کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7019587 | 1455935 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Scalable graphene composite membranes for enhanced ion selectivity
ترجمه فارسی عنوان
غشای کامپوزیت گرافن مقیاس پذیر برای انتخاب یون افزایش یافته
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کلمات کلیدی
غشای گرافن، غشای انتخابی یونی، جداسازی یونها، اسمز معکوس
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Unintended defects are a significant problem for mass production of graphene membranes. Herein, we report a method to fabricate scalable CVD graphene polymer membranes through the formation of a polysulfone (PSf) supporting layer, which is capable of duplicating the Cu morphology. Unintended defects were limited by minimizing defects associated with graphene wrinkles and eliminating polymer residues used in the transfer process. Consequently, the KCl leakage by diffusion of raw graphene membranes fabricated with this method was only ~ 0.5% that of the supporting membrane; there was also no water flux under a pressure of 20â¯bar. Excellent ion selectivity was achieved by controlling the duration of H2 plasma treatment. The selectivity of KCl over NaCl was 2.61, the selectivity of KCl over MgCl2 was 15.62, and the selectivity of NaCl over MgCl2 was 5.98.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 564, 15 October 2018, Pages 159-165
Journal: Journal of Membrane Science - Volume 564, 15 October 2018, Pages 159-165
نویسندگان
Siying Li, Jung-Hun Lee, Qicheng Hu, Tae-Sik Oh, Ji-Beom Yoo,