@article{7de2ccdd128448e0b3d763884b341eb2,
title = "Robust carbon nanotube membranes directly grown on Hastelloy substrates and their potential application for membrane distillation",
abstract = "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 ∼500 °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.",
author = "Ali Ashraf and Hafiz Salih and Sungwoo Nam and Dastgheib, {Seyed A.}",
note = "Funding Information: The authors are grateful for the support provided by U.S. Department of Energy, National Energy Technology Laboratory (Cooperative Agreement DE-FE0024015 ), and Illinois Clean Coal Institute (Project 15/US-5 ). This document has not been subjected to the review of the funding agencies and therefore does not necessarily reflect their views. Any mention of trade names or commercial products does not constitute endorsement or recommendation for use. Some material characterization tests were carried out in the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois, which are partially supported by the U.S. Department of Energy under grants DE-FG02-07ER46453 and DE-FG02-07ER46471 , and in the Micro-Nano-Mechanical Systems cleanroom in the Department of Mechanical Science and Engineering at the University of Illinois at Urbana Champaign. We would like to thank our colleagues from the Applied Research Laboratory of the Illinois State Geological Survey: Hong Lu for conducting thermogravimetric analysis tests and Ruth Kaplan for surface area analysis. We would also like to thank Richard Haasch from Frederick Seitz Materials Research Laboratory for his help during X-ray photoelectron spectroscopy measurements, and Scott Robinson and Katherine Wallace from Beckman Institute for their help during transmission electron microscopy measurements. Assistance of Jonghyun Choi and Keong Yong for SEM analysis of selected samples is gratefully acknowledged. Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd. All rights reserved.",
year = "2016",
month = sep,
day = "1",
doi = "10.1016/j.carbon.2016.05.016",
language = "English (US)",
volume = "106",
pages = "243--251",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",
}