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2118084 
Book/Book Chapter 
Steel Mesh Coated with Carbon Nanotubes: Its Superhydrophobicity and W/O Emulsion Dewatering Capability 
Lee, CH; Johnson, N; Drelich, J; Yap, YK 
2011 
Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P.O. Box 430 Warrendale PA 15086 United States 
Dense structures of multi-walled carbon nanotubes (CNTs) having a diameter of 10 to 50 nm and length > 5 mu m were grown on a stainless steel (SS) mesh using thermal vapor chemical deposition. This 3-dimensional and porous SS-CNTs substrate was found to be superhydrophobic and superoleophilic, and could serve as phase separation membrane. Water advancing contact angles were 145-150 degrees for water drops suspended on the SS-CNTs mesh in air and oil (gasoline, isooctane). Oil, on the other hand, completely wet the SS-CNTs mesh. Simple filtration tests demonstrate the potential application of the SS-CNTs mesh as a filtration screen in dewatering of the water-in-oil emulsions. 
Emulsions; Filtration; Water drops; Isooctane; Contact angle; Contact; Phase separation; Dewatering