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How does the mechanism of decreasing internal concentration polarization (ICP) using carbon nanotubes (CNTs) work? 


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The mechanism of decreasing internal concentration polarization (ICP) using carbon nanotubes (CNTs) involves leveraging the unique properties of CNTs to enhance water permeability and mitigate the effects of ICP in membrane processes. By incorporating single-walled nanotubes (SWCNTs) in thin film composite (TFC) membranes, the water permeability significantly increases due to strong π-π interactions and reduced membrane structure parameters, leading to higher water flux. Additionally, utilizing entangled single-wall carbon nanotube (SWNT) films as ion-selective membranes in micro-nanofluidic systems can provide insights into the relationship between electrical properties and electrokinetic behavior, contributing to the understanding of ICP mechanisms. The use of CNTs offers a promising strategy to address ICP challenges and improve membrane performance in various applications.

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Entangled single-wall carbon nanotube films act as nanoporous junctions, replacing Nafion membranes, reducing internal concentration polarization in ion concentration polarization systems by enhancing ionic conductance through nanojunctions.
Open accessJournal ArticleDOI
Junsuk Kim, Inhee Cho, Hyomin Lee, Sung Jae Kim 
11 Jul 2017-Scientific Reports
633 Citations
The bifurcated current path in the ICP device enhances surface conduction, initiating ICP layer propagation from different locations based on bulk electrolyte concentration, effectively reducing internal concentration polarization.
Single-walled carbon nanotubes (SWCNTs) interlayer in thin film composite membranes reduces internal concentration polarization (ICP) by enhancing water permeability and mitigating membrane structure parameters, improving water flux significantly.
Not addressed in the paper.

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