Synthesis and vibrational response of graphite oxide platelets from bamboo for electronic applications

Abstract

Graphite oxide is an interesting candidate for electronic applications; therefore, important efforts are dedicated to both large‐scaled and low‐cost graphite oxide production as an intermediate in graphene production. At the same time, research efforts are aimed at identifying the role of defects in the magneto‐electrical properties of platelets for electronic applications. In this paper, we present a new low‐cost fabrication process to obtain graphite oxide platelets of high crystal and thermoelectrical quality. The graphite oxide platelet samples were first obtained from bamboo pyroligneous acid (GO‐BPA) by thermal decomposition method using a pyrolysis system for different carbonization temperatures from 673 to 973 K. The GO‐BPA samples were characterized by using Raman, FTIR, XRD, and TEM techniques, whose results suggest that increased carbonization temperature increases graphite conversion, boundary defects, desorption of some organic compounds and phonon response, respectively. Finally, we discuss potential applications of the GO‐BPA samples involving phonon response that would benefit from a fully scaled technology, advanced electronic sensors, and devices.

Electrical conductivity of oxidized-graphenic nanoplatelets obtained from bamboo: effect of the oxygen content

“…Variation of synthesis conditions, specifically carbonization temperature, leads to modification of the oxygen-containing functional groups, as well as of the crystal structure in OGNP-BPA, as presented above and also confirmed by X-Ray diffraction (Figure S2 in Supplementary Information) and by other techniques [49]. For electrical characterization we focused on OGNP-BPA obtained at higher TCA (873 and 973 K), which ensures an improved crystal structure, as confirmed by HRTEM ( Figure S3 in Supplementary Information).…”

“…When the second carbonization process is completed, oxidized-graphenic material is obtained as macro foam, which then turns into nanoplatelets powders by mechanical grinding with a ceramic hand mortar. A detailed description of the method for obtaining oxidized-graphenic material can be found in a previous work [49].…”

“…In general, to avoid sophisticated GO reduction processes and eventual environmental contamination from the reducing agents, simple, green, and cost-effective methods are highly desirable. In a recent work, we reported on a new, simple, cost-effective method for the synthesis of oxidized-graphenic platelets by using bamboo pyroligneous acid (BPA) as source, showing similar vibrational properties as rGO obtained via conventional chemical methods [49]. The present work seeks to gain insight into the local atomic structure and electrical conductivity behavior of OGNP-BPA, given that research on these kinds of properties is of relevance for evaluating the impact on technological applications of this carbon material obtained through the new fabrication method using natural bamboo as source.…”

Activated Carbon Obtained from Bamboo: Synthesis, Morphological, Vibrational, and Electrical Properties and Possible Temperature Sensor

“…This result contributes to enhancing carbon‐based electronics, achieving innovation in the traditional applications of this material; currently, targeting 98% to adsorption processes, 1% to the implementation of supercapacitors, and 1% to other applications.…”

Fabrication and electrical response of flexible supercapacitor based on activated carbon from bamboo

“…Capacitance values of SC considerably exceed traditional capacitors by several orders of magnitude. These high values are attributed to development and innovation of nanostructures and porous materials, which have high surface areas, as is the case of AC [12], carbon nanoparticles [13,14], nanotubes [15,16], and MnO2 nanorods [17,18]. A double layered SC is based on charge separation in the electrode-electrolyte interface; electrodes are formed by porous carbon impregnated with electrolytes and separated by an insulating membrane [19].…”