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High-performance reverse osmosis CNT/polyamide nanocomposite membrane by controlled interfacial interactions.
ACS Appl Mater Interfaces 2014; 6(4):2819-29AA

Abstract

Polyamide reverse osmosis (RO) membranes with carbon nanotubes (CNTs) are prepared by interfacial polymerization using trimesoyl chloride (TMC) solutions in n-hexane and aqueous solutions of m-phenylenediamine (MPD) containing functionalized CNTs. The functionalized CNTs are prepared by the reactions of pristine CNTs with acid mixture (sulfuric acid and nitric acid of 3:1 volume ratio) by varying amounts of acid, reaction temperature, and reaction time. CNTs prepared by an optimized reaction condition are found to be well-dispersed in the polyamide layer, which is confirmed from atomic force microscopy, scanning electron microscopy, and Raman spectroscopy studies. The polyamide RO membranes containing well-dispersed CNTs exhibit larger water flux values than polyamide membrane prepared without any CNTs, although the salt rejection values of these membranes are close. Furthermore, the durability and chemical resistance against NaCl solutions of the membranes containing CNTs are found to be improved compared with those of the membrane without CNTs. The high membrane performance (high water flux and salt rejection) and the improved stability of the polyamide membranes containing CNTs are ascribed to the hydrophobic nanochannels of CNTs and well-dispersed states in the polyamide layers formed through the interactions between CNTs and polyamide in the active layers.

Authors+Show Affiliations

School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University , 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24467487

Citation

Kim, Hee Joong, et al. "High-performance Reverse Osmosis CNT/polyamide Nanocomposite Membrane By Controlled Interfacial Interactions." ACS Applied Materials & Interfaces, vol. 6, no. 4, 2014, pp. 2819-29.
Kim HJ, Choi K, Baek Y, et al. High-performance reverse osmosis CNT/polyamide nanocomposite membrane by controlled interfacial interactions. ACS Appl Mater Interfaces. 2014;6(4):2819-29.
Kim, H. J., Choi, K., Baek, Y., Kim, D. G., Shim, J., Yoon, J., & Lee, J. C. (2014). High-performance reverse osmosis CNT/polyamide nanocomposite membrane by controlled interfacial interactions. ACS Applied Materials & Interfaces, 6(4), pp. 2819-29. doi:10.1021/am405398f.
Kim HJ, et al. High-performance Reverse Osmosis CNT/polyamide Nanocomposite Membrane By Controlled Interfacial Interactions. ACS Appl Mater Interfaces. 2014 Feb 26;6(4):2819-29. PubMed PMID: 24467487.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - High-performance reverse osmosis CNT/polyamide nanocomposite membrane by controlled interfacial interactions. AU - Kim,Hee Joong, AU - Choi,Kwonyong, AU - Baek,Youngbin, AU - Kim,Dong-Gyun, AU - Shim,Jimin, AU - Yoon,Jeyong, AU - Lee,Jong-Chan, Y1 - 2014/01/27/ PY - 2014/1/29/entrez PY - 2014/1/29/pubmed PY - 2014/1/29/medline SP - 2819 EP - 29 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 6 IS - 4 N2 - Polyamide reverse osmosis (RO) membranes with carbon nanotubes (CNTs) are prepared by interfacial polymerization using trimesoyl chloride (TMC) solutions in n-hexane and aqueous solutions of m-phenylenediamine (MPD) containing functionalized CNTs. The functionalized CNTs are prepared by the reactions of pristine CNTs with acid mixture (sulfuric acid and nitric acid of 3:1 volume ratio) by varying amounts of acid, reaction temperature, and reaction time. CNTs prepared by an optimized reaction condition are found to be well-dispersed in the polyamide layer, which is confirmed from atomic force microscopy, scanning electron microscopy, and Raman spectroscopy studies. The polyamide RO membranes containing well-dispersed CNTs exhibit larger water flux values than polyamide membrane prepared without any CNTs, although the salt rejection values of these membranes are close. Furthermore, the durability and chemical resistance against NaCl solutions of the membranes containing CNTs are found to be improved compared with those of the membrane without CNTs. The high membrane performance (high water flux and salt rejection) and the improved stability of the polyamide membranes containing CNTs are ascribed to the hydrophobic nanochannels of CNTs and well-dispersed states in the polyamide layers formed through the interactions between CNTs and polyamide in the active layers. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/24467487/High_performance_reverse_osmosis_CNT/polyamide_nanocomposite_membrane_by_controlled_interfacial_interactions_ L2 - https://dx.doi.org/10.1021/am405398f DB - PRIME DP - Unbound Medicine ER -