Electromagnetic Properties of Reduced Graphene Oxide Buckypapers Obtained by Different Reduction Procedures

Abstract

Transmission properties of graphene oxide (GO) buckypapers reduced by different methods were investigated in the sub-THz range from 250 to 650 GHz. The reduction of GO films was performed by annealing and by interaction with hydrazine vapor. It was found that the chemical treatment is more effective for oxygen group removal than the thermal treatment. Based on the data of X-ray photoelectron and Raman spectroscopy measurements, the changes of the absorption properties of the investigated samples were attributed to the formation of additional defects and vacancies during reduction processes. Additionally, the influence of the duration of chemical reduction on the absorption properties of buckypaper in the sub-THz range was investigated.

Nanocarbon Photonics and Optoelectronics

“…The productive discussions during the meeting (which has been held on 19–24 March 2017) were provided by perfect organization and nice natural environment, including ski slopes, at Krasnaya Polyana resort (Sochi, Russia). The contributions (in total an amount of 30) of this Special Issue are covering research work related to production, characterization and application of the nanocarbon materials which include diamonds, carbon nanotubes, graphene other types of nanocarbon materials, and their composites . Traditionally for the NPO Workshop series there is also some portion of reports devoted to non‐carbon materials demonstrating properties and phenomena analogous to those observed for nanocarbons.…”

“…Most of the structural and other properties of carbon nanomaterials may be efficiently evaluated using traditional analytical techniques, such as XPS, Raman, electron microscopy, optical spectroscopy, etc. The papers presented in this Special Issue demonstrate also characterization of electrochemical, electromagnetic, and thermal properties of graphenic carbon structures. In the work of Kleshch et al it is shown that investigation of electron field emission may be used to reveal particular features of metallic and semiconducting carbon nanotubes .…”