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Silver carbonate-graphene oxide composite nano-material, as well as preparation method and application thereof

A graphene composite and nano-material technology, applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve the problem of poor cycle performance of silver carbonate photocatalyst, photocatalytic activity to be improved, and low adsorption performance, etc. problems, achieve good chemical stability, improve photocatalytic activity, and large specific surface area

Inactive Publication Date: 2013-12-18
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the silver carbonate photocatalyst prepared by the above method has poor cycle performance and low adsorption performance, and its photocatalytic activity needs to be improved.

Method used

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  • Silver carbonate-graphene oxide composite nano-material, as well as preparation method and application thereof
  • Silver carbonate-graphene oxide composite nano-material, as well as preparation method and application thereof
  • Silver carbonate-graphene oxide composite nano-material, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a kind of Ag 2 CO 3 -Graphene oxide composite nanomaterial, Ag 2 CO 3 The particles are rod-shaped, the graphene oxide is in the form of flakes, and the mass percentage of graphene oxide is 0.45%.

[0032] a kind of Ag 2 CO 3-The preparation method of graphene oxide composite nanomaterial, the steps include:

[0033] A, graphene oxide is ultrasonically dispersed in deionized water for 1h to prepare a graphene oxide dispersion;

[0034] B. Add AgNO to the graphene oxide dispersion under stirring 3 aqueous solution, continue to stir for 0.5h;

[0035] C. Add ammonia solution to the mixed solution prepared in step B under stirring, and continue to stir for 0.3h;

[0036] D. Add NaHCO to the preparation mixture in step C under stirring 3 Solution, continue to stir for 0.25h;

[0037] E. Centrifuge the product obtained in step D, wash the product with deionized water and absolute ethanol, and dry it in vacuum at 60°C for 4 hours to obtain Ag 2 CO 3 - Graphene oxi...

Embodiment 2

[0042] a kind of Ag 2 CO 3 -Graphene oxide composite nanomaterial, Ag 2 CO 3 It is a rod-shaped particle, the graphene oxide is in a flake shape, and the mass percentage of graphene oxide is 0.9%.

[0043] a kind of Ag 2 CO 3 -The preparation method of graphene oxide composite nanomaterial, the steps include:

[0044] A, graphene oxide is ultrasonically dispersed in deionized water for 1h to prepare a graphene oxide dispersion;

[0045] B. Add AgNO to the graphene oxide dispersion under stirring 3 aqueous solution, continue to stir for 1h;

[0046] C, under stirring, add ammonia solution to the mixed solution prepared in step B, and continue to stir for 0.5h;

[0047] D. Add NaHCO to the preparation mixture in step C under stirring 3 Solution, continue to stir for 0.5h;

[0048] E. Centrifuge the product obtained in step D, wash the product with deionized water and absolute ethanol, and dry it in vacuum at 20°C for 24 hours to obtain Ag 2 CO 3 - Graphene oxide comp...

Embodiment 3

[0052] a kind of Ag 2 CO 3 -Graphene oxide composite nanomaterial, Ag 2 CO 3 The particles are rod-shaped, the graphene oxide is in the form of flakes, and the mass percentage of graphene oxide is 1.25%.

[0053] a kind of Ag 2 CO 3 -The preparation method of graphene oxide composite nanomaterial, the steps include:

[0054] A, graphene oxide is ultrasonically dispersed in deionized water for 1h to prepare a graphene oxide dispersion;

[0055] B. Add AgNO to the graphene oxide dispersion under stirring 3 aqueous solution, continue to stir for 1h;

[0056] C, under stirring, add ammonia solution to the mixed solution prepared in step B, and continue to stir for 0.75h;

[0057] D. Add NaHCO to the preparation mixture in step C under stirring 3 Solution, continue to stir for 0.75h;

[0058] E. Centrifuge the product obtained in step D, wash the product with deionized water and absolute ethanol, and dry it in vacuum at 30°C for 20 hours to obtain Ag 2 CO 3 - Graphene o...

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Abstract

The invention relates to an Ag2CO3-graphene oxide composite nano-material, a preparation method and an application thereof. In the Ag2CO3-graphene oxide composite nano-material, Ag2CO3 is a rod-like particle, graphene oxide is in the shape of a thin sheet and the mass percentage of the graphene oxide is 0.45% to 3.5%. The preparation method comprises the following steps of: ultrasonically dispersing the graphene oxide, adsorbing AgNO3 by the graphene oxide, adding in an aqueous solution of ammonia for reaction, adding in a NaHCO3 solution for reaction, separating the product by centrifugation, and washing and drying the separated product. The composite nano-material takes the graphene oxide as a supporting material, the rod-like Ag2CO3 is loaded on the surface of the graphene oxide, and therefore, on the one hand, the dispersion degree of the catalyst can be increased, and on the other hand, the migration rate of a photogenerated charge can be quickened to improve the photocatalysis activity of the composite material. The preparation method has environmentally friendly effect and is sample in process.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, in particular to an Ag 2 CO 3 - Graphene oxide composite nanomaterial and its preparation method and application. Background technique [0002] Water is a necessity for all organisms on the earth to carry out life activities. However, the problem of water pollution has become more and more serious with the industrialization of society. Due to the development of the textile industry, a large amount of organic dye pollutants have been released into water (Industry & Engineering Chemistry Research 2012, 51, 5167-5173). Photocatalytic degradation of organic dyes can purify polluted water sources, so more and more researchers are committed to finding and preparing efficient photocatalysts. [0003] Titanium dioxide has attracted attention due to its low price, high chemical stability and effective catalytic activity (Applied Surface Science 2012, 258, 4801-4805). However, it only re...

Claims

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Application Information

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IPC IPC(8): B01J27/232B01J37/03
Inventor 魏先文董超吴孔林
Owner ANHUI NORMAL UNIV
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