Dynamics of reduced graphene oxide: synthesis and structural models

Abstract

Historical structural modelling and recent merits/demerits of physicochemical properties from synthesis methodologies as well as the prospects of using reduced graphene oxide in modern devices from the perspective of graphene oxide.

Photochemical Carbocatalysis: Fullerene‐, Carbon Nanotube‐ or Graphene‐Based Metal‐Free Photocatalysts for Organic Transformations

“…The reduction of GO results in the preparation of reduced GO (RGO) (Figure 6), which restores partially the electronic properties of graphene, keeping the provided by the oxidation enhanced dispersibility in polar solvents, in parallel. [106] There are few reports, where graphene/graphite or simply modified graphene derivatives (e. g., GO) have been used as metal-free photocatalysts for organic transformations. [97,103] In a pioneer work, graphite flakes were employed as photocatalyst for the hydroacylation of dialkyl azodicarboxylates upon visible light illumination (Scheme 16a).…”

“…Since graphite and graphene present very low dispersibility, only in few and hazardous solvents, the highly dispersible, even in aqueous media, GO and RGO have been widely used in wet chemistry. [105,106] Additionally, unlike in zero bandgap and semimetal nature of graphene, GO can be semiconducting or insulating, exhibiting an easily tunable bandgap by chemical modification. [107] Based on that, the successful photocatalytic trifluoromethylation of arenes by GO was achieved under visible light irradiation, using the low-cost and commercially available Langlois' reagent (CF 3 SO 2 Na) as a source for the generation of the electrophilic radical •CF 3 (Figure 7a).…”

Photocatalytic degradation of organic dyes using reduced graphene oxide (rGO)

“…The chemical technique seems advantageous due to its low cost, ease of use, and large output. In particular, there are three key processes in this method's preparation of rGO 10 . The first stage entails the oxidation of graphite to produce graphite oxide, which introduces surface oxygen functions to the graphene layers 11 .…”

Performance enhancement of silicon photodiodes through the integration of green synthesized reduced graphene oxide variants

“…Moreover, recent developments in the synthesis of green, reduced graphene oxide variants, such as ascorbic acid-reduced graphene oxide (ArGO) and thermally reduced graphene oxide (TrGO), highlight a commitment to sustainable material science while maintaining high performance. These green synthesis methods not only mitigate environmental impact but also preserve functional groups crucial for device development [11][12][13][14][15][16][17]. The integration of these different variants pertaining to reduced graphene oxide (rGO) with silicon leads to the formation of rGO/Si photodiodes.…”