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1、┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊安徽工业大学毕业设计(论文)摘要半导体光催化剂可以解决环境污染,水污染等问题,成为光催化剂领域研究热点,而提高光催化剂对可见光的吸收能力从而增强其催化性能更是人们关注的焦点。本文采用沉淀法,以无水氯化铜、氯化铁、纯化后的CNTs等为原料制备CNTs/CuO-Fe2O3纳米复合材料,同时考察了温度和原料比对复合物制备的影响。采用X射线粉末衍射仪(XRD)、红外光谱(FTIR)和场发射扫描电镜(FESEM)研究CNTs/CuO-Fe2O3纳米复合材料的组织结构和形貌,同时采用紫外-可见分光光度计测试所制复合材料对甲基橙
2、的光催化性能。结果表明,(1)CNTs功能化后纯度提高,均匀分散于溶液中,有利于金属颗粒的负载;(2)在相同工艺流程下,不同条件的实验对比中,以75℃的温度条件、氯化铜和氯化铁投入量分别为0.85g和0.4g制备出的CNTs/CuO-Fe2O3效果最佳;(3)CNTs/CuO-Fe2O3纳米复合材料对甲基橙的降解率高于单独Fe2O3颗粒(对甲基橙的降解率20%左右)和CuO-Fe2O3纳米簇(对甲基橙的降解率40%左右),其对甲基橙的降解率高达65%。关键词:碳纳米管;复合半导体光催化剂;光催化;甲基橙I┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊安徽工业大
3、学毕业设计(论文)AbstractSemiconductorphotocatalystscansolvetheenvironmentalpollution,waterpollutionandotherissues,andbecameacatalystlightfieldresearchfocus,whileimprovingphotocatalystforUVabsorptioncapacitytherebyenhancingitscatalyticperformanceisthefocusofattention.Inthispaper,precipitatedwithanhydrousco
4、pperchloride,ferricchloride,purifiedCNTsandotherrawmaterials,CNTs/CuO-Fe2O3nanocompositespreparedunderthesameprocessindifferentconditions,usingXRD,FTIR,SEM,UV,ultraviolet-visiblespectrophotometerresearchorganizationstructureandmorphologyCNTs/CuO-Fe2O3nanocomposites,usingmethylorangeassourcesofphoto
5、catalyticpropertiesofsewagetreatmentexperimentaltestofthecatalyst.Theresultsshowthat(1)FunctionalizedCNTsimprovedpurity,uniformlydispersedinthesolution,themetalparticlesconduciveload;(2)Inthesameprocess,thecomparisonofdifferentexperimentalconditions,theconditionsofatemperatureof75℃,sodiumhydroxidea
6、sthealkalisource,copperchlorideandferricchlorideinputs0.85gand0.4gwerepreparedforCNTs/CuO-Fe2O3loadworksbest;(3)MethylorangedegradationrateofCNTs/CuO-Fe2O3nanocompositeishigherthanthese0fFe2O3particles(degradationrateofmethylorangearound20%)andCuO-Fe2O3nanoclusters(degradationrateofmethylorangearou
7、nd40%),thedegradationrateisashighas65%.Keywords:Carbonnanotubes;compoundsemiconductorphotocatalyst;photocatalysis;methylorangeI┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊安徽工业大学毕业设计(论文)┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线