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Single-wall carbon nanotube separations via aqueous two-phase extraction: new prospects enabled by high-throughput
Christopher M Sims1, Ming Zheng1, Jeffrey A Fagan1
1Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 21045, USA. christopher.sims@nist.gov.
Summary
Aqueous two-phase extraction (ATPE) efficiently purifies single-wall carbon nanotubes (SWCNTs). Recent advances accelerate parameter identification for improved SWCNT separation and technology development.
Area of Science:
- Materials Science
- Chemical Engineering
- Nanotechnology
Background:
- Single-wall carbon nanotubes (SWCNTs) are crucial for advanced technologies.
- Purifying specific SWCNT species from mixtures is challenging.
- Aqueous two-phase extraction (ATPE) offers a scalable purification method.
Purpose of the Study:
- To review recent metrological advancements in ATPE for SWCNT purification.
- To discuss the potential of these developments for optimizing SWCNT separation.
- To highlight progress towards realizing SWCNT-enabled technologies.
Main Methods:
- Review of recent literature on ATPE for SWCNT separation.
- Analysis of metrological developments impacting separation efficiency and fidelity.
- Discussion of parameter identification strategies in ATPE.
Main Results:
- ATPE is an effective and scalable method for SWCNT purification.
- Recent metrological advances significantly improve the speed and fidelity of ATPE separations.
- Faster identification of optimal solution parameters enhances SWCNT separation.
Conclusions:
- Advanced metrology is revolutionizing SWCNT purification via ATPE.
- Optimized ATPE processes are key to scaling up SWCNT production.
- Further development will accelerate the realization of SWCNT-based technologies.

