物理化学学报 >> 2007, Vol. 23 >> Issue (02): 145-151.doi: 10.1016/S1872-1508(07)60012-6

研究论文 上一篇    下一篇

碳纳米管/ZnO纳米复合体的制备和表征

杨闵昊;梁涛;彭宇才;陈清   

  1. 北京大学电子学系, 纳米器件物理与化学教育部重点实验室, 北京 100871
  • 收稿日期:2006-08-09 修回日期:2006-11-07 发布日期:2007-02-01
  • 通讯作者: 陈清 E-mail:qingchen@pku.edu.cn

Synthesis and Characterization of a Nanocomplex of ZnO Nanoparticles Attached to Carbon Nanotubes

YANG Min-Hao;LIANG Tao;PENG Yu-Cai;CHEN Qing   

  1. Key Laboratory for the Physics and Chemistry of Nanodevices of the Ministry of Education, Department of Electronics, Peking University, Beijing 100871, P. R. China
  • Received:2006-08-09 Revised:2006-11-07 Published:2007-02-01
  • Contact: CHEN Qing E-mail:qingchen@pku.edu.cn

PDF

4939

赞

摘要： 通过将不同直径的ZnO纳米颗粒与碳纳米管连接制备了碳纳米管/ZnO纳米复合体. 将团聚的ZnO纳米颗粒分散并用表面活性剂CTAB使纳米颗粒带正电. 化学氧化碳纳米管使其带负电. ZnO/CTAB微团通过碳管表面羧基与CTAB的静电作用与碳纳米管连接形成纳米复合体. 研究了复合体形成的不同实验条件, 表征了碳纳米管/ZnO纳米复合体的结构并研究了纳米复合体的光学特性. 研究表明, 与碳纳米管连接的ZnO纳米颗粒是互不连接的并保持量子点的特性. 光致发光研究表明ZnO纳米颗粒的激发在纳米复合体中有淬灭.

关键词: ZnO, 碳纳米管, 纳米复合体

Abstract: A CNT/ZnO nanocomplex was fabricated by attaching ZnO nanoparticles with various diameters to carbon nanotubes (CNTs). The as-prepared agglomerate ZnO nanoparticles were dispersed and positively charged by utilizing a cationic surfactant cetyltrimethylammonium bromide (CTAB). ZnO/CTAB micelles were subsequently anchored to the surface of CNTs by electrostatic interaction between carboxyl groups on the chemically oxidized nanotubes′ sidewalls and CTAB molecules. Different experimental conditions for the attachment were studied. The CNT/ZnO nanocomplex was characterized using structural and optical analysis methods. ZnO nanoparticles attached to the carbon nanotubes were found to be separated from each other maintaining characteristics of quantum dots Photoluminescence study showed that the emission of ZnO nanoparticles was quenched in the nanocomplex.

Key words: ZnO, Carbon nanotube, Nanocomplex