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Self-assembled intercalation of 8-hydroxyquinoline into metal ions exchanged magadiites via solid-solid reaction and their optical properties.
- Source :
-
Applied Clay Science . Jun2019, Vol. 174, p47-56. 10p. - Publication Year :
- 2019
-
Abstract
- Abstract This study aimed at investigating the molecular level organization and photoluminescence in the interlayer space of magadiite (mag) synthesized by the process of solid-state intercalation. Host-guest composites were prepared by an easy grinding process without other operation. Detailed structural investigations were performed by powder X-ray diffraction (XRD), inductively coupled plasma atomic emission spectroscopy (ICP-AES), energy-dispersive X-ray spectrometer (EDS), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), Thermo-gravimetric analysis and differential thermal analysis (TGA/DTA), field emission scanning electron microscopy (FE-SEM), Ultraviolet-visible spectroscopy (UV–Vis), photoluminescence (PL) and inverted fluorescence microscope. Results confirmed that 8-hydroxyquinoline (8Hq) was intercalated in the interlayer space of mag in the presence of various metal ions (Ca2+, Zn2+ and Mn2+) inside. Basal spacings between silicate layers were controlled by exchanged metal ions and decorated 8Hq. Solid-state intercalation resulted in the lower proportion of intercalated 8Hq, but good luminescence was observed by PL. The complexes in the interlayer space showed special fluorescence properties. A speculative mechanism was proposed for reaction by solid-solid intercalation. This study provided a message for understanding the functional properties of composites 8Hq/Ca, Zn, Mn-mags, such as loading capacity and photoluminescence properties. Graphical abstract Unlabelled Image Highlights • The intercalation of 8Hq into Ca-, Zn-, Mn-magadiite were prepared. • A speculate mechanism is proposed by the combination of solid-solid intercalation. • The addition of the mag influence the fluorescence of the metal-chelates in the confined spaces. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01691317
- Volume :
- 174
- Database :
- Academic Search Index
- Journal :
- Applied Clay Science
- Publication Type :
- Academic Journal
- Accession number :
- 135957107
- Full Text :
- https://doi.org/10.1016/j.clay.2019.03.024