کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7020211 1455950 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the direct synthesis of Cu(BDC) MOF nanosheets and their performance in mixed matrix membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
On the direct synthesis of Cu(BDC) MOF nanosheets and their performance in mixed matrix membranes
چکیده انگلیسی
High aspect-ratio nanosheets of metal-organic frameworks (MOFs) hold promise for use as selective flakes in gas separation membranes. However, simple and scalable methods for the synthesis of MOF nanosheets have thus far remained elusive. Here, we describe the direct synthesis of Cu(BDC) (BDC2- = 1,4-benzenedicarboxylate) nanosheets with an average lateral size of 2.5 µm and a thickness of 25 nm from a well-mixed solution. Characterization of the nanosheets by powder and thin film X-ray diffraction, electron microscopy, and electron diffraction reveals pronounced structural disorder that may affect their pore structure. Incorporation of the Cu(BDC) nanosheets into a Matrimid polymer matrix results in mixed matrix membranes (MMMs) that exhibit a 70% increase in the CO2/CH4 selectivity compared with that of Matrimid. Analysis of new and previously reported permeation data for Cu(BDC) MMMs using a mathematical model for selective flake composites indicates that further performance improvements could be achieved with the selection of different polymers for use in the continuous phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 549, 1 March 2018, Pages 312-320
نویسندگان
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