物理化学学报 >> 2004, Vol. 20 >> Issue (03): 260-264.doi: 10.3866/PKU.WHXB20040309

研究论文 上一篇    下一篇

生物基碳包覆纳米材料(Mn,Co)的制备

邱介山;安玉良;李杞秀;周颖;杨青   

  1. 大连理工大学化工学院炭素材料研究室,纳米材料科学研究中心,大连 116012;
  • 收稿日期:2003-08-26 修回日期:2003-11-06 发布日期:2004-03-15
  • 通讯作者: 邱介山 E-mail:jqiu@dlut.edu.cn

Preparation of Carbon Encapsulated Metal (Mn,Co) Nanomaterials with Apoferrintin as the Constrained Nano-sized Reactor

Qiu Jie-Shan;An Yu-Liang;Li Qi-Xiu;Zhou Ying;Yang Qing   

  1. Carbon Research Laboratory, Center for Nano Materials & Science, School of Chemical Engineering, Dalian University of Technology, Dalian 116012; Department of Bio-Chemical Engineering, School of Environmental and Bio-Chemical Science and Engineering, Dalian University of Technology, Dalian 116024
  • Received:2003-08-26 Revised:2003-11-06 Published:2004-03-15
  • Contact: Qiu Jie-Shan E-mail:jqiu@dlut.edu.cn

摘要: 提出了一种制备碳包覆纳米材料的新方法.以生物蛋白为前驱体材料,蛋白质肽链构成的空心结构作为合成碳包覆纳米材料的模板反应器;在热处理时,蛋白肽链发生分解,残留的碳作为碳源形成富勒烯类空心纳米材料的壳体,并将填充在蛋白质空心结构内部的金属材料包覆起来.以此技术制备了铁磁性金属锰和钴的碳包覆纳米级材料,初步验证是可行的.讨论了蛋白的矿化组装和蛋白的炭化反应机理.

关键词: 富勒烯, 脱铁蛋白, 矿化组装, 炭化, 碳包覆纳米材料

Abstract: A novel approach for preparing carbon-encapsulated nanomaterials is reported, in which apoferritin molecules, a kind of biomaterial with hollow cages, were used as the starting nano-sized reactors to trap the precursors of magnetic metals(Mn, Co). It has shown that the nano-sized metal particles can be effectively encapsulated inside the carbon shells that are formed by carbonizing protein molecules below 800 ℃ in a controllable way. The transmission electron microscopy images show that the as-prepared nanoparticles consist of a metal core and a carbon shell with narrow size distribution. The mechanisms of mineralization of apoferritin and carbonization of the mineralized protein are discussed in terms of the structure and properties of the protein precursor. It is believed that this novel approach may provide a new option for preparation of carbon-encapsulated nanomaterials based on other biomaterials such as fungi and actinomycete.

Key words: Fullerenes, Apoferritin, Mineralization, Carbonization, Carbon encapsulated  nanomaterials