Counter-ion Dependent, Longitudinal Unzipping of Multi-Walled Carbon Nanotubes to Highly Conductive and Transparent Graphene Nanoribbons View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2015-05

AUTHORS

Dhanraj B Shinde, Mainak Majumder, Vijayamohanan K Pillai

ABSTRACT

Here we report for the first time, a simple hydrothermal approach for the bulk production of highly conductive and transparent graphene nanoribbons (GNRs) using several counter ions from K2SO4, KNO3, KOH and H2SO4 in aqueous media, where, selective intercalation followed by exfoliation gives highly conducting GNRs with over 80% yield. In these experiments, sulfate and nitrate ions act as a co-intercalant along with potassium ions resulting into exfoliation of multi-walled carbon nanotubes (MWCNTs) in an effective manner. The striking similarity of experimental results in KOH and H2SO4 that demonstrates partially damaged MWCNTs, implies that no individual K(+), SO4(2-) ion plays a key role in unwrapping of MWCNTs, rather this process is largely effective in the presence of both cations and anions working in a cooperative manner. The GNRs can be used for preparing conductive 16 kΩsq(-1), transparent (82%) and flexible thin films using low cost fabrication method. More... »

PAGES

4363

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/srep04363

DOI

http://dx.doi.org/10.1038/srep04363

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1003303912

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/24621526


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