,solvent.Afterthepreparation,thephotocatalyticpropertiesweremeasuredbyultravioletabsorptionspectroscopy,andtheproductwascharacterizedbySEM.ThroughtheSEMcharacterizationofsomesamples,itwasfoundthatwhenBi2MoO6isattachedtothelamellargraphene,obviousagglomerationoccurs.ThroughtheUVabsorptionspectrumtestofthedegradeddyestuffs,itisfoundthattheappropriatemodificationofthesolventandtheadditionofasuitablesurfactantduringthepreparationofthesamplecaneffectivelyincreasethedegradationrateofthesample.ThroughtheUVabsorptionspectrumtestofthesample,itwasfoundthatinmostcases,thesmallertheforbiddenbandwidthofthesample,thehigherthecorrespondingdegradationrateandthelargerthewavelengthrangeofabsorption.KEYWORDS:Bariummolybdate；Graphene；Hydrothermalmethod；Photocatalysis;Composites；Ultravioletabsorptionspectrum；Bandgapcompositematerials目录Bi2MoO6/石墨烯复合材料的制备及性能研究......................................................I摘要......................................................................................................................I前言.................................................................................................................................................11绪论...............................................................................................................................................2..................................................................................................................................21.2钼酸铋简介........................................................................................................2...........................................................
