通过雾化热分解氧化五羰基铁(Fe(CO)5),在雾化液中添加三乙二醇(TREG)和三正辛基氧膦(TOPO),及在收集液中添加羧基化单甲醚聚乙二醇(MPEG-COOH)等有机修饰剂合成γ-Fe2O3纳米粒子.研究两段加热和单段加热对合成γ-Fe2O3纳米粒子的形貌、粒径、分散性的影响,同时分析温度对γ-Fe2O3纳米粒子结晶性、形貌及磁性能的影响.结果表明:合成的γ-Fe2O3纳米粒子结晶度随温度的升高而增加;MPEG COOH已经修饰在γ-Fe2O3纳米粒子表面;在单段加热模式下温度为360,390,420℃和450℃时合成的γ-Fe2O3纳米粒子在300K下都具有超顺磁性,饱和磁化强度分别为30,37,41,71A· m2·kg-1;单段加热模式较两段加热模式合成的γ-Fe2O3纳米粒子分散性更好.
参考文献
| [1] | CAO M S,WANG R,FANG X,et al .Preparing γ'-Fe4N ultra fine powder by twice nitriding method[J].Powder Technology,2001,115(1):96-98.,2001. |
| [2] | 曹茂盛,刘海涛,陈玉金,王彪,朱静.Synthesis process and growth mechanism of γ′-Fe4N nanoparticles by phase-transformation[J].中国科学E辑(英文版),2003(01):104-112. |
| [3] | CHEN Y J,CAO M S,TIAN Q,et al .A novel preparation and surface decorated approach for α Fe nanoparticles by chemical va por-liquid reaction at low temperature[J].Materials Letters,2004,58(9):1481-1484.,2004. |
| [4] | CHEN Y J,ZHU C L,WANG L J,et al .Synthesis and en hanced ethanol sensing characteristics of α-Fe2O3/SnO2 core-shell nanorods[J].Nanotechnology,2009,20(4):045502.,2009. |
| [5] | COROT C .Recent advances in iron oxide nanocrystal technology for medical imaging[J].Advanced Drug Delivery Reviews,2006,58(14):1471-1504.,2006. |
| [6] | WEISSLEDER R .Long circulating iron oxides for MR imaging[J].Advanced Drug DeliveryReviews,1995,16(2):321-324.,1995. |
| [7] | TAN W,WANG K,HE X,et al .Bionanotechnology based on silica nanoparticles[J].Medicinal Research Reviews,2004,24(5):621-638.,2004. |
| [8] | GUPTA A K,GUPTA M .Synthesis and surface engineering of iron oxide nanoparticles for biomedical applications[J].Biomate rials,2005,26(18):3995-4021.,2005. |
| [9] | LEE S J,JEONG J R,SHIN S C,et al .Magnetic enhancement of iron oxide nanoparticles encapsulated with poly (D,L latide co glycolide)[J].Colloids and Surfaces A:Physicochemical and En gineering Aspects,2005,255(1):19-25.,2005. |
| [10] | NAKANISHI T,LIDA H,OAAKA T,et al.Preparation of iron oxide nanoparticles via successive reduction oxidation in re verse micelles[J].Chemistry Letters,2003,(12):1166-1167.,2003. |
| [11] | NARASIMAN B R V,PRABHAKAR S,MANOHA P R,et al .Synthesis of gamma ferric oxide by direct thermal decomposi tionof ferrouscarbonate[J].Materials Letters,2002,52(4):295 300.,2002. |
| [12] | ROCKENBERGER J,SCHER E C,ALIVISATOS A P,et al .A new nonhydrolytic single precursor approach to surfactant capped nanocrystals of transition metal oxides[J].Journal of the American Chemical Society,1999,21(49):11595-11596.,1999. |
| [13] | HYEONT,LEESS,PARK J,etal .Synthesis of highlycrys talline and monodisperse maghemite nanocrystallites without a size-selection process[J].Journal of the American Chemical Soci ety,2001,123(51):12798-12801.,2001. |
| [14] | GRIMM S,SCHULTZ M,BARTH S,et al .Flame pyrolysis a preparation route for ultrafine pure γ-Fe2O3 powders and the control of their particle size and properties[J].Journal of Mate rials Science,1997,32(4):1083-1092.,1997. |
| [15] | 双端羧基聚乙二醇的合成[J].化学与生物工程,2005(10):42-43. |
| [16] | GONZALEZ CARRENO T,MORALES M P,SEMA C J,et al .Preparation of uniform γ-Fe2O3 particles with nanometer size by spray pyrolysis[J].Materials Letters,1993,18(3):151155.,1993. |
| [17] | ASUHA S,ZHAO S,WU H Y,et al .One step synthesis of maghemite nanoparticles by direct thermal decomposition of Fe urea complex and their properties[J].Journal of Alloys and Compounds,2009,472(1):L23-L25.,2009. |
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