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[1]侯飞,谭轶巍.PdCu二元合金纳米晶体的合成及其自组装[J].南京工业大学学报(自然科学版),2013,35(01):1-14.[doi:10.3969/j.issn.1671-7627.2013.01.004]
 HOU Fei,TAN Yiwei.Synthesis and self-assembly of PdCu nanoalloys[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(01):1-14.[doi:10.3969/j.issn.1671-7627.2013.01.004]
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PdCu二元合金纳米晶体的合成及其自组装()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年01期
页码:
1-14
栏目:
出版日期:
2013-01-20

文章信息/Info

Title:
Synthesis and self-assembly of PdCu nanoalloys
文章编号:
1671-7627(2013)01-0014-05
作者:
侯飞谭轶巍
南京工业大学 化学化工学院 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
HOU Fei TAN Yiwei
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
关键词:
钯铜合金 纳米晶体 溶液相 自组装
Keywords:
PdCu nanocrystals solution-phase self-assembly
分类号:
O614.8
DOI:
10.3969/j.issn.1671-7627.2013.01.004
文献标志码:
A
摘要:
采用胶体合成的方法,在十八烯、油胺的存在下,以1,2-十六烷基二醇作为还原剂直接还原乙酰丙酮铜和乙酰丙酮钯的混合物,得到高质量的PdCu合金纳米晶体。所合成的PdCu纳米晶体能够分散在正己烷或甲苯中形成稳定的胶体溶液,通过缓慢地蒸发溶剂,纳米晶体能够在基底上自组装成长程有序的二维(2D)超晶格。考察了反应温度对纳米晶体尺寸的影响,以及胶体溶液的浓度和溶剂的蒸发速率对自组装过程的影响,并采用X线衍射仪(XRD)、透射电镜(TEM)、场发射扫描电镜(FE-SEM)对所得纳米晶体及其自组装超晶格进行表征。结果表明:反应温度越高,PdCu纳米晶体的尺寸越小。240 ℃下,平均粒径为(3.9±0.2)nm; 200 ℃下,平均粒径为(5.9±0.5)nm。超晶格中,PdCu纳米晶体是以六方密堆积(hcp)的方式排列。
Abstract:
The synthesis of high-quality PdCu bimetallic nanocrystals(NCs)was achieved by simultaneous reduction of copper(Ⅱ)-acetylacetonate and palladium(Ⅱ)-acetylacetonate with 1, 2-hexadecanediol in 1-octadecene in the presence of oleylamine. As-prepared PdCu was dissolved in hexane or toluene to form stable colloidal solution. As the solvent evaporated slowly from a droplet of such a colloid with appropriate concentration on a substrate, the nanocrystals could be self-assembled into long-range ordering 2D superlattices. The samples were characterized and analyzed by X-ray diffraction(XRD), transmission electron microscope(TEM)and field emission scanning electron microscope(FE-SEM). The results showed that variation of the reaction temperature affected the sizes of PdCu NCs. The average final size of PdCu NCs prepared at 240 ℃ and 200 ℃ were(3.9±0.2)nm and(5.9±0.5)nm, PdCu NCs with spherical shape finally formed hexagonal close-packed(hcp)lattice.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2011-07-05
基金项目:国家自然科学基金(21071079)
作者简介:侯飞(1985—),男,江苏泰州人,硕士生,主要研究方向为纳米材料; 谭轶巍(联系人),教授,E-mail:ytan@njut.edu.cn..
更新日期/Last Update: 2013-01-20