表面活性剂对电子束制备纳米镍粉的影响
Influence of Surfactants on Ultrafine Nickel Powders Prepared by Electron Beam-irradiation Method
摘 要
在水溶液中,于常温常压下分别使用聚乙烯醇(PVA)和十二烷基三甲基溴化胺(DTAB)为表面活性剂,用电子束辐照方法制备了纳米镍粉;用X射线衍射仪、透射电镜、紫外可见分光光度计和红外光谱对所得产物进行了表征.结果表明：以PVA作表面活性剂得到相对纯的纳米镍粉,平均粒径约为12.6 nm;而以DTAB为表面活性剂得到镍和三氧化二镍的混合物,平均粒径约为25 nm;采用PVA为表面活性剂在产品的纯度和粒度上都优于DTAB.
镍
电子束辐照
表面活性剂
nanoparticle
nickel
EB-irradiation
surfactant
Abstract
Electron beam-irradiation method was applied to prepare nano-sized nickel powders in aqueous system at room temperature and ambient pressure using polyvinyl alcohol (PVA) and dodecyl trimethyl amine bromide(DTAB) as the surfactants respectively.The products were characterized by X-ray diffraction (XRD),ultraviolet-visible spectrophotometer (UV-vis),IR spectrum and transmission electron microscopy (TEM) respectively.The XRD analysis revealed that the relative pure nickel metal products with an average size of 12.6 nm could be obtained using PVA as surfactant,a mixture of nickel and nickel sesquioxide products with an average size of 25 nm was obtained using DTAB as surfactant.This suggests that PVA is prior to DTAB in the preparation of pure nano-sized nickel powders.
中图分类号 TF123.2
所属栏目
基金项目 上海市科委纳米基金资助项目(0252nm095);上海市重点学科资助项目(T0105)
收稿日期 2005/9/1
修改稿日期 2005/11/2
网络出版日期
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备注饶卫红(1979-),女,江西新干人,硕士研究生.
引用该论文: RAO Wei-hong,ZHOU Rui-min,ZHANG Xue-ping,HE Lin-feng,CHEN Yong-kang,AI Ke-ke. Influence of Surfactants on Ultrafine Nickel Powders Prepared by Electron Beam-irradiation Method[J]. Materials for mechancial engineering, 2006, 30(10): 49～51
饶卫红,周瑞敏,张雪平,何林峰,陈永康,爱可可. 表面活性剂对电子束制备纳米镍粉的影响[J]. 机械工程材料, 2006, 30(10): 49～51
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【3】Wang C,Zhang X M,Qian X F,et al.Effect of heat treatment on diele-ctric properties of designated MLCCs with Ni internal electrodes[J].Materials Research Bulletin,1998,33(12):1747-1751.
【4】Degen A,Macek J.Preparation of submicrometer nickel powders by the reduction from nonaqueous media[J].Nanostruct Mater,1999,12:225-228.
【5】Kwang Ho Kima,Yoon Bok Lee a,Eun Young Choi,et al.Synthesis of nickel powders from various aqueous media through chemical reduction method[J].Materials Chemistry and Physics,2004,86:420-424.
【6】Teng M-H,Host J-J,Johnson D-L.Nanophase Ni particles produced by a blown arc method[J].Journal of Materials Research,1995,10(2):233-236.
【7】张晟卯,张春丽,吴志申,等.室温离子液体介质中尺寸、结构可控Ni纳米微粒的制备及结构表征[J].化学学报,2004,62:1443-1446.
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【10】He H,Heist R H,McIntyre B L,et al.Ultrafine nickel particles generated by Laser-induced gas phase photonucleatin[J].Nanostruct Mater,1997,8(7):879-888.
【11】Duan Y-W,Li J-G.Structure study of nickel nanoparticles[J].Materials Chemistry and Physics,2004,87:452-454.
【12】Gao J-Z,Guan F,Zhao Y-C.Preparation of ultrafine nickel powder and its catalytic dehydrogenation activity[J].Materials Chemistry and Physics,2001,71:215-219.
【13】Lisiecki I,Pileni M P.Sythesis of copper metallic clusters using reverse micelles microreactors[J].J Am Chem Soc,1993,(115):3887-3890.
【14】刘志强,李小斌,彭志宏,等.湿化学法制备超细粉末过程中的团聚机理及消除方法[J].化学通报,1999,(7):54-57.
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