Highly‐Selective Harvesting of (6,4) SWCNTs Using the Aqueous Two‐Phase Extraction Method and Nonionic Surfactants

Author:

Podlesny Blazej1,Hinkle Kevin R.2,Hayashi Keita3,Niidome Yoshiaki3,Shiraki Tomohiro3,Janas Dawid1ORCID

Affiliation:

1. Department of Organic Chemistry Bioorganic Chemistry and Biotechnology Silesian University of Technology B. Krzywoustego 4 Gliwice 44‐100 Poland

2. Department of Chemical and Materials Engineering University of Dayton Dayton OH 45469 USA

3. Department of Applied Chemistry Graduate School of Engineering Kyushu University 744 Motooka, Nishi‐ku Fukuoka 819‐0395 Japan

Abstract

AbstractMonochiral single‐walled carbon nanotubes (SWCNTs) are indispensable for advancing the technology readiness level of nanocarbon‐based concepts. In recent times, many separation techniques have been developed to obtain specific SWCNTs from raw unsorted materials to catalyze the development in this area. This work presents how the aqueous two‐phase extraction (ATPE) method can be enhanced for the straightforward isolation of (6,4) SWCNTs in one step. Introducing nonionic surfactant into the typically employed mixture of anionic surfactants, which drive the partitioning, is essential to increasing the ATPE system's resolution. A thorough analysis of the parameter space by experiments and modeling reveals the underlying interactions between SWCNTs, surfactants, and phase‐forming agents, which drive the partitioning. Based on new insight gained on this front, a separation mechanism is proposed. Notably, the developed method is highly robust, which is proven by isolating (6,4) SWCNTs from several raw SWCNT materials, including SWCNT waste generated over the years in the laboratory.

Funder

Narodowym Centrum Nauki

Ohio Supercomputer Center

Publisher

Wiley

Subject

General Physics and Astronomy,General Engineering,Biochemistry, Genetics and Molecular Biology (miscellaneous),General Materials Science,General Chemical Engineering,Medicine (miscellaneous)

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