期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 24, 页码 9260-9271出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta00628c
关键词
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资金
- EPSRC, UK - DTA [EP/P504953/1, EP/P505550/1, EP/J014974/1]
- Pharmacat Consortium
- Engineering and Physical Sciences Research Council [EP/J014974/1, EP/K039946/1] Funding Source: researchfish
- EPSRC [EP/K039946/1, EP/J014974/1] Funding Source: UKRI
Hybrid polymer/metal organic framework (MOF) membranes have been prepared using either a mixed matrix membrane (MMM) or in situ growth (ISG) approach and were evaluated for application in organic solvent nanofiltration (OSN). MMMs were produced by dispersing pre-formed particles of the MOF HKUST-1 in polyimide P84 dope solutions. MMMs demonstrated both (i) higher rejections of styrene oligomers and (ii) lower flux decline than the polymeric control membranes. Furthermore, an alternative hybrid membrane fabrication methodology - in situ growth (ISG) of HKUST-1 in integrally skinned asymmetric polymer membrane supports - has been successfully demonstrated. Ultrafiltration support membranes were submerged in HKUST-1 precursor solutions in order to promote the growth of MOF within the porous structure of the polymer membranes. The presence of HKUST-1 in the membranes was proven with X-ray powder diffraction (XRPD). Energy-dispersive X-ray spectroscopy (EDX) was used to reveal the distribution of HKUST-1 throughout the ISG membranes, and was found to be even across the surface and throughout the cross-section. The ISG membranes also had higher solute rejections and lower flux decline than the MMMs.
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