High Performance and Chlorine Resistant Carbon Nanotube/Aromatic Polyamide Reverse Osmosis Nanocomposite Membrane

Rodolfo Cruz-Silva, Shigeki Inukai, Takumi Araki, Aaron Morelos-Gomez, Josue Ortiz-Medina, Kenji Takeuchi, Takuya Hayashi, Akihiko Tanioka, Syogo Tejima, Toru Noguchi, Mauricio Terrones Maldonado, Morinobu Endo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Efficient water desalination constitutes a major challenge for the next years and reverse osmosis membranes will play a key role to achieve this target. In this work, a high-performance reverse osmosis nanocomposite membrane was prepared by interfacial polymerization in presence of multiwalled carbon nanotubes. The effect of carbon nanotubes on the chlorine resistance, antifouling and desalination performance of the nanocomposite membranes was studied. We found that the addition of carbon nanotubes not only improved the membrane performance in terms of flow and antifouling, but also inhibited the chlorine degradation of these membranes. Several reports have acknowledged the benefits of adding carbon nanotubes to aromatic PA nanocomposite membranes, but little attention has been paid to the mechanisms related to the improvement of flow rate, selectivity and chlorine tolerance. We carried out a comprehensive study of the chemical and physical effects of carbon nanotubes on the fully crosslinked polyamide network. The chemical structure, chlorine resistance and membrane degradation was studied by several analytical techniques, permeation and fouling studies, whereas the microstructure of the nanocomposite was studied by small and wide angle X-ray scattering, high resolution transmission electron microscopy, and molecular dynamics. We found that the addition of the nanotube affects the interfacial polymerization, resulting in a polymer network with smaller pore size and higher sodium and chlorine rejection. We simulated the hydration of the membrane in seawater and found that the radial distribution function of water confined in the pores of the nanocomposite membrane exhibited smaller clusters of water molecules, thus suggesting a dense membrane structure. We analysed the network mobility and found that the nanotube provides mechanical stability to the polymer matrix. This study presents solid evidence towards more efficient and robust reverse osmosis membranes using carbon nanotubes as mechanical reinforcing and chlorine protection additive.

Original languageEnglish (US)
Pages (from-to)1469-1476
Number of pages8
JournalMRS Advances
Volume1
Issue number20
DOIs
StatePublished - Jan 1 2016

Fingerprint

reverse osmosis
Carbon Nanotubes
Chlorine
Nylons
Reverse osmosis
Polyamides
chlorine
Carbon nanotubes
Nanocomposites
nanocomposites
carbon nanotubes
membranes
Membranes
Osmosis membranes
antifouling
Desalination
Nanotubes
Water
Polymerization
nanotubes

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Cruz-Silva, R., Inukai, S., Araki, T., Morelos-Gomez, A., Ortiz-Medina, J., Takeuchi, K., ... Endo, M. (2016). High Performance and Chlorine Resistant Carbon Nanotube/Aromatic Polyamide Reverse Osmosis Nanocomposite Membrane. MRS Advances, 1(20), 1469-1476. https://doi.org/10.1557/adv.2016.232
Cruz-Silva, Rodolfo ; Inukai, Shigeki ; Araki, Takumi ; Morelos-Gomez, Aaron ; Ortiz-Medina, Josue ; Takeuchi, Kenji ; Hayashi, Takuya ; Tanioka, Akihiko ; Tejima, Syogo ; Noguchi, Toru ; Terrones Maldonado, Mauricio ; Endo, Morinobu. / High Performance and Chlorine Resistant Carbon Nanotube/Aromatic Polyamide Reverse Osmosis Nanocomposite Membrane. In: MRS Advances. 2016 ; Vol. 1, No. 20. pp. 1469-1476.
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Cruz-Silva, R, Inukai, S, Araki, T, Morelos-Gomez, A, Ortiz-Medina, J, Takeuchi, K, Hayashi, T, Tanioka, A, Tejima, S, Noguchi, T, Terrones Maldonado, M & Endo, M 2016, 'High Performance and Chlorine Resistant Carbon Nanotube/Aromatic Polyamide Reverse Osmosis Nanocomposite Membrane', MRS Advances, vol. 1, no. 20, pp. 1469-1476. https://doi.org/10.1557/adv.2016.232

High Performance and Chlorine Resistant Carbon Nanotube/Aromatic Polyamide Reverse Osmosis Nanocomposite Membrane. / Cruz-Silva, Rodolfo; Inukai, Shigeki; Araki, Takumi; Morelos-Gomez, Aaron; Ortiz-Medina, Josue; Takeuchi, Kenji; Hayashi, Takuya; Tanioka, Akihiko; Tejima, Syogo; Noguchi, Toru; Terrones Maldonado, Mauricio; Endo, Morinobu.

In: MRS Advances, Vol. 1, No. 20, 01.01.2016, p. 1469-1476.

Research output: Contribution to journalArticle

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AU - Cruz-Silva, Rodolfo

AU - Inukai, Shigeki

AU - Araki, Takumi

AU - Morelos-Gomez, Aaron

AU - Ortiz-Medina, Josue

AU - Takeuchi, Kenji

AU - Hayashi, Takuya

AU - Tanioka, Akihiko

AU - Tejima, Syogo

AU - Noguchi, Toru

AU - Terrones Maldonado, Mauricio

AU - Endo, Morinobu

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N2 - Efficient water desalination constitutes a major challenge for the next years and reverse osmosis membranes will play a key role to achieve this target. In this work, a high-performance reverse osmosis nanocomposite membrane was prepared by interfacial polymerization in presence of multiwalled carbon nanotubes. The effect of carbon nanotubes on the chlorine resistance, antifouling and desalination performance of the nanocomposite membranes was studied. We found that the addition of carbon nanotubes not only improved the membrane performance in terms of flow and antifouling, but also inhibited the chlorine degradation of these membranes. Several reports have acknowledged the benefits of adding carbon nanotubes to aromatic PA nanocomposite membranes, but little attention has been paid to the mechanisms related to the improvement of flow rate, selectivity and chlorine tolerance. We carried out a comprehensive study of the chemical and physical effects of carbon nanotubes on the fully crosslinked polyamide network. The chemical structure, chlorine resistance and membrane degradation was studied by several analytical techniques, permeation and fouling studies, whereas the microstructure of the nanocomposite was studied by small and wide angle X-ray scattering, high resolution transmission electron microscopy, and molecular dynamics. We found that the addition of the nanotube affects the interfacial polymerization, resulting in a polymer network with smaller pore size and higher sodium and chlorine rejection. We simulated the hydration of the membrane in seawater and found that the radial distribution function of water confined in the pores of the nanocomposite membrane exhibited smaller clusters of water molecules, thus suggesting a dense membrane structure. We analysed the network mobility and found that the nanotube provides mechanical stability to the polymer matrix. This study presents solid evidence towards more efficient and robust reverse osmosis membranes using carbon nanotubes as mechanical reinforcing and chlorine protection additive.

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Cruz-Silva R, Inukai S, Araki T, Morelos-Gomez A, Ortiz-Medina J, Takeuchi K et al. High Performance and Chlorine Resistant Carbon Nanotube/Aromatic Polyamide Reverse Osmosis Nanocomposite Membrane. MRS Advances. 2016 Jan 1;1(20):1469-1476. https://doi.org/10.1557/adv.2016.232