کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7020083 | 1455948 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel thin film composite hollow fiber membranes incorporated with carbon quantum dots for osmotic power generation
ترجمه فارسی عنوان
غشاء فیبر توخالی کامپوزیتی نازک رول دارای نقاط کوانتومی کربن برای تولید انرژی اسمزی است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
By means of carbon quantum dots incorporation, we have developed novel thin film composite (TFC) membranes for osmotic power generation. The newly developed TFC membrane exhibits a peak power density as high as 34.20Â W/m2 at 23Â bar using 1.0Â M NaCl and deionized water as the feed pair. To our best knowledge, this is the highest ever power density reported in the literature. The carbon quantum dots (CQDs) are a new class of carbon nanomaterials with advantages of excellent hydrophilicity, low toxicity, environmental friendliness, easy synthesis and low cost. The CQDs are incorporated into the polyamide selective layers via the conventional interfacial polymerization reaction. The effects of incorporating different CQDs and their loadings on membrane morphology, properties and PRO performance have been examined. It is found that the addition of Na+-functionalized CQDs not only increases the existence of hydrophilic oxygen-containing groups and surface area of the polyamide layer, but also changes the morphology with a looser and thinner polyamide network. The TFC membrane comprising 1Â wt% Na-CQD-9 has the optimal performance. Compared with the control, the water flux and power density at 23Â bar increase from 44.52 to 53.54 LMH and 28.44 to 34.20Â W/m2 respectively, while the reverse salt flux remains unchanged.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 551, 1 April 2018, Pages 94-102
Journal: Journal of Membrane Science - Volume 551, 1 April 2018, Pages 94-102
نویسندگان
Wenxiao Gai, Die Ling Zhao, Tai-Shung Chung,