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Luminescent materials of covalent grafting lanthanide complexes to the synthetic clays
摘要： Lanthanide complex-based luminescent organic-inorganic hybrid materials are highly interesting for a broad range of application fields. The combination of lanthanide complexes with the synthetic clay, Laponite, is now attracting the interest of scientists due to the unique features of the synthetic clay. However, most of the reported literatures are involved with the adsorption of lanthanide complexes on the clay particles. Taking the covalent incorporation of lanthanide complex into clay and satisfying the further coordinate with central lanthanide ion into account, herein, we reported a facile strategy of covalent grafting lanthanide complexes to the clay via the reaction of the terminal triethoxy groups of triethoxysilylated ligand (phenSi) and the surface OH groups of the clay. The successful grafting of the complexes was confirmed by the FT-IR spectra, 29Si solid-state NMR spectra and the luminescent data. And the nitrogen atoms of Phen moieties which are covalently grafted to the clay provide the chance to prepare luminescent hybrid materials with larger coordination number.
关键词： covalent grafting,lanthanide complexes,Laponite,luminescent materials
更新于2025-11-14 15:18:02
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Effect of Calcination Temperature in Preparation of ZnO-SiO2/Laponite and its Physical Character and Photocatalytic Activity
摘要： ZnO-SiO2/laponite was prepared by sol-gel preparation procedure consit of SiO2 pillarization to laponite followed by ZnO dispersion by using zinc acetate as precursor. The obtained material was characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectrometry, diffuse reflectance UV-visible (DRUV-visible) and N2 adsorption-desorption analysis. The photocatalytic performance of the material in decolorization of methylene blue was also investigated. Compared with ZnO-SiO2 nanoparticles, it is concluded that ZnO-SiO2/laponite possess higher photocatalytic activity and influenced by calcination temperature.
关键词： Photocatalyst,Pillarization,Laponite,Clay,ZnO-SiO2
更新于2025-09-09 09:28:46