Citation: Shen Ruo-Fan, Wang Fa-Yang, Xiong Zhao-Xian, Xue Ru. Bi-Ba-Fe-O-Cl Micro-nanotube of Tetra nal Prism Crystal[J]. Acta Physico-Chimica Sinica, ;2001, 17(09): 824-827. doi: 10.3866/PKU.WHXB20010913
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A micronanotube of new inorganic compound with external shape of tetra nal prism has been synthesized. It is made of transitional metal oxychloride. From SEM detection, the micronanotube 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(ad)). It has been prepared by solid state reaction in a direct growth way. From XRD, TEM and SEM determination, the micronanotube 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 micronanotube 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 micronanotube material by solid state reaction is simple in operation and cheap in cost.
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