Synthesis method for RGO@Pt (reduced graphene oxide@platinum) composite nanomaterial

A technology of composite nanomaterials and synthesis methods, which is applied in the field of synthesis of RGO@Pt composite nanomaterials, can solve the problems of uneven dispersion, difficulty in controlling the size of composite nanomaterials, and difficulty in RGO and Pt, and achieves a controllable and broad morphology. Application value and prospect, the effect of simple and easy synthesis method

Active Publication Date: 2019-04-05
JIANGSU INST OF ECONOMIC & TRADE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention overcomes the defects in the prior art that the size of the composite nanomaterial is difficult to control, the dispersion is uneven, and RGO and Pt are difficult to form a good composite nanomaterial

Method used

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  • Synthesis method for RGO@Pt (reduced graphene oxide@platinum) composite nanomaterial

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 1.08g of sodium acetate and add 10mL of water to dissolve it, adjust the pH value to 5 with glacial acetic acid, and add water to dilute to 20mL. Prepare 4 mL of a 0.5 mg / mL chitosan solution with the above-mentioned buffer solution as a solvent. Prepare the RGO solution with chitosan solution as the solvent, sonicate for 1 hour at room temperature, then add the prepared Pt suspension in the aqueous phase according to the molar ratio RGO:Pt=1:10, sonicate for 30 minutes, and centrifuge the obtained product to obtain corresponding products. The product of the present invention is characterized by electron transmission electron microscope (TEM) see figure 1 .

Embodiment 2

[0019] Weigh 1.08g of sodium acetate and add 10mL of water to dissolve, adjust the pH value to 5 with glacial acetic acid, add water to dilute to 20mL, and prepare 4mL of 0.5mg / mL chitosan solution with the above buffer solution as solvent. The RGO solution was prepared with chitosan solution as solvent, and ultrasonicated at room temperature for 1 h. Then, according to the molar ratio RGO:Pt=10:1, add the Pt suspension that has been dispersed in the aqueous phase, ultrasonically for 30 minutes, and centrifuge and wash the obtained product to obtain the corresponding product.

Embodiment 3

[0021] Weigh 1.08g of sodium acetate and add 10mL of water to dissolve, adjust the pH value to 5 with glacial acetic acid, add water to dilute to 20mL, prepare 4mL of 0.5mg / mL chitosan solution with the above buffer solution as solvent, and prepare RGO with chitosan solution as solvent Solution, ultrasonic at room temperature for 1h. Then according to the molar ratio RGO:Pt=5:1, add the Pt suspension that has been dispersed in the water phase, ultrasonic for 30min, and centrifuge the obtained product to obtain the corresponding product.

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Abstract

The invention discloses a synthesis method for an RGO@Pt (reduced graphene oxide@platinum) composite nanomaterial. The method is characterized in that under the condition of an acetic acid-sodium acetate buffer solution, chitosan serves as a reactant to enable RGO (reduced graphene oxide) and Pt to be combined so as to prepare the multifunctional RGO@Pt composite nanomaterial. The method overcomesthe defects that in the prior art, the size of the composite nanomaterial is difficult to control, dispersion is not uniform, and the RGO and the Pt can hardly form a very good composite nanomaterial. The RGO@Pt composite nanomaterial has the advantages that the particle size is uniform and adjustable, the morphology is controllable, the fluorescent effect is good; meanwhile, phototherapy can becarried out, and the RGO@Pt composite nanomaterial can be used as a potential drug preparation for early-stage treatment of tumors to be applied to clinical practice. The synthesis method has the advantages of being simple and feasible, and the prepared RGO@Pt composite nanomaterial has wide application value and prospect.

Description

technical field [0001] The invention relates to a synthesis method of RGO@Pt composite nanometer material. Background technique [0002] As we all know, although graphene is composed of single atomic layers, it has a perfect lattice structure and its structure is extremely stable. Two-dimensional graphene can be assembled into all other graphitic carbon materials, rolled into zero-dimensional fullerenes, encapsulated into one-dimensional carbon nanotubes, or stacked into three-dimensional graphite. The connection between each carbon atom in graphene is very flexible, which makes graphene harder than diamond, with a strength of 130 GPa, which is the thinnest but also the hardest nanomaterial discovered so far. The stable lattice structure makes graphene have excellent electrical conductivity. The valence band (π electrons) and conduction band (π electrons) of graphene * Electrons) intersect at the Fermi level, and the carriers near the Fermi level show a linear dispersion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K41/00A61K47/04A61P35/00A61K49/00
CPCA61K41/0057A61K47/02A61K49/0019A61K49/005A61P35/00
Inventor 吴晓红沈晔茜杨爱萍
Owner JIANGSU INST OF ECONOMIC & TRADE TECH
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