摘要
叙述了一个有效的由聚乙二醇形成假冠醚结构稳定的金纳米粒子在多壁碳纳米管(MWNTs)表面自组装研究。MWNTs在H2SO4-HNO3溶液中经氧化修饰上羧基和羟基之后,以光化学合成和晶种媒介生长法制备的胶体金纳米粒子被直接附着在其表面上。通过对Au/MWNTs复合物的TEM表征,研究了金纳米粒子尺寸对MWNTs表面自组装的影响;同时探讨了金纳米粒子对MWNTs表面自组装的驱动力。
An effective and facile self - assembly method of gold nanoparticles confined by PEG forming pseudo - crown ether on multi - walled carbon nanotubes （MWNTs） was deseribed. MWNTs were modi- fied at first chemically by small amounts of earboxyl and hydroxyl groups with refluxing in H2 SO4 - HNO3 mixture, then the colloidal Au nanoparticles prepared by photochemical method and seed medium -growth were self- assembled on the surface of MWNTs. Based on th.e characterization for obtaining Au/CNTs composites, the effect of the gold nanoparticle sizes on the self - assembly of the functionalized MWNTs was investigated. At the same time, the driving force of the self - assembly of gold nanoparticles on the functionalized MWNTs was discussed.
出处
《贵金属》
CAS
CSCD
北大核心
2010年第2期28-31,36,共5页
Precious Metals
基金
国家科技部院所专项(NCSTE-2006-JKZX-062)
云南省自然科学基金(2006E0052Q)资助项目
关键词
金属材料
多壁碳纳米管(MWNTs)
金纳米粒子
假冠醚
自组装
metal material
multi -walled carbon nanotubes （MWNTs）
gold nanopartieles
pseudo - crown ether
self- assembly
