Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (11): 3113-3119.doi: 10.3866/PKU.WHXB20101119

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Synthesis, Characterization and Surface Functionalization of Novel Spindle-Like α-Fe2O3 Nanocrystals

ZHAN Yong-Gong1,2, CHEN Qi-Yuan1, YIN Zhou-Lan1, LI Li-Li2, CAI Bing-Xin2   

  1. 1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China;
    2. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
  • Received:2010-07-09 Revised:2010-09-06 Published:2010-10-29
  • Contact: CHEN Qi-Yuan, CAI Bing-Xin E-mail:cqy@mail.csu.edu.cn, cbx@hnu.cn
  • Supported by:

    The project was supported by the National Key Technology R&DProgramin the 11th Five-Year Plan of China (2006BAE02B05) and National Key Basic Research Programof China (973) (2005CB221406).

Abstract:

We synthesized novel α-Fe2O3 nanocrystals (NFO-1) with single crystalline structure. In our synthetic strategy, the morphology and structure can be controlled simultaneously by the choice of inorganic salt (IS) and organic template (OT) in the extremely low precursor concentration reaction system. The evaporation-induced self-assembly (EISA) method was used to accelerate the reaction and to recover the synthesized α-Fe2O3 with high yields while preserving its favorable shape and structure. The morphologies and structures of the obtained α-Fe2O3 nanocrystals greatly influence their surface functionalization capability. The chemical interaction between NFO-1 and the surface functionalization agent (dopamine) was obviously enhanced because of its special spindle-likemorphology. The synthesis method described in this paper is suitable for the synthesis of other transition metal oxide single nanocrystals as well and we expect that this new route will be useful for the synthesis of novel nanomaterials.

 

Key words: α-Fe2O3 nanocrystal, Template-direction, Evaporation-induced self-assembly, Surface functionalization

MSC2000: 

  • O641