Control of Partial Coalescence of Self-Assembled Metal Nano-Particles across Lyotropic Liquid Crystals Templates towards Long Range Meso-Porous Metal Frameworks DesignReport as inadecuate


Control of Partial Coalescence of Self-Assembled Metal Nano-Particles across Lyotropic Liquid Crystals Templates towards Long Range Meso-Porous Metal Frameworks Design


Control of Partial Coalescence of Self-Assembled Metal Nano-Particles across Lyotropic Liquid Crystals Templates towards Long Range Meso-Porous Metal Frameworks Design - Download this document for free, or read online. Document in PDF available to download.

Deakin University, Geelong, Australia, Institute for Frontier Materials, 75 Pigdons Road, Waurn Ponds Vic 3216, Australia





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Academic Editors: Jordi Sort and Eva Pellicer

Abstract The formation of purely metallic meso-porous metal thin films by partial interface coalescence of self-assembled metal nano-particles across aqueous solutions of Pluronics triblock lyotropic liquid crystals is demonstrated for the first time. Small angle X-ray scattering was used to study the influence of the thin film composition and processing conditions on the ordered structures. The structural characteristics of the meso-structures formed demonstrated to primarily rely on the lyotropic liquid crystal properties while the nature of the metal nano-particles used as well as the their diameters were found to affect the ordered structure formation. The impact of the annealing temperature on the nano-particle coalescence and efficiency at removing the templating lyotropic liquid crystals was also analysed. It is demonstrated that the lyotropic liquid crystal is rendered slightly less thermally stable, upon mixing with metal nano-particles and that low annealing temperatures are sufficient to form purely metallic frameworks with average pore size distributions smaller than 500 nm and porosity around 45% with potential application in sensing, catalysis, nanoscale heat exchange, and molecular separation. View Full-Text

Keywords: meso-porous metal framework; lyotropic liquid crystals templating; metal nano-particle coalescence; SAXS ordered phase shifts; interface nano-particle coalescence meso-porous metal framework; lyotropic liquid crystals templating; metal nano-particle coalescence; SAXS ordered phase shifts; interface nano-particle coalescence





Author: Ludovic F. Dumée * , Jean-Baptiste Lemoine, Alice Ancel, Nishar Hameed, Li He and Lingxue Kong

Source: http://mdpi.com/



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