Graphite Graphene Oxide Research Articles

Renewable Resources as Promising Materials for Obtaining Graphene Oxide-like Structures.

Currently, one of the topical directions in the field of production and application of graphene-like nanostructures is the use of renewable natural raw materials, which have unlimited resources for an economically efficient large-scale yield of a product with environmental safety. In this regard, we present the production of graphene oxide (GO) from a renewable natural raw material of plant biomass, birch activated carbon (BAC), and a comparison of the obtained physicochemical, mechanical, and electrical properties of birch activated carbon-graphene oxide (BAC-GO) and graphite-graphene oxide (G-GO) synthesized from the initial materials, BAC and graphite (G). Results obtained from this study confirm the successful oxidation of BAC, which correlates well with the physical-chemical dates of the G-GO and BAC-GO samples. Change in data after the oxidation of graphite and BAC was facilitated by the structure of the starting materials and, presumably, the location and content of functional oxygen-containing groups in the G-GO and BAC-GO chains. Based on the results, the application of a cost-effective, eco-friendly colloidal solution of nanodispersed BAC-GO from a plant biomass-based high-quality resource for producing large-scale nanostructured graphene is validated which has potential applicability in nanoelectronics, medicine, and other fields.

A novel porous reduced microcrystalline graphene oxide supported Fe3O4@C nanoparticle composite as anode material with excellent lithium storage performances

The competitiveness of reduced graphene oxide (GO) based composite can be significantly improved when the raw material of GO become the low-cost microcrystalline graphite mine. Herein, we first successfully fabricate high-quality microcrystalline graphite GO (MGO) with small size <1μm by a modified pressurized oxidation approach. Subsequently, Fe3O4@C/PrMGO composite is simply constructed by using porous reduced MGO (PrMGO) to support carbon coated Fe3O4 nanoparticles (Fe3O4@C NPs). The Fe3O4@C/PrMGO composite exhibits high reversible capacity and excellent cyclic stability that a high reversible capacity of 1216mAhg−1 is received after 392 cycles at 100mAg−1. Meanwhile, the composite possesses high rate retentions, superior structural and cycling stability, which are further revealed by rate test, SEM and EIS analyses. The significant advantages of Fe3O4@C/PrMGO composite (low cost, facile operation and high electrochemical performances) endow the composite to be practically promising anode material for next-generation LIBs. This research supplies a new strategy to fabricate low-cost and high performances MGO-based anode materials.