Journal
LANGMUIR
Volume 27, Issue 6, Pages 3150-3156Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la104242p
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Funding
- National Science Foundation (NSF) [0348544]
- Department of Energy (DOE) [DE-FG02-07ER46375]
- National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH) [R01DA018822]
- Directorate For Engineering [0348544] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys [0348544] Funding Source: National Science Foundation
- U.S. Department of Energy (DOE) [DE-FG02-07ER46375] Funding Source: U.S. Department of Energy (DOE)
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Electrophoretic transport of proteins cross electrochemically oxidized multi-walled carbon nanotube (MWCNT) membranes has been investigated. A small charged protein, lysozyme, was successfully pumped MWCNT membranes by an electric field while rejecting larger of lysozome was reduced by a factor of about 30 in comparison to bulk mobility and consistent with the production for hindered transport. Mobilities between 0.33 and 1.4 x 10(-9) m(2) V-1 s(-1) were observed and are approximately 10-fold faster than comparable ordered nanoporous membranes and consistent with continuum models. For mixtures of BSA and lysozyme, complete rejection of BSA is seen with electrophoretic separations.
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