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ID:34431016
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时间:2019-03-06
《fe_3o_4_tio_2核_壳结构磁性纳米材料的制备及光催化性质》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、学报312JournalofChinaPharmaceuticalUniversity2010,41(4):312-316·论文·Fe3O4-TiO2核-壳结构磁性纳米材料的制备及光催化性质1,2*13丁娅,包蕾,张文婕12(中国药科大学药物分析教研室,南京210009;南京大学化学化工学院生命分析化学教育部重点实验室,3南京210093;中国药科大学新药研究中心,南京210009)摘要制备了一种具有核-壳结构的Fe3O4-TiO2磁性纳米粒,并研究其光催化性质。在表面活性剂存在的条件下,采用金属盐
2、共沉淀法制备氧化铁纳米粒,并在其表面包覆二氧化钛外层,形成具有壳-核结构的磁性纳米粒子。利用透射电镜和扫描电镜技术对其形貌进行表征,以罗丹明B作为模型分子对其光催化性质进行研究。制得的Fe3O4-TiO2纳米粒在常温下具有磁性,可从溶液中通过永久磁铁对富集于纳米粒的有机分子或药物进行简单而有效的分离,并且对罗丹明B分子具有良好的光催化作用,有望作为有机分子或药物富集、分离和光降解的纳米材料。关键词磁性纳米粒;核-壳结构;氧化铁;二氧化钛;光催化;罗丹明B中图分类号O643文献标识码A文章编号1000
3、-5048(2010)04-0312-05PreparationandphotocatalyticpropertyofmagneticFeO-TiOnanoparticles342withacore-shellstructure1,2*13DINGYa,BAOLei,ZHANGWen-jie12DepartmentofPharmaceuticalAnalysis,ChinaPharmaceuticalUniversity,Nanjing210009;KeyLaboratoryofAnalytical
4、Chemistry3forLifeScience,SchoolofChemistryandChemicalEngineering,NanjingUniversity,Nanjing210093;CenterforDrugDiscovery,Chi-naPharmaceuticalUniversity,Nanjing210009,ChinaAbstractThepreparationofthemagneticFeO-TiOnanoparticleswithacore-shellstructure,an
5、dinvestigation342oftheirphotocatalyticpropertiesarereportedinthispaper.ThemagneticFeOnanoparticlesweresynthesizedby34co-precipitationmethodinthepresenceofthesurfactant,andcoatedwiththeshellofTiOtoformthecore-shell2structureofcatalysts.Thepreparedmateri
6、alwascharacterizedbythetransmissionandscanningelectronmicros-copy,andthephotocatalyticpropertywasevaluatedusingRhodamineB(RB)asthemodelmolecule.Thepre-paredFeO-TiOnanoparticlesshowedgoodmagneticpropertyatroomtemperatureundertheexternalmagnetic342field,
7、andcouldbeseparatedfromthesolutioneasilyandeffectively.TheRBmoleculescouldbedecomposedbythecatalystundertheirradiationofUVlight.TheFeO-TiOnanoparticlesareanewtypeofpotentialnanomate-342rialfortheseparation,concentration,anddecompositionoforganicordrugm
8、olecules.Keywordsmagneticnanoparticles;core-shellstructure;ironoxide;titaniumdioxide;photocatalysis;RhodaminBThisstudywassupportedbytheMinistryofEducationKeyLaboratoryofLifeAnalyticalChemistryOpenFoundationofNanjingUniversity(No.KLACL
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