Synthesis of large single crystals of layered titanosilicate JDF-L1 with orthogonally lamellar architecture

Highlights

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Synthesis of JDF-L1 large single crystals with orthogonally lamellar architecture.

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New observations on phase transformation between ETS-10 and JDF-L1.

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Different effects of K⁺ and F⁻ ions on crystal phase and growth orientation.

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Square sheets with 3-dimensions of ca. 15, 15 and 1.5 µm in orthogonal orientations.

Abstract

Facile procedures were reported for synthesis of sizable lamellar JDF-L1 crystals. Phase transformation between ETS-10 and JDF-L1 was experimentally demonstrated founding on the role of K⁺, Na⁺ and F⁻ ions in crystal growth. Factually, K⁺ ions were confirmed not to participate in the crystal growth of JDF-L1. High concentrations of only Na⁺ and F⁻ ions in initial gels facilitated the formation of lamellar JDF-L1 differing from normal JDF-L1 in crystal morphology and unit-cell dimensions.

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Graphical abstract

Keywords

• Sol–gel preparation; 
• Crystal growth; 
• Intergrowth; 
• Large single crystal; 
• Lamellar texture
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      • • • Soure:sciencedirect