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Related Concept Videos

Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...

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Large-Scale MXene Membrane Fabrication via Nonsolvent Phase Separation.

Mostafa Dadashi Firouzjaei1,2, Zahra Zandi2, Hesam Jafarian1

  • 1Department of Civil, Construction, and Environmental Engineering, University of Alabama, Tuscaloosa, Alabama, USA.

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Summary

This study introduces a scalable roll-to-roll process for manufacturing MXene/polysulfone ultrafiltration membranes. The new method enhances water flux and contaminant rejection for practical water purification applications.

Keywords:
Ti3C2Tx‐polysulfone membranesindustrial‐scale fabricationmixed‐matrix membranesnonsolvent induced phase separationroll‐to‐roll processingwater purification

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Environmental Science

Background:

  • Two-dimensional (2D) MXenes show promise for membrane applications due to their hydrophilicity and antifouling properties.
  • Scalable fabrication of MXene-based membranes is a significant hurdle for practical implementation.

Purpose of the Study:

  • To develop a scalable manufacturing process for MXene/polysulfone mixed-matrix ultrafiltration membranes.
  • To evaluate the performance of membranes fabricated using the novel roll-to-roll nonsolvent-induced phase separation (R2R-NIPS) method.

Main Methods:

  • Fabrication of Ti3C2Tx/polysulfone (PSF) mixed-matrix ultrafiltration membranes using a roll-to-roll nonsolvent-induced phase separation (R2R-NIPS) process.
  • Characterization of membrane morphology, wettability, and surface charge.
  • Performance testing for water flux and humic acid rejection.

Main Results:

  • Successful fabrication of large-format membranes (1.65 m²) with 1 wt% MXene incorporation.
  • Enhanced membrane properties: increased water flux (31% higher than pristine PSF), improved humic acid rejection (97.6%), reduced contact angle (62°), and more negative surface charge.
  • Demonstrated low batch-to-batch variability (<5%) and reproducible results.

Conclusions:

  • The R2R-NIPS process offers a feasible and scalable route for producing high-performance MXene-based membranes for water purification.
  • The developed methodology provides practical parameter insights for industrial-scale MXene membrane production.
  • This advancement addresses the challenge of translating laboratory-scale MXene membrane technology to commercially viable manufacturing.