期刊
CARBON
卷 106, 期 -, 页码 243-251出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2016.05.016
关键词
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资金
- U.S. Department of Energy, National Energy Technology Laboratory [DE-FE0024015]
- Illinois Clean Coal Institute [15/US-5]
- U.S. Department of Energy [DE-FG02-07ER46453, DE-FG02-07ER46471]
- Micro-Nano-Mechanical Systems cleanroom in the Department of Mechanical Science and Engineering at the University of Illinois at Urbana Champaign
A new class of robust carbon nanotube (CNT) membranes is developed using a scalable chemical vapor deposition method by direct growth of the CNT on a nickel alloy (Hastelloy) mesh with micrometer-sized openings. The developed membranes have a dense, entangled network of CNT with 50-500 nm pore openings and are superhydrophobic. These CNT membranes are resistant to air oxidation up to similar to 500 degrees C and chemical corrosion in concentrated HCl or NaCl solutions. Adhesion and ultrasonication tests suggest that the developed CNT membranes are resistant to delamination and demonstrate a high interfacial bonding of the grown CNT with the alloy substrate. Potential application of the developed CNT-Hastelloy membranes for separation is explored by conducting membrane distillation tests using a 10,000 mg/L NaCl solution. The developed membranes show similar salt rejection performance compared with a carbon bucky paper membrane. These robust carbon nanotube membranes are reusable and expected to be less susceptible to fouling because of their superhydrophobic properties. Furthermore, if fouled, they can be regenerated by heating in air or using an acid wash. (C) 2016 Elsevier Ltd. All rights reserved.
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