2023年第43卷第1期化工环保ENVIRONMENTALPROTECTIONOFCHEMICALINDUSTRY·113·ZnO/α-Fe2O3复合材料对偶氮染料的降解高芳，别祉睿，谭赛娅，丁粤雨，贺语典（武汉科技大学湖北省煤转化与新型炭材料重点实验室，湖北武汉430081）［摘要］采用水热法制备了ZnO/α-Fe2O3复合光催化剂，并用XRD、SEM、UV-Vis和FTIR等多种手段进行了表征，考察了该催化剂对溶液中橙Ⅱ和甲基橙的光催化降解性能。表征结果显示，负载ZnO后，ZnO/α-Fe2O3催化剂的吸光范围变宽，禁带宽度变窄，催化活性增强。实验结果表明：在ZnO/α-Fe2O3中ZnO的质量分数为30%、ZnO/α-Fe2O3催化剂加入量为1.0g/L、甲基橙或橙Ⅱ质量浓度为5mg/L、暗反应时间为30min、光反应时间为120min的条件下，该催化剂对甲基橙和橙Ⅱ的催化降解效果最好，甲基橙和橙Ⅱ的去除率分别为62.2%和64.7%；该催化剂连续使用5次后，对甲基橙的去除率从62.2%缓慢下降到54.9%，表现出较好的稳定性和重复使用性能。［关键词］α-Fe2O3；ZnO；复合材料；光催化；偶氮类染料［中图分类号］X703［文献标志码］A［文章编号］1006-1878（2023）01-0113-06［DOI］10.3969/j.issn.1006-1878.2023.01.017DegradationofazodyesbyZnO/α-Fe2O3compositematerialGAOFang，BIEZhirui，TANSaiya，DINGYueyu，HEYudian（HubeiKeylaboratoryofCoalConversionandNewCarbonMaterial，WuhanUniversityofScienceandTechnology，Wuhan430081，China）Abstract：ZnO/α-Fe2O3compositephotocatalystwaspreparedbyhydrothermalmethodandcharacterizedbyXRD，SEM，UV-Vis，EDSandFTIR.ThephotocatalyticactivityofthecatalystonphotocatalyticdegradationoforangeⅡandmethylorangewasevaluated.ThecharacterizationresultsindicatethatafterloadingZnO，ZnO/α-Fe2O3catalysthaswiderabsorptionrange，narrowerbandgapandenhancedcatalyticactivity.Theexperimentalresultsshowthat：UndertheconditionsofZnOmassfractionofZnO/α-Fe2O330%，catalystamount1.0g/L，massconcentrationoforangeⅡormethylorange5mg/L，darkreactiontime30min，lightreactiontime120min，orangeⅡandmethylorangehasbestdegradationeffectonthecatalystwith62.2%and64.7%ofremovalrate，respectively；With5-timeuseofthecatalyst，theremovalrateofmethylorangedecreasesslowlyfrom62.2%to54.9%，showinggoodstabilityandreusabilityofthecatalyst.Keywords...
