Method for rapidly preparing monolayer graphene oxide through one-pot method

Abstract

The invention discloses a method for rapidly preparing monolayer graphene oxide through a one-pot method. The method comprises the following steps: stirring, mixing and infiltrating graphite and concentrated acid or the mixed acid of the graphite and concentrated acid for 5 min to 1h at 20-50 DEG C, adding a strong oxidant and an intercalator for intercalating, slowly heating a mixed solution to 30-100 DEG C, and consistently stirring for 1-10 h; cooling a reaction solution to 20-37 DEG C, supplementing a certain amount of the concentrated acid or the mixed acid of the graphite and concentrated acid, slowly adding the strong oxidant, reacting for 0.5-3 h at 20-37 DEG C, heating to the temperature which is 10 DEG C lower than a safe temperature, further reacting for 2-8 h for oxidizing and stripping a graphite sheet layer, after completion of reaction, slowly pouring an obtained product into icy deionized water for diluting, adding hydrogen peroxide after the icy deionized water is stable, performing standing, cleaning precipitate with 1mol / L of dilute hydrochloric acid and deionized water repeatedly, and centrifuging to obtain the monolayer graphene oxide. The method is simple and controllable in preparation process and short in time consumption and low in energy consumption; by the one-pot method, the grapheme can be rapidly and directly converted to the monolayer graphene oxide.

Description

technical field

[0001] The invention relates to the field of nanomaterials, in particular to a method for rapidly preparing single-layer graphene oxide in one pot. Background technique

[0002] In 2004, the research group of Professor A.K. Geim of the University of Manchester successfully prepared graphene by mechanical exfoliation, overturning the theory that the perfect two-dimensional crystal structure cannot exist stably at non-absolute zero temperature. Then graphene's excellent mechanical properties, electrical properties, thermal properties, and optical properties were discovered one after another. Graphene has a large theoretical specific surface area, coupled with the excellent performance of the monolithic structure, carbon-based materials with graphene as the source material have been greatly developed and applied.

[0003] The preparation of graphene by oxidation-reduction method is considered to be the most important method to realize the industrial produc...

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