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Nano Research

Article Title

Hydrazine-cadmium tellurite hybrid microcrystals: An efficient precursor to porous cadmium telluride and tellurium architectures through its thermal decomposition

Keywords

Thermal decomposition, hydrazine, hybrid, porous architecture, tellurium

Abstract

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 450 °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 °C, followed by an in situ topotactic reaction between the residual three-dimensional (3-D) skeleton of cadmium telluride nanocrystallites and 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.

Graphical Abstract

Publisher

Tsinghua University Press

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