电子束辐射技术制备纳米氧化铁Preparation of Nanocrystalline α- Fe2O3 by Radiation Technique
李珍,吴明红,顾建忠,焦正,吕森林,王德庆
摘要(Abstract)：
以2MeV10mAGJ-2-II电子加速器作为放射源,采用新型电子束辐射技术来制备纳米氧化铁材料。该制备是在常温常压下进行且不需要任何催化剂。通过实验发现,溶液pH为6.54,辐照剂量达到300kGy为最佳的实验条件。通过X射线衍射(XRD),透射电子显微镜(TEM)和红外光谱(FTIR)分析了α-Fe2O3的结构、形貌及其粒径。X射线衍射谱表明辐射法制备的α-Fe2O3纳米颗粒具有六面体结构,结合Scherer公式近似计算出颗粒的晶粒径为30~60nm。从TEM照片可以看出,辐射法制备的纳米氧化铁颗粒形状为球形,分散均匀,平均粒径为30~60nm。FTIR谱图显示辐射法制备的粉末出现了两个谱带V1和V2,两个谱带相应的波数为536.57和460.09cm?1。这正是属于α-Fe2O3的特征吸收。实验结果说明电子束辐射技术是一种制备纳米氧化铁的有效的方法。
关键词(KeyWords)： 辐射技术;纳米材料;氧化铁;电子束
基金项目(Foundation): 上海市教育委员会(04AB42);; 上海市启明星基金(05QMX1423);; 上海市重点学科(T0105)。
作者(Author): 李珍,吴明红,顾建忠,焦正,吕森林,王德庆
参考文献(References)：
- [1]LI Jing-xian(李竟先),WU Ji-qiu(吴基球),YAN Cheng(鄢程).Hydrothermal preparation of particle(纳米颗粒的水热法制备)[J].China Ceramics(中国陶瓷)2002,38(5):36-39.
- [2]HE Hui-lan(贺会兰),ZHENG Xue-zhong(郑学忠),WEI Yu(魏雨).A study of preparation of spindleα-Fe2O3by forced hydrolysis(强迫水解法制备纺锤状α-Fe2O3的研究)[J].J Hebei Normal University(Natural Science)河北师范大学学报(自然科学版),1997,21(3):301-304.
- [3]Xu X L,Guo J D,Wang Y Z.A novel technique by the citrate pyrolysis for preparation of ironoxide nanoparticles.[J].Materials Science and Engineering,2000,B77:207-209.
- [4]Kulkarni S S,Lokhande C D.Structural,optical,electrical and dielectrical properties of electrosynthesized nanocrystalline iron oxide thin films.[J].Materials Chemistry and Physics,2003,82:151-156.
- [5]TANG Yong-zheng(汤勇铮),ZHANG Wen-min(张文敏).Study on preparation of monodisperse naonparticles by microwave-hydrolysis(微波水解法制备均分散α-Fe2O3纳米粒子的初步研究)[J].Chemical Research and Application(化学研究与应用),1998,10(4):419-422.
- [6]YAO Chao(姚超),MA Jiang-quan(马江权),LIN Xi-ping,et al(林西平等).The preparation of nanosized lanthanum oxide(纳米氧化镧的制备)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2003,17(6):685-688.
- [7]Tamai H,Ikeya T,Nishiyama F.NO decomposition by ultrafine noble metals dispersed on the rare earth phosphate hollow particles[J].Journal of Materials Science,2000,35:4945-4953.
- [8]QI Xiu-xiu(祁秀秀),LU Jian-mei(路建美),ZHANG Zheng-biao,et al(张正彪等).Synthesis of polyamic acid sulfone and polyimide sulfone by microwave irradiation(聚砜酰胺酸和聚砜酰亚胺的微波辐射合成)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2003,17(2):151-156.
- [9]Divan R,Mancini D C.Moldovan N,Assoufid L,Chu Y,Ma Q.Rosenberg R A.Patterned deposition of metallic nanoclusters from solution using synchrotron radiation[A].Microprocesses and Nanotechnology Conference[C],Japan:2001,176-177.
- [10]Skorvanek I,Gerling R.Neutron irradiation effects on the structural,magnetic and mechanical properties of amorphous and nanocrystalline Fe73.5Cu1Nb3Si13.5B9[J].IEEE Transactions on Magnetics,1994,30(2):548-551.