Rapid production of cadmium infinite coordination polymer nanofiber via solvent induced precipitation method

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
M Mohammadikish, K Zamani

Abstract

The precipitation synthesis of cadmium infinite coordination polymer (Cd-ICP) nanofibers with a high degree of uniformity is reported. The elemental analyses (CHN and ICP-OES), energy-dispersive X-ray spectroscopy (EDX) and thermogravimetric analysis (TGA) show that thermally robust monodisperse solid consists of bi-carboxylic acid linker and cadmium ion. The coordination between the Cd2+ ion and bi-carboxylic acid linker was investigated by Fourier transform infrared (FT-IR) spectroscopy. The photoluminescence (PL) properties of the Cd-ICP were studied in comparison with those of the bi-carboxylic acid linker. It was shown that the emission intensity of the Cd-ICP is much stronger than linker due to the structural rigidity after the coordination of linker to Cd ions. The field emission scanning electron microscopy (FE-SEM) results show that after calcination of the Cd-ICP the morphology changed from fiber to hexagonal-like disc. Furthermore, the results of UV-Vis spectroscopy show larger band gap for obtained CdO relative to the bulk counterpart.

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