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Preparation method of BiOBr/RGO nanometer composite and application thereof in reaction of degrading rhodamine

A technology of nanocomposite materials and composite materials, which is applied in the field of photocatalysts, can solve the problems of different preparation methods, and achieve the effects of low preparation temperature, good catalytic stability, and simple preparation methods

Active Publication Date: 2015-02-18
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although they all have prepared BiOBr / RGO nanocomposites, the present invention is quite different from the BiOBr / RGO nanocomposites prepared by them in appearance. In addition, the preparation methods are also different. Liu et al. adopt the hydrothermal method , W. Zhang et al. used the in-situ precipitation method, S. Song et al. used the microwave method, and the preparation of BiOBr / RGO nanocomposites by the emulsion method has not been reported.

Method used

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  • Preparation method of BiOBr/RGO nanometer composite and application thereof in reaction of degrading rhodamine
  • Preparation method of BiOBr/RGO nanometer composite and application thereof in reaction of degrading rhodamine
  • Preparation method of BiOBr/RGO nanometer composite and application thereof in reaction of degrading rhodamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The specific preparation steps of 1#BiOBr / GO nanocomposite are as follows:

[0035] (1) Preparation of GO

[0036] 0.5g graphite powder and 1.5g KMnO 4 Add it into a round-bottomed flask containing 12 mL of concentrated sulfuric acid, stir magnetically for 4 h under ice-water bath conditions, heat to 35 ° C, stir at constant temperature for 30 min, add 23 mL of distilled water dropwise, raise the temperature to 98 ° C, stir for 15 min, and transfer the mixture to ice In a water bath, add 70 mL of distilled water to dilute, then add 10 mL of 30% hydrogen peroxide, stir for 30 min, the solution turns yellow, centrifuge, wash thoroughly until the pH of the supernatant is 7, and dry the lower precipitate to obtain GO.

[0037] (2) Preparation of BiOBr / GO nanocomposites

[0038] Measure 20 mL of toluene into a round bottom flask, stir at 60 °C for 30 min, add 50 mg of CTAB and 0.4 mL of OA, continue stirring until the two are completely dissolved, then add 3 mg of GO prepa...

Embodiment 2

[0040] The specific preparation steps of 2#BiOBr / GO nanocomposite are as follows:

[0041] (1) Preparation of GO

[0042] Same as the preparation method of GO in Example 1.

[0043] (2) Preparation of BiOBr / GO nanocomposites

[0044] Measure 20 mL of toluene into a round bottom flask, stir at 60 °C for 30 min, add 73 mg of CTAB and 0.4 mL of OA, continue stirring until the two are completely dissolved, then add 3 mg of GO prepared above, stir for 2 h to completely disperse, and the suspension The solution is called A. In addition, measure 190mL H at room temperature 2 O, add 10 mL of 65% HNO 3 , weighed 1.96g Bi(NO 3 ) 3 ·5H 2 O, stirred with a glass rod to dissolve completely, called solution B. Measure 1.0 mL of solution B and drop it into the suspension A under stirring, continue to stir for 12 hours, raise the temperature to 85°C for reflux, and keep it at 85°C for 12 hours, and the reaction ends. The reactants were cooled to room temperature, centrifuged, washed,...

Embodiment 3

[0046] The specific preparation steps of 3#BiOBr / GO nanocomposite are as follows:

[0047] (1) Preparation of GO

[0048] Same as the preparation method of GO in Example 1.

[0049] (2) Preparation of BiOBr / GO nanocomposites

[0050] Measure 20 mL of toluene into a round-bottomed flask, stir at 60 °C for 30 min, add 90 mg of CTAB and 0.4 mL of OA, continue stirring until the two are completely dissolved, then add 3 mg of GO prepared above, and stir for 2 h to completely disperse it. The suspension is called A. In addition, measure 190mL H at room temperature 2 O, add 10 mL of 65% HNO 3 , weighed 1.96g Bi(NO 3 ) 3 ·5H 2 O, stirred with a glass rod to dissolve completely, called solution B. Measure 1.0 mL of solution B and drop it into the suspension A under stirring, continue to stir for 12 hours, raise the temperature to 85°C for reflux, and keep it at 85°C for 12 hours, and the reaction ends. The reactants were cooled to room temperature, centrifuged, washed, and dried...

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Abstract

The invention discloses a preparation method of a BiOBr / RGO nanometer composite and application thereof, belonging to the field of photocatalysts. The BiOBr / RGO nanometer composite has an active ingredient of BiOBr / RGO, and is characterized in that floriform BiOBr and laminar RGO are interweaved together to form a special three-dimensional structure. The preparation method comprises the following steps: weighing a certain amount of methylbenzene, hexadecyl trimethyl ammonium bromide and oleic acid, mixing at a constant temperature, adding oxidized graphene to obtain a solution A; weighing a certain amount of H2O, adding HNO3 and Bi(NO3)3.5H2O to obtain a solution B; dropping the solution B in the solution A under a mixing state, raising the temperature to 85 DEG C and reflowing for 12h; and then, cooling, washing and drying to obtain a target product. The BiOBr / RGO nanometer composite prepared by adopting the preparation method can be used as a photocatalyst for a reaction of degrading rhodamine, and has good catalysis effect and stability.

Description

technical field [0001] The invention belongs to the field of photocatalysts, in particular to a preparation technology of a photocatalyst BiOBr / RGO nanocomposite material containing reduced graphene (RGO), in particular to the preparation of a BiOBr / RGO nanocomposite material with controllable morphology and composition Preparation technology. The prepared BiOBr / RGO nanocomposite material in the invention is a photocatalyst, which has a good catalytic effect when used for photodegradation of rhodamine. Background technique [0002] Multi-component hybrid materials with controllable morphology and composition have great potential application value in the fields of catalysis, solar energy conversion and photoelectric technology (P.Li, et al.Au-ZnO Hybrid Nanopyramids and Their Photocatalytic Properties, J .Am.Chem.Soc.2011,133,5660-5663; T.Yu, et al.AqueousPhase Synthesis of Pt / CeO 2 Hybrid Nanostructures and Their Catalytic Properties, Adv. Mater. 2010, 22, 5188-5192.). R...

Claims

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Application Information

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IPC IPC(8): B01J27/06B01J35/02B82Y40/00C02F1/30C02F1/58
Inventor 陈国昌汪丹丹乔红斌裘小宁蒋伟峰吴胜华
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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