物理化学学报 >> 2001, Vol. 17 >> Issue (09): 824-827.doi: 10.3866/PKU.WHXB20010913

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Bi-Ba-Fe-O-Cl棱柱形微米-纳米管

沈若范;王发扬;熊兆贤;薛茹   

  1. 厦门大学化学化工学院,厦门　361005
  • 收稿日期:2001-02-27 修回日期:2001-05-30 发布日期:2001-09-15
  • 通讯作者: 沈若范 E-mail:rfshen@jingxian.xmu.edu.cn

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 E-mail:rfshen@jingxian.xmu.edu.cn

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摘要： 用固体反应直接生长法合成一种过渡金属氯氧化合物无机纳米微米管.它具有特殊的四方棱柱外形.根据SEM测定，该纳米微米管外径为100～500 nm, 有的更小，内径是外径的五分之三,约60－300 nm.根据XRD、TEM 和SEM测定，这种纳米微米管晶体属于正交晶系，其晶格常数为a=0.5864(2)nm, b=0.6032(2)nm, c=2.972(2)nm.具有半导体性质. 由log(1/ρ)～1/T关系获得其能隙Eg=1.2 eV.它制备简捷，成本低廉，可做为高科技领域的微电子元件.

关键词: 微米管, 纳米管, 正交晶系, 光电极

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