Preparation method of flower-like BiOBr and application of flower-like BiOBr in rhodamine degradation reaction

A flower-shaped, completely dissolved technology, applied in chemical instruments and methods, light water/sewage treatment, physical/chemical process catalysts, etc., to achieve high catalytic efficiency, simple preparation method, and good catalytic stability.

Active Publication Date: 2015-04-01
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of flower-like BiOBr with good dispersion and controllable morphology by emulsion method has not been reported.

Method used

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  • Preparation method of flower-like BiOBr and application of flower-like BiOBr in rhodamine degradation reaction
  • Preparation method of flower-like BiOBr and application of flower-like BiOBr in rhodamine degradation reaction
  • Preparation method of flower-like BiOBr and application of flower-like BiOBr in rhodamine degradation reaction

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Experimental program
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Effect test

Embodiment 1

[0025] The specific preparation steps of 1#BiOBr photocatalyst are as follows:

[0026] 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 oleic acid OA, and continue stirring until the two are completely dissolved. This 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 2O, stirred with a glass rod to dissolve completely, called solution B. Measure 1mL of solution B and drop it into the stirring solution A, continue stirring for 12h, raise the temperature to 85°C for reflux, and keep it at 85°C for 12h, the reaction ends. The reactant was cooled to room temperature, centrifuged, washed and dried to obtain flower-like BiOBr.

Embodiment 2

[0028] The specific preparation steps of 2#BiOBr photocatalyst are as follows:

[0029] Measure 20 mL of toluene into a round-bottomed flask, stir at 60°C for 30 minutes, add 50 mg of CTAB and 0.4 mL of oleic acid OA, and continue stirring until the two are completely dissolved. This 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 1mL of solution B and drop it into the stirring solution A, continue stirring for 12h, raise the temperature to 85°C for reflux, and keep it at 85°C for 12h, the reaction ends. The reactant was cooled to room temperature, centrifuged, washed and dried to obtain BiOBr.

Embodiment 3

[0031] The specific preparation steps of 3#BiOBr photocatalyst are as follows:

[0032] Measure 20mL of toluene into a round-bottomed flask, stir at 60°C for 30min, add 90mg of CTAB and 0.4mL of oleic acid OA, and continue stirring until the two are completely dissolved. This 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 1mL of solution B and drop it into the stirring solution A, continue stirring for 12h, raise the temperature to 85°C for reflux, and keep it at 85°C for 12h, the reaction ends. The reactant was cooled to room temperature, centrifuged, washed and dried to obtain BiOBr.

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Abstract

The invention discloses a preparation method and application of flower-like BiOBr, belonging to the field of photocatalysts. The BiOBr has flower-like structure, and has favorable dispersity; and the petal thickness is 20-40nm, and the corolla diameter is 1-1.5 mu m. The preparation method comprises the following steps: measuring toluene, putting the toluene into a round-bottom flask, stirring at constant temperature, adding cetyl trimethylammonium bromide and oleic acid, and stirring for dissolution to obtain a solution A; measuring a certain amount of water, and adding HNO3 and Bi(NO3)3.5H2O to obtain a solution B; and while stirring, dropwisely adding the solution B into the solution A, continuing stirring for 12 hours, heating to 85 DEG C, refluxing for 12 hours, cooling the reaction product, separating, washing, and drying to obtain the flower-like BiOBr. The flower-like BiOBr can be used as a photocatalyst for degrading the organic pollutant rhodamine in water, and has favorable catalytic effect and high stability.

Description

technical field [0001] The invention belongs to the field of photocatalysts, and in particular relates to a preparation technology of photocatalyst flower-like BiOBr, in particular to a preparation technology of flower-like BiOBr with good dispersibility and controllable shape and particle size. The flower-shaped BiOBr prepared by the invention is used as a catalyst for photodegradation of rhodamine and has achieved good catalytic effect. 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.). Semiconductor photocatalytic materials have outstanding advantages a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06C01B11/20C02F1/30
Inventor 陈国昌张洪宇乔红斌裘小宁蒋伟峰吴胜华
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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