陶瓷含報Vol.44,No.3第44卷，第3期2023年6月D0I:10.13957/j.cnki.tcxb.2023.03.017JournalofCeramicsJun.2023rGO/BiVO4复合光催化剂的制备与性能研究杜英和，李文涛，李家科，刘欣，江和栋，郭平春，朱华，王艳香(景德镇陶瓷大学材料科学与工程学院，江西景德镇333403)摘要：先采用改性Hummers法制备氧化石墨烯(GrapheneOxide,GO)，然后以氧化石墨烯、硝酸铋和偏钒酸铵等为主要原料，采用水热法合成还原氧化石墨烯/钒酸铋(rGO/BiVO4)复合光催化剂。采用XRD、SEM、EDS、UV-VIS和BET等测试技术研究了试样的物相组成、微观形貌、元素分布、光吸收性能和比表面积。以亚甲蓝溶液(10mg·L-")为模拟污染物，测试了试样的光催化性能。结果表明，rGO可以提高复合光催化剂的吸附性能和调控带隙宽度，从而提高光催化性能。当rGO复合量为1wt.%、水热温度为160℃C、水热时间为10h时，合成的rGO/BiVO4具有最佳光催化性能，在光照240min后，对亚甲蓝的降解率达91.1%，比BiVO4的光催化效率高26.7%。关键词：rGO/BiVO4；物相组成；微观形貌；光催化性能中图分类号：TQ174.75文献标志码：A文章编号：1000-2278(2023)03-0556-07PreparationandPhotocatalyticPerformanceofrGO/BiVO4CompositePhotocatalystDUYinghe,LIWentao,LIJiake,LIUXin,JIANGHedong,GUOPingchun,ZHUHua,WANGYanxiang(SchoolofMaterialsScienceandEngineering,JingdezhenCeramicUniversity,Jingdezhen333403,Jiangxi,China)Abstract:Grapheneoxide(GO)waspreparedbyusingthemodifiedHummersmethod,withwhichrGO/BiVO4compositephotocatalystwasthensynthesizedbyusinghydrothermalmethod,togetherwithbismuthnitrateandammoniummetavanadateasthemainrawmaterials.Phasecomposition,microstructure,elementdistribution,lightabsorptionpropertiesandspecificsurfaceareaofthesampleswerestudiedbyusingXRD,SEM,EDS,UV-VISandBETtechniques.Photodegradationperformanceofthesampleswasstudiedbyusingmethylenebluesolution(10mg:L-l)asasimulatedpollutant.DuetotheincorporationofrGO,lightabsorptionofrGO/BiVO4wasincreasedanditsbandgapwasadjusted,thusleadingtoimprovementinphotocatalyticability.WhenthecontentofrGOis1wt.%,afterhydrothermalreactionat160°Cfor10h,thesynthesizedrGO/BivO4exhibitedoptimalphotocatalyticperformance,withdegradationrateofmethylenebluesolutionreach...
