Cobalt oxide nanoparticle-decorated reduced graphene oxide (Co₃O₄–rGO): active and sustainable nanoelectrodes for water oxidation reaction

Abstract

Herein, cobalt oxide (Co3O4) decorated reduced graphene oxide (rGO) based nanoelectrodes fabricated by chemical reduction method using hydrazine hydrate, also it shows enhanced electrocatalytic activity for oxygen evolution (water oxidation)...

Enhanced Electrochemical NO2−Oxidation Reactions on Biomolecule Functionalised Graphene Oxide

“…Figure 2(c) represents the signals at 399.1 eV and 400.7 eV corresponding to NH−C=O and C−N groups respectively. Moreover, Figure 2(d) shows a couple of significant deconvoluted peaks of O1s at 532.7 eV and 534.7 eV representing the −C=O and −C−OH confirms the presence of oxygen in the different forms present on GT [32–34] …”

“…Moreover, Figure 2(d) shows a couple of significant deconvoluted peaks of O1s at 532.7 eV and 534.7 eV representing the À C=O and À CÀ OH confirms the presence of oxygen in the different forms present on GT. [32][33][34] Superimposed FTIR spectra of GO and GT are shown in Figure 3(a) represents a peak at 3440 cm À 1 corresponding to OÀ H stretching frequency for water molecules (adsorbed) and associated with carboxylic acid and hydroxyl functional groups. Then, the presence of other functional groups on the surface of GO are also confirmed, for example, C=O, C=C, CÀ O, and CÀ H bond stretching bands at 1715 cm À 1 , 1640 cm À 1 , 1105-1400 cm À 1 and 2920 cm À 1 respectively corresponding to carbon skeleton and oxidative functionalities available on the surface of GO.…”

Graphene-based materials as electrocatalysts for the oxygen evolution reaction: a review

“…Munde et al prepared cobalt oxide nanoparticle-decorated reduced graphene oxide (Co 3 O 4 -rGO) through a chemical reduction strategy. 50 The HR-TEM image showed that Co 3 O 4 nanoparticles were distributed on rGO. According to the EDAX study, the elemental composition of the composite was 14%, 84%, and 2% for O, C, and Co, respectively.…”

Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction

“…These structural properties of GO enhance the electrical conductivity and the dispersive forces when incorporating it into other materials to form composites 23 , 24 . For example, a composite of cobalt oxide (Co 3 O 4 )-decorated reduced graphene oxide (rGO)-based nanoelectrodes showed to have good electrochemical performance for water splitting reactions in an alkaline medium 3 . Sapner et al .…”