5 years ago

Preparation of RE 2 O 2 SO 4 (RE=La, Pr-Lu) microspheres from rare-earth-based infinite coordination polymers

Chungen Li, Yuan Li, Hao Liu, Danyang Ma, Shengliang Zhong, Lei Wang


Rare-earth-based infinite coordination polymer (RE-ICP) spheres with diameters ranging from 50 nm to 2 μm have been prepared using meso-2,3-dimercaptosuccinic acid (DMSA) as ligand under hydrothermal conditions. RE2O2SO4 microspheres with similar morphology were obtained by calcining the corresponding RE-ICP spheres. However, as for Ce-ICP and Sc-ICP, CeO2 and Sc2O3 were obtained. The products were characterized using X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, infrared spectroscopy, laser Raman spectrometry, and energy-dispersive X-ray spectrum. Elemental analysis and inductive coupled plasma atomic emission spectrometer were adopted to study the composition of the Eu-ICP. To explore their potential applications, several samples of the products were selected and their properties were investigated. The Eu-ICP and Eu2O2SO4 microspheres give strong red emissions when excited with a 394-nm ultraviolet light. Furthermore, the Eu-ICP displays a high selectivity for Fe(III). The obtained CeO2 has a strong absorption in the UV region and the Gd2O2SO4 microspheres show paramagnetic behavior.

Graphical abstract

A series of RE2O2SO4 microspheres were prepared using a coordination polymer precursor method.

Publisher URL: https://link.springer.com/article/10.1007/s11051-017-4032-2

DOI: 10.1007/s11051-017-4032-2

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