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Citation: Qiu Jie-Shan, An Yu-Liang, Li Qi-Xiu, Zhou Ying, Yang Qing. Preparation of Carbon Encapsulated Metal (Mn,Co) Nanomaterials with Apoferrintin as the Constrained Nano-sized Reactor[J]. Acta Physico-Chimica Sinica, ;2004, 20(03): 260-264. doi: 10.3866/PKU.WHXB20040309 shu

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

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 Date: 26 August 2003
Available Online: 15 March 2004

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.
- Fullerenes;Apoferritin;Mineralization;Carbonization;Carbon encapsulated 　nanomaterials
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沈阳化工大学材料科学与工程学院沈阳 110142

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