Abstract
In this study, we present a new approach for the formation and deposition of Cu nanocube-decorated reduced graphene oxide (rGO-CuNCs) nanosheet on indium tin oxide (ITO) electrode using very simple method. Cubic Cu nanocrystals have been successfully fabricated on rGO by a chemical reduction method at low temperature. The morphologies of the synthesized materials were characterized by ultraviolet-visible (UV-vis) spectroscopy, scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and atomic force microscopy (AFM). The as-formed CuNCs were found to be homogeneously and uniformly decorated on rGO nanosheets. We demonstrated that the individual rGO sheets can be readily reduced and decorated with CuNCs under a mild condition using L-ascorbic acid (L-AA). Such novel ITO/rGO-CuNCs represent promising platform for future device fabrication and electrocatalytic applications.
Highlights
In recent years, graphene oxide (GO) and reduced graphene oxide became a hot topic and opened an entirely new domain in the area of material science [1,2,3]
The combination of GO with inorganic nanoparticles has led to nanocomposites with multiple functionalities that are protected against degradation by coating with a suitable material [8, 9] and currently of interest for applications in biomedicine, energy production, electronics, and environmental remediation
GO shows another broad shoulder at 290 nm indicating π–π∗ transitions of C=O were observed during the entire course of GO preparation, which disappeared for reduced graphene oxide (rGO), suggesting that GO is reduced and the electronic conjugation within the graphene sheets is restored upon resveratrol reduction
Summary
Graphene oxide (GO) and reduced graphene oxide (rGO) became a hot topic and opened an entirely new domain in the area of material science [1,2,3]. The opportunity to combine GO with inorganic nanoparticles, thereby forming graphene-nanoparticle hybrid structures, is currently of interest for applications in bioelectronics, energy production, biomedicine, and environmental remediation [2,3,4,5,6,7]. The combination of GO with inorganic nanoparticles has led to nanocomposites with multiple functionalities that are protected against degradation by coating with a suitable material (shell) [8, 9] and currently of interest for applications in biomedicine, energy production, electronics, and environmental remediation. We present the fabrication of copper nanocubes(CuNCs-) decorated reduced graphene oxide (rGO) nanocomposite. The nanocomposite was prepared using simple chemical reduction method, consisting of simultaneous reduction of GO and formation of copper nanocubes with Lascorbic acid at room temperature
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