Acta Phys. -Chim. Sin. ›› 2001, Vol. 17 ›› Issue (09): 824-827.doi: 10.3866/PKU.WHXB20010913

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Bi-Ba-Fe-O-Cl Micro-nanotube of Tetragonal Prism Crystal

Shen Ruo-Fan;Wang Fa-Yang;Xiong Zhao-Xian;Xue Ru   

  1. Department of Chemistry, Xiamen University, Xiamen 361005
  • Received:2001-02-27 Revised:2001-05-30 Published:2001-09-15
  • Contact: Shen Ruo-Fan

Abstract: A micronanotube of new inorganic compound with external shape of tetragonal prism has been synthesized. It is made of transitional metal oxychloride. From SEM detection, the micronanotube has an external diameter of 100-500 nm and an internal diameter of 60-300 nm. Its wall is very thin, 20-70 nm, and its length is from a dozen micro to dozens of microns(to see Fig.1(ad)). It has been prepared by solid state reaction in a direct growth way.   From XRD, TEM and SEM determination, the micronanotube crystal belongs to orthorhombic system and its lattice constants are a=0.5864(2)nm, b=0.6032(2)nm andc=2.972(2)nm(to see Fig.1~2 and Table 1). It possesses semiconducting properties. From curve log(1/ρ)~1/T, its energy gap isEg≈1.2 eV(to see Fig.3). The micronanotube material will be a prospect material used as catalysts, material to store gases or energy, and material used as electrode in photoelectric cell and photoelectrolytic cell.   Additionally, the preparation of the micronanotube material by solid state reaction is simple in operation and cheap in cost.

Key words: Nanotube, Microtube, Orthorhombic system, Photoelectric cell