Carbon nanotube membranes – Strategies and challenges towards scalable manufacturing and practical separation applications

Rashed, Ahmed O.; Merenda, Andrea; Kondo, Takeshi; Lima, Márcio Dias; Razal, Joselito M.; Kong, Lingxue; Huynh, Chi; Dumée, Ludovic F.

doi:10.1016/j.seppur.2020.117929

Cited by 66 publications

(56 citation statements)

References 332 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this fabrication method a suitable organic solvent is employed to prepare a homogeneous solution of the polymer and the CNTs, which is cast on a substrate or allowed for wet spinning and subsequently immersed in a water bath where the exchange of solvent by coagulant and phase separation occurs resulting in a flat sheet or hollow fiber CNT‐CPS membrane. [ 12,60,64,65 ] ii)The blending method has also been widely employed by several groups to fabricate CNT‐CPS membranes with fine‐tuned separation properties. Similar to the phase inversion method, a homogeneous solution of the polymer and the CNTs is prepared by sonication or mechanical stirring.…”

Section: Types Of Carbon Nanotube Membranesmentioning

confidence: 99%

“…[ 5 ] Among the different types of carbon‐based nanomaterials that have been employed for wastewater remediation, the introduction of carbon nanotubes (CNTs) into advanced membrane separation technologies has emerged as cutting‐edge research in the fields of nanotechnology and materials science. [ 10–12 ] CNTs consist of hollow, 1D tube‐like structures with thin carbon walls, and have nanosized diameters with high aspect ratios. [ 13,14 ] Their unique structure results in excellent intrinsic properties, including large surface area, high aspect ratio, interconnected open pore and layered structure, high chemical and mechanical stabilities, and tunable chemistry, which provide potential for use as adsorbents.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carbon Nanotube Membranes in Water Treatment Applications

Barrejón

Prato

2021

Adv Materials Inter

View full text Add to dashboard Cite

Carbon nanotube (CNT)‐based membranes combine the promising properties of CNTs with the advantages of membrane separation technologies, offering enhanced membrane performance in terms of permeability and selectivity. This review looks at the existing membrane architectures based on CNTs and their main advantages and disadvantages for water treatment applications. The different types of CNT‐based membranes that are reported in the literature are highlighted, as well as their corresponding fabrication methods. Available methodologies for tailoring the final membrane properties and behavior are thoroughly discussed, making special emphasis in chemical modification of the CNT surface. Finally, the most common applications of CNT‐based membranes in water treatment are reviewed, including seawater or brine desalination, oil–water separation, removal of heavy metals, and organic pollutants. The main limitations and perspectives of CNT‐based membranes are also briefly outlined.

show abstract

Section: Types Of Carbon Nanotube Membranesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Membranes in Water Treatment Applications

Barrejón

Prato

2021

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…[26] The well-defined and atomically smooth structure of single walled carbon nanotubes (SWCNTs) has made them a favorite choice as both an experimental and theoretical system for studying pore mediated water and ion transportation. Nanofluidics in carbon nanotube membranes has been reviewed recently [27] and in the following I will limit the discussion to a few key features only.…”

Section: Water and Ions In Smooth Homogenous Nanoconduitsmentioning

confidence: 99%

Comments on Ion Selectivity at the Crossroad between Biology and Biomimetics

Hélix‐Nielsen

2021

Adv Materials Technologies

View full text Add to dashboard Cite

with specific ion selectivity (e.g., between Na + , K + , Mg 2+ , and Cl -). In the following I will briefly review some aspects of water and ion transport in confined structures with a particular perspective on the transport properties of planar aperture-type engineered carbon-based structures and their biological counterparts Ion-Selective MembranesEfficient ion-selective membranes have potential in a number of technological applications. These include electrodialysis for water desalination and salt pre-concentration; electrolysis for chlorine-alkaline production; and diffusion dialysis for acid and base recovery from wastewater. [3] New developments also include continuous electro-deionization for production of ultrapure water; conversion of chemical to

show abstract

“…Since the introduction of the TFN concept in 2007, various types of nanomaterials ranging from carbon allotropes, metal and oxide nanoparticles, cellulose nanocrystals, and both inorganic and organic crystalline frameworks have been incorporated into membrane materials, offering different functionalities as well as surface properties. [5][6][7][8][9][10] The incorporation of nanomaterials has been found to alter the PA layer cross-linking levels and thus free volume distribution across the layer. 11 Control over the IP chemistry has also enabled the finetuning of morphological features, such as thickness, pore size and roughness, and surface properties, including the surface charge and hydrophilicity, resulting in materials with higher permeability and selectivity, as well as stronger antifouling properties.…”

Section: Introductionmentioning

confidence: 99%