Low Temperature Physics: 47, 206 (2021); https://doi.org/10.1063/10.0003520
Fizika Nizkikh Temperatur: Volume 47, Number 3 (March 2021), p. 227-234    ( to contents , go back )

Composite films of graphene oxide with semiconducting carbon nanotubes: Raman spectroscopy characterization

N. V. Kurnosov and V. A. Karachevtsev

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine Kharkiv 61103, Ukraine
E-mail: n.kurnosov@ilt.kharkov.ua
pos Анотація:799

Received October 16, 2020, published online January 26, 2021

Abstract

Noncovalent interaction between semiconducting single-walled carbon nanotubes (SWNTs) and graphene oxide (GO) in composite films (GO-SWNTs) was analyzed by Raman spectroscopy in the range of D and G modes (1170–1780 cm–1). Comparison between Raman spectra of composite film and single-component GO and SWNTs films showed that the interaction between GO and SWNTs is accompanied by a band broadening and spectral shifting. Observed spectral transformations are attributed to charge transfer between GO and SWNTs as well as a deformation of carbon surfaces which occurs in the composite. Spectral measurements of composite GO-SWNTs film with biological globular molecules (the enzyme glucoseoxidase) showed that these molecules weaken mechanical stress of GO on the nanotubes.

Key words: graphene oxide, single-walled carbon nanotubes, composite films, noncovalent interaction, Raman spectroscopy.

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