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Preparation for silver phosphate nano ball-graphene composite material and photocatalysis application

A composite material and graphene technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of improving stability, avoiding agglomeration, and simple preparation methods

Inactive Publication Date: 2013-02-13
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these catalysts also have visible light activity, the catalytic efficiency needs to be greatly improved.

Method used

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  • Preparation for silver phosphate nano ball-graphene composite material and photocatalysis application
  • Preparation for silver phosphate nano ball-graphene composite material and photocatalysis application
  • Preparation for silver phosphate nano ball-graphene composite material and photocatalysis application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 0.04g of bovine serum albumin in 100mL of distilled water at room temperature, gradually drop into 10mL of 0.1M silver nitrate solution, after a white colloidal solution is formed, then drop into 100mL of graphene oxide solution (0.5mg / mL); magnetically stir for 2 hours Finally, 3.3 mL of 0.1 M disodium hydrogen phosphate solution was added dropwise, and after magnetic stirring for 4 hours, centrifuged, washed with distilled water, and dried to obtain a silver phosphate nanosphere-graphene composite material.

[0031] The scanning microscope picture of the product silver phosphate nanosphere-graphene composite is shown in figure 2 , X-ray diffraction pattern see image 3 In b, the UV-Vis absorption spectrum of the silver phosphate nanosphere-graphene composite is shown in Figure 4 .

[0032] Will 0.025 Disperse one gram of silver phosphate nanosphere-graphene composite into 50 mL of rhodamine B solution with a concentration of 52 ppm, stir magnetically for...

Embodiment 2

[0035] Dissolve 0.04g of bovine serum albumin in 100mL of distilled water at room temperature, gradually drop into 10mL of 0.1M silver nitrate solution, after a white colloidal solution is formed, then drop into 150mL of graphene oxide solution (0.5mg / mL); magnetically stir for 2 hours Finally, 3.3 mL of 0.1 M disodium hydrogen phosphate solution was added dropwise, and after magnetic stirring for 4 hours, centrifuged, washed with distilled water, and dried to obtain a silver phosphate nanosphere-graphene composite material.

[0036] Scanning microscope pictures of the products are shown in figure 2 , X-ray diffraction pattern see image 3 Middle b, UV-Vis absorption spectrum see Figure 4 . Degradation Rhodamine B solution experiment is the same as embodiment 1, the results are shown in Figure 5 , Figure 6 .

Embodiment 3

[0038] Dissolve 0.04g of bovine serum albumin in 100mL of distilled water at room temperature, gradually drop into 10mL of 0.1M silver nitrate solution, after a white colloidal solution is formed, then drop into 200mL of graphene oxide solution (0.5mg / mL); magnetically stir for 2 hours Finally, 3.3 mL of 0.1 M disodium hydrogen phosphate solution was added dropwise, and after magnetic stirring for 4 hours, centrifuged, washed with distilled water, and dried to obtain a silver phosphate nanosphere-graphene composite material.

[0039] Scanning microscope pictures of the products are shown in figure 2 , X-ray diffraction pattern see image 3 Middle b, UV-Vis absorption spectrum see Figure 4 . Degradation Rhodamine B solution experiment is the same as embodiment 1, the results are shown in Figure 5 , Figure 6 .

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Abstract

The invention discloses a preparation for a silver phosphate nano ball-graphene composite material and photocatalysis application. The silver phosphate nano ball-graphene composite material is formed by in-situ growth silver phosphate nano balls decorated on the surface of graphene. In the composite material, the ratio of silver phosphate nano balls and the graphene is 100-25 milligram graphene oxide and the surface growth silver phosphate nano balls are 0.33 millimoles. The preparation method comprises steps of dissolving bovine serum albumin to distilled water, gradually dropping a silver nitrate solution, dropping a graphene oxide solution after a white colloid solution is formed, stirring for 2 hours, dropping a disodium hydrogen phosphate solution, stirring for four hours, conducting centrifugation, washing by using the distilled water, drying and obtaining the silver phosphate nano ball-graphene composite material. The composite material can serve as a visible-light-induced photocatalyst, and a photocatalysis experiment proves that the composite material has good visible-light catalytic activity. The preparation is simple and large-scale production can be achieved.

Description

technical field [0001] The invention relates to a catalyst for visible light catalytic degradation of organic pollutants and a preparation method thereof, in particular to the preparation and photocatalytic application of silver phosphate nanosphere-graphene composite materials. technical background [0002] At present, environmental protection and energy crisis have become the primary problems that human beings must face and solve. Semiconductor visible light catalytic degradation technology is gradually becoming an effective means of water pollution control due to its advantages of making full use of solar energy, no need for expensive instruments, simple preparation, low cost of wood, and no secondary pollution. This technology can make full use of photochemical reactions to accelerate the degradation of organic matter to protect the environment, and at the same time help alleviate the growing energy crisis. [0003] In 1976, Carey et al. [1] introduced photocatalytic ma...

Claims

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Application Information

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IPC IPC(8): B01J27/18C02F1/30
CPCY02W10/37
Inventor 马培艳陈安良傅正义吴燕
Owner WUHAN UNIV OF TECH
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