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Preparation method and application of carbon quantum dot-cuprous oxide composite

A technology of carbon quantum dots and composite materials, which is applied in chemical instruments and methods, water treatment of special compounds, metal/metal oxide/metal hydroxide catalysts, etc., to achieve good application prospects, high photocatalytic efficiency, and convenience for large quantities The effect of industrial production

Active Publication Date: 2016-11-16
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the existing carbon quantum dot / semiconductor composite materials are ultraviolet photocatalysts, so it is urgent to provide a simple and low-cost method for preparing visible light and even near-infrared photocatalysts.

Method used

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  • Preparation method and application of carbon quantum dot-cuprous oxide composite
  • Preparation method and application of carbon quantum dot-cuprous oxide composite
  • Preparation method and application of carbon quantum dot-cuprous oxide composite

Examples

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Embodiment 1

[0024] Step 1: Dissolve 3g of citric acid and 3g of urea in 10mL of ultrapure water under ultrasound, heat in an 800W household microwave oven for 5min, and cool down naturally; After centrifuging for 30 minutes per minute, the supernatant was packed into a dialysis bag of 500 Da and dialyzed for 2-3 days to obtain a carbon quantum dot solution;

[0025] Step 2, dissolve 0.3g of anhydrous copper sulfate in 50mL of ultrapure water under mechanical stirring, add 10mL of the above-mentioned carbon quantum dot solution, and stir evenly;

[0026] Step 3, the temperature of the above solution in a water bath is raised to 60° C., and 10 mL of 1 mol / L sodium hydroxide solution is added dropwise;

[0027] Step 4, after the above-mentioned dropwise addition is completed, immediately inject 10 mL of 0.3 mol / L glucose solution into the obtained suspension, and continue mechanical stirring for 3 hours; cool the above product to room temperature, centrifuge at 3000 rpm for 10 minutes, and c...

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Abstract

The invention provides a preparation method of a carbon quantum dot-cuprous oxide composite and an application of the carbon quantum dot-cuprous oxide composite as a photocatalyst. According to the preparation method disclosed by the invention, any surfactants are not added, glucose is used as a reducing agent, and the preparation method is a one-step in-site preparation method which is simple and easy to control. The technology is simple, the cost is low, the practicality is high, and batched industrial production is facilitated. The obtained composite is controllable in pattern, and high in photocatalysis efficiency, and has a good application prospect in the respects of utilization of solar energy, governance of environmental pollution and the like.

Description

technical field [0001] The invention belongs to the field of visible light catalytic materials, and in particular relates to a preparation method of a carbon quantum dot-cuprous oxide composite material and its application as a photocatalyst. Background technique [0002] Semiconductor-based photocatalysts have attracted the attention of more and more scholars because of their advantages in effectively utilizing solar energy and purifying the environment. Cuprous oxide is a typical narrow bandgap semiconductor (the bandgap value is about 2.17eV), which can be excited by most of the visible light, and has the advantages of low preparation cost, green and non-toxic preparation method, and abundant copper reserves on the earth. It can be prepared in large quantities, so it has a wide application potential in the field of visible light photocatalysis. However, due to the rapid recombination of photogenerated electrons and holes on cuprous oxide under light, the photocatalytic a...

Claims

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Application Information

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IPC IPC(8): B01J23/72C02F1/30C02F101/30
CPCC02F1/30B01J23/72C02F2101/30C02F2101/308C02F2305/10B01J35/39
Inventor 杨志马玉洁张薇李晓琳魏浩张亚非
Owner SHANGHAI JIAO TONG UNIV
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