Method for preparing graphene/silver/methionine copper nano-aggregates

A technology of copper methionine and methionine, which is applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve many problems such as the preparation of nano-aggregates

Inactive Publication Date: 2014-07-30
SHANGHAI UNIV
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Problems solved by technology

However, during the synthesis, dispersion and processing of nanoparticles, most nanoparticles are i...

Method used

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  • Method for preparing graphene/silver/methionine copper nano-aggregates
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  • Method for preparing graphene/silver/methionine copper nano-aggregates

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Embodiment

[0031] The process and steps of preparing graphene / silver / copper methionine nano aggregates are as follows:

[0032] A . Graphene / silver powder formulation

[0033] a. Weigh 100 mg of graphite oxide, put it into a 250 ml beaker, add 100 ml of distilled water to prepare graphite oxide suspension;

[0034] b. Discontinuous ultrasonic treatment of the suspension by a low-power ultrasonic cleaner at room temperature to obtain a graphene oxide dispersion;

[0035] c. After standing still, centrifuge the dispersion liquid at a speed of 8000 r / min for 30 min; transfer the upper brown translucent liquid into a clean glass bottle for later use;

[0036] d. Weigh 300 mg of silver nitrate, dissolve in 20 ml of distilled water, add the solution dropwise to the above-mentioned graphene oxide dispersion, and stir;

[0037] e. Pipette 0.02 ml of hydrazine hydrate solution (50%) in 10 ml of distilled water, then slowly add it dropwise to the above-mentioned graphene oxide silver nitr...

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Abstract

The invention relates to a method for preparing graphene/silver/methionine copper nano-aggregates by utilizing a liquid phase chemical reduction process and combining with coprecipitation through adjusting the pH value of a solution, and belongs to the technical field of nano-material preparation processes. The method is characterized by adjusting the pH valve of a mixed solution of graphene/silver, methionine and copper nitrate to facilitate heterogeneous nucleation of methionine and copper ions on a graphene/silver surface so as to fast prepare the nano-aggregates. The process disclosed by the invention is simple and easy, and is high in repeatability. The prepared nano-aggregates have potential applications in fields of biocompatibility electrodes, biosensors, molecular magnets and the like.

Description

technical field [0001] The invention relates to the preparation of graphene / silver / copper methionine nano-aggregates by using a liquid-phase chemical reduction process combined with a method of coprecipitation by adjusting the pH value of the solution, and belongs to the technical field of nano-material preparation technology. Background technique [0002] Graphene is a hexagonal honeycomb two-dimensional lattice composed of carbon atoms, which has physical and chemical properties such as huge specific surface area, high electron mobility, small mass density, high thermal stability, and chemical inertness. These properties of graphene make it an ideal basic component for building composite functional materials. Graphene composite materials have broad application prospects in the fields of micro-nano electronic devices, sensors, catalysis, energy storage, and biomedicine. [0003] In recent years, the design and research of molecular magnets has become a new research hotspot ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y30/00B82Y40/00
Inventor 姜惠轶张兆春于振伟
Owner SHANGHAI UNIV
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