Method for preparing graphene based nano composite material through in-situ reduction of graphite oxide

A nano-composite material, graphene-based technology, applied in the direction of graphene, nano-carbon, material electrochemical variables, etc., can solve the problems of cumbersome process, complicated steps, easy residual impurities, etc., to achieve universality and simple operation. Effect

Active Publication Date: 2014-06-25
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In the prior art, commonly used methods include ultrasonic method, hydrothermal method, electrochemical method, synchronous reduction method, etc., but chemical reagents such as ion source, reducing agent or surfactant are inevitably used in the experimental process, Moreover, most of the methods include post-annealing treatment to obtain the reduced graphene composite material, the steps are complicated, the process is cumbersome, impurities are easy to remain, and the obtained product is not pure enough.

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  • Method for preparing graphene based nano composite material through in-situ reduction of graphite oxide
  • Method for preparing graphene based nano composite material through in-situ reduction of graphite oxide
  • Method for preparing graphene based nano composite material through in-situ reduction of graphite oxide

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specific Embodiment

[0032] with SnO 2 -rGO and ZnO-rGO are taken as examples to describe the method process in detail.

[0033] The specific experimental procedure is as figure 1 Shown:

[0034] The metastable nanomaterial colloid with high activity and high reactivity is obtained after pulsed laser ablation by rotating metal target, which is mixed with graphite oxide prepared by the classic Hummers method and then placed in a dark place.

[0035] Such as figure 2 As shown, after one week, the product changed from yellow flocs to black flocs when initially mixed. Firstly, the reduction of graphite oxide and the generation of graphene are proved by the color.

[0036] Such as Figure 3a , 3b 、 As shown in 3c, in order to characterize the morphology of the product, TEM of the product was done, ( Figure 3a ) is graphene oxide prepared by the classic Hummers method. It can be seen from the figure that the obtained graphite oxide is uniform and free of impurities. The SEAD diagram in the uppe...

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Abstract

The invention discloses a method for preparing a graphene based nano composite material through in-situ reduction of graphite oxide. The method comprises the following steps: firstly, performing pulse laser ablation on a rotating metal target material to obtain metastable colloid with high activity and high reactivity, subsequently mixing and oscillating the metastable colloid having high activity with graphite oxide prepared by using a classic Hummers method, and standing at a dark place for more than one weak. The prepared nano composite material, such as SnO2-rGO and ZnO-rGO, is simple to operate, environmental friendly, efficient and high in universality.

Description

technical field [0001] The invention relates to a method for preparing a graphene-based nanocomposite material, in particular to a method for synchronously reducing graphite oxide in situ to prepare a graphene-based nanocomposite material. Background technique [0002] Graphene is a honeycomb two-dimensional planar crystal film composed of sp2 hybridized C atoms. In 2004, a single layer of graphene was prepared and proved to be stable, with a single layer thickness of only 0.335nm. In addition to its excellent mechanical and thermal properties, graphene also has specific electrical properties, such as high electrical conductivity (electron mobility at room temperature reaches 15000 cm 2 / V s), perfect quantum tunneling effect, large specific surface area (2600m 2 / g) and half-integer quantum Hall behavior. This makes graphene widely used in nanoelectronic devices, sensors, drug carriers, supercapacitors and energy storage. The preparation of graphene by oxidation-reductio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04G01N27/26C01B32/184
Inventor 叶一星王盼盼刘俊梁长浩
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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