NORTHERNARCHITECTURE45第8卷第2期2023年4月节能与环保方建筑北BiOCl,Ii-x纳米花固溶体光催化剂制备及室内空气环境净化研究闫刚，杜晓军（吉林建筑大学，吉林长春130118)摘要：本研究利用具有高光生电子空穴对分离效率的BiOCl和具有优异可见光吸收特性的BiOI，采用水热法制备BiOClIi-固溶体催化剂，通过调节卤素之间的相对含量来可控调节半导体催化剂的能带结构和光催化性能。利用SEM,XRD等技术对催化剂的晶相、形貌等进行表征，并以甲醛为目标降解物，评价其可见光催化活性。光催化降解甲醛性能研究表明，在可见光照射下,Bi0Clo.6l0.4固溶体催化剂在60min内对甲醛溶液的降解明显高于单体BiOCI和BiOI,同时在模拟室内真实环境条件下同样可实现甲醛溶液的高效降解。进一步对其光催化降解机理研究发现，BiOCIIi-固溶体催化剂光降解甲醛过程中h+直接氧化甲醛分子起主导作用，也存在一定的·OH对甲醛的氧化作用。关键词：卤氧化铋；固溶体；甲醛；光催化中图分类号：TQ426文献标识码：A文章编号：2096-2118(2023)02-0045-05PreparationofBiOClIi--NanoflowersSolidSolutionPhotocatalystandStudyonIndoorAirEnvironmentPurificationYANGang,DUXiaojun(JilinJianzhuUniversity,ChangchunJilin130118,China)Abstract:Inthisstudy,BiOClI-xsolidsolutioncatalystwaspreparedbyhydrothermalmethodusingphotoin-ducedelectronholepairBiOClwithhighseparationefficiencyandBiOIwithexcellentvisiblelightabsorptioncharacteristics.Theenergybandstructureandphotocatalyticperformanceofsemiconductorcatalystwerecon-trolledbyadjustinghalogencontent.ThecrystalphaseandmorphologyofthecatalystwerecharacterizedbySEM,XRDandothertechniques,anditsvisiblelightcatalyticactivitywasevaluatedwithformaldehydeasthetargetdegradationproduct.Thestudyofphotocatalyticdegradationofformaldehydeshowedthatundervisiblelightirradiation,thedegradationofformaldehydesolutionbyBiOCloclo4solidsolutioncatalystwassignificantlyhigherthanthatofmonomerBiOClandBiOIin60minutes,andtheefficientdegradationofformaldehydesolutioncouldalsobeachievedundersimulatedindoorrealenvironmentalconditions.Furtherresearchonitsphotocatalyticdegradationmechanismfoundthatthedirectoxidationofformaldehydemoleculesbyhtplayedaleadingroleintheprocessofp...
