CdS is an important semiconductor material, and has received much attention. In this paper, we reported a sol gel method for synthesis of CdS nanotube arrays which has not been reported yet. The products were characterized by SEM, TEM and EDS. The CdS nanotube is about 60μm in length, and about 100nm in diameter corresponding to that of the alumina template. The further research is under way.
Hollow Ag2S spheres have been prepared via hydrolyze reaction of Ag2S2O3, which formed from the reaction of AgNO3 with Na2S2O3, in cyclohexane/water/polyglycol emulsion system. It was found that the component of the reaction system has a significant influence on the formation of hollow Ag2S spheres. The possible formation mechanism of the hollow Ag2S spheres in the emusion system was also discussed.
The concentric cable of cobalt nanowires(nanotubes) encapsulated in carbon nanotubes has been prepared by using “ second order template” method, combined with electrodeposition. The products were characterized by SEM, TEM, XRD and Raman, respectively. The C/Co composite nanowires(nanotubes) were about 60μ m in length, and the thickness can be adjusted by changing the reaction conditions. This method could be extended to construct an array of multi layer nanotubes, composed of various metals, encapsulated in carbon nanotubes.
An ordered array of Ni submicrotubes with up to 35 ìm in length has been successfully prepared by electrodeposition in the pores of alumina membrane modified with methyl-?-diethylenetriaminopropyl-dimethoxysilane as pore-wall-modifying agent. Furthermore, using the array of Ni submicrotubes with an alumina membrane support as a "second-order-template", the concentric composite structure of Co wires filling Ni submicrotubes was prepared by electrodeposition method. Magnetization measurements on the array of the Ni submicrotubes and the concentric composite structure of Co wires filling Ni submicrotubes revealed different uniaxial magnetic anisotropy.
