Yao, Hong-Bin and Li, Xiao-Bo and Ai, Si-Yuan and Yu, Shu-Hong (2010) Hydrazine-cadmium tellurite hybrid microcrystals: An efficient precursor to porous cadmium telluride and tellurium architectures through its thermal decomposition. Nano Research, 3 (2). pp. 81-91.
Well-defined platelet-like hydrazine-cadmium tellurite hybrid microcrystals have been synthesized by a solvothermal reaction of cadmium chloride, sodium tellurite, and hydrazine hydrate in a mixed solvent containing n-propylamine and deionized water. The formula of the hybrid platelet-like microcrystals has been proposed based on a combination of powder X-ray diffraction pattern (PXRD), elemental analysis, thermogravimetic analysis (TGA), and X-ray photoelectron spectroscopy (XPS). Controlled thermal decomposition of this hybrid precursor can lead to the formation of porous platelet-like microarchitectures. Pure porous cadmium telluride architectures were obtained by using hydrochloric acid to dissolve CdTeO3 remaining in the sample after thermal decomposition at 450Â°C. In addition, unique nanoporous tellurium architectures were obtained by using hydrochloric acid to dissolve the amorphous Cd(N2H4)TeO3 formed after thermal decomposition at 300 Â°C, followed by an in situ topotactic reaction between the residual three-dimensional (3-D) skeleton of cadmium telluride nanocrystallites s and TeO32â. Brunauer-Emmett-Teller (BET) analysis and a study of the optical properties of these porous cadmium telluride and tellurium materials have also been carried out.
|Subjects:||Material Science > Nanochemistry|
Material Science > Nanostructured materials
|Deposited On:||25 Aug 2010 11:34|
|Last Modified:||25 Aug 2010 11:34|
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