Preparation method of cubic cuprous oxide/graphene nanocomposite

A technology of nanocomposite materials and cuprous oxide, applied in chemical instruments and methods, chemical/physical processes, water treatment of special compounds, etc., can solve the problem of low photocatalytic performance improvement, poor morphology of composite products, and complicated preparation methods cumbersome and other problems, to achieve the effect of facilitating mass industrial production, excellent appearance, and good application prospects

Inactive Publication Date: 2016-06-15
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The existing research has great defects in the synthesis of this composite product. First, the preparation method is complicated and cumbersome. The high temperature hydrothermal reaction and long-term stirring all make the reaction conditions harsh and the cost is high. On the other h

Method used

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  • Preparation method of cubic cuprous oxide/graphene nanocomposite
  • Preparation method of cubic cuprous oxide/graphene nanocomposite
  • Preparation method of cubic cuprous oxide/graphene nanocomposite

Examples

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Embodiment 1

[0030] Step 1, 0.4g of copper sulfate pentahydrate and 50mg of graphene oxide are uniformly dispersed in 80mL of ultrapure water in a 600W ultrasonic machine for 8 minutes;

[0031] Step 2, the above solution was mechanically stirred in a water bath at 60°C for 30 minutes.

[0032] Step 3, 10mL of 1mol / L sodium hydroxide solution was added dropwise to the reaction solution, and one minute after the dropwise addition, quickly poured into 10mL of 0.3mol / L glucose solution, and continued to mechanically stir at 60°C for two and a half hours .

[0033] Step 4: Centrifuge the obtained suspension at 6000 rpm, alternately wash and centrifuge it with ultrapure water and ethanol for 4 times, and dry it in a vacuum oven at 40°C to obtain a cuprous oxide / graphene nanocomposite powder.

[0034] The cuprous oxide / graphene composite nanomaterial prepared in Example 1 was used for visible light catalysis research on methyl orange. 20 g of the nanocomposite powder prepared in Example 1 was ...

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Abstract

The invention discloses a preparation method of a cubic cuprous oxide/graphene nanocomposite with efficient photocatalysis capability. According to the method, the composite can be prepared with a simple one-pot reduction method. Firstly, graphene oxide is prepared with an improved Hummers method, copper sulfate pentahydrate and graphene oxide are ultrasonically dispersed in water and mechanically stirred in a water bath at the temperature of 50-60 DEG C to be uniformly mixed, a sodium hydroxide solution is dropwise added to the mixture, copper hydroxide precipitates are formed, then, a glucose solution is added, the mixture reacts for 2-3 h, sufficient reduction is performed, centrifugation, washing and drying are performed, and a cubic cuprous oxide/graphene photocatalyst with the efficient photocatalysis capability is obtained. The process is simple, the cost is low, the product has uniform morphology, and the cubic cuprous oxide/graphene nanocomposite has excellent capability of photocatalytic degradation of organic dye under the visible light and has great application potential in environmental governance and solar energy utilization.

Description

technical field [0001] The invention relates to a method for preparing a nanocomposite photocatalytic material, in particular to a method for preparing a cubic cuprous oxide / graphene nanocomposite material, and belongs to the field of preparation of nanometer visible photocatalytic materials. Background technique [0002] Cuprous oxide is a typical narrow-bandgap P-type semiconductor. Its bandgap is between 2.0 and 2.4eV, and it can be excited by most of the visible light. Therefore, it has a wide range of applications in the field of visible light photocatalysis. At the same time, compared with other narrow-bandgap semiconductors (such as metal sulfides), cuprous oxide is an ideal semiconductor for water splitting and degradation of dye pollutants under visible light due to its low toxicity, low cost, and ability to be widely prepared in large quantities. However, due to the rapid recombination of photogenerated electrons and holes, the photocatalytic ability of cuprous oxi...

Claims

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Application Information

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IPC IPC(8): B01J23/72C02F1/30C02F101/38
CPCB01J23/72B01J35/004C02F1/30C02F2101/40C02F2305/10
Inventor 杨志张薇汤雪辉胡南滔张亚非
Owner SHANGHAI JIAO TONG UNIV
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