Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system

Wu, Xiaoli; Hao, Lan; Zhang, Jiakui; Zhang, Xiang; Wang, Jingtao; Liu, Jindun

doi:10.1016/j.memsci.2016.05.048

Cited by 165 publications

(63 citation statements)

References 50 publications

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“…These surface terminations endow the Ti 3 C 2 T x membrane good hydrophilicity (proved by the contact angle characterization in Figure S8), which promotes the water molecular adsorption and permeation during separation process. [18] In addition, the Ti 3 C 2 T x nanosheets with terminating OH, O, and Fgroups can be ionized in asteam environment to exhibit charged surface. As shown in Figure S9, aw ell-dispersed Ti 3 C 2 T x colloidal solution gives azeta potential of À25 mV at pH 7.…”

Section: Forschungsartikelmentioning

confidence: 99%

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

et al. 2020

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The uncontrolled release of antibiotics and pharmaceuticals into the environment is aw orldwide increasing problem. Thus,h ighly efficient treatment technologies for wastewater are urgently needed. In this work, seven kinds of typical antibiotics (including water and alcohol soluble ones) are successfully separated from the corresponding aqueous and ethanolic solutions using highly regular laminated membranes. Our membranes are assembled with 2-4 mmt itanium carbide nanosheets.T he solvent permeance through such titanium carbide membrane is one order of magnitude higher than that through most polymeric nanofiltration membranes with similar antibiotics rejection. This high flux is due to the regular two-dimensional (2D) structure resulting from the large aspect ratio of titanium carbide nanosheets.M oreover,t he electrostatic interaction between the surface terminations and the antibiotics also affects the rejection and enhances the antifouling property.S uch2 Dt itanium carbide membranes further broaden the application scope of laminated materials for separation and purification of high value added drugs in academia and industry.

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Section: Forschungsartikelmentioning

confidence: 99%

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

et al. 2020

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“…Significant research efforts are being devoted to the fabrication of hybrid materials that surpass the permeability-selectivity upper bound. For example, Wu and coworkers incorporated MXenes nanosheets in hydrophilic poly(ethyleneimine) (PEIm) and hydrophobic silicon rubber (PDMS) (Wu et al, 2016 ). MXenes, first reported by Naguib et al in 2014 , are 2-D inorganic structures consisting of a thin layer of transition metals (Naguib et al, 2014 ).…”

Section: Recent Advances and Future Directions In Osnmentioning

confidence: 99%

“…The resulting membranes were mechanically robust and exhibited higher alcohol permeability and much higher alcohol selectivity relative to neat polymers, thus surpassing the permeability-selectivity upper bound. Specifically, MXenes nanosheets contain polar -OH groups which enhance alcohol sorption and, based on the solution-diffusion model, alcohol permeability (Wu et al, 2016 ). For example, isopropanol permeability in PDMS-MXenes membranes is 162% higher than in neat PDMS.…”

Section: Recent Advances and Future Directions In Osnmentioning

confidence: 99%

Advances in Organic Solvent Nanofiltration Rely on Physical Chemistry and Polymer Chemistry

Galizia

Bye

2018

Front. Chem.

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The vast majority of industrial chemical synthesis occurs in organic solution. Solute concentration and solvent recovery consume ~50% of the energy required to produce chemicals and pose problems that are as relevant as the synthesis process itself. Separation and purification processes often involve a phase change and, as such, they are highly energy-intensive. However, novel, energy-efficient technologies based on polymer membranes are emerging as a viable alternative to thermal processes. Despite organic solvent nanofiltration (OSN) could revolutionize the chemical, petrochemical, food and pharmaceutical industry, its development is still in its infancy for two reasons: (i) the lack of fundamental knowledge of elemental transport phenomena in OSN membranes, and (ii) the instability of traditional polymer materials in chemically challenging environments. While the latter issue has been partially solved, the former was not addressed at all. Moreover, the few data available about solute and solvent transport in OSN membranes are often interpreted using inappropriate theoretical tools, which contributes to the spread of misleading conclusions in the literature. In this review we provide the state of the art of organic solvent nanofiltration using polymeric membranes. First, theoretical models useful to interpret experimental data are discussed and some misleading conclusions commonly reported in the literature are highlighted. Then, currently available materials are reviewed. Finally, materials that could revolutionize OSN in the future are identified. Among the possible applications of OSN, isomers separation could open a new era in chemical engineering and polymer science in the years to come.

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“…When this membrane was incorporated into two typical polymer matrixes, hydrophilic polyethyleneimine (PEI) and hydrophobic polydimethylsiloxane (PDMS), the uniformly dispersed Ti 3 C 2 T x nanosheets enhanced the thermal/ mechanical stabilities and solvent resistance of the polymerbased membranes. 22 Wang et al proposed a type of 2D lamellar membrane consisting of Ti 3 C 2 T x MXene nanosheets and nanosized Fe(OH) 3 supported on an anode, aluminum oxide (AAO) substrate. The MXene membrane with an extremely short transport pathway and large amounts of nanochannels showed excellent water permeance (more than 1000 L m À2 h À1 ) and a favorable rejection rate (over 90%) for molecules with sizes around 2.5 nm using a lter ask under a vacuum of 0.1 MPa.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a new 2D MXene/PES composite membrane with excellent hydrophilicity and high flux

et al. 2017

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Polymer-Ti3C2Tx composite membranes to overcome the trade-off in solvent resistant nanofiltration for alcohol-based system

Cited by 165 publications

References 50 publications

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

Advances in Organic Solvent Nanofiltration Rely on Physical Chemistry and Polymer Chemistry

Preparation of a new 2D MXene/PES composite membrane with excellent hydrophilicity and high flux

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