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Preparing method and application of Ag/AgBr/BiOCl-(001) nanometer composite material

A nanocomposite material and reaction temperature technology, applied in chemical/physical processes, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of weakening the magnetic field potential difference of nanocrystals, unfavorable electron-hole separation, etc., to achieve The preparation method is simple, the catalytic efficiency is high, and the catalytic stability is good

Active Publication Date: 2016-06-29
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the aggregation of electrons will weaken the magnetic field inside the nanocrystal and the potential difference between different crystal planes, which is not conducive to the separation of electrons and holes. Therefore, there is a limit to improving the photocatalytic activity of BiOCl only by relying on crystal surface engineering technology. of

Method used

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  • Preparing method and application of Ag/AgBr/BiOCl-(001) nanometer composite material
  • Preparing method and application of Ag/AgBr/BiOCl-(001) nanometer composite material
  • Preparing method and application of Ag/AgBr/BiOCl-(001) nanometer composite material

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Experimental program
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Effect test

Embodiment 1

[0038] The specific preparation steps of 1#Ag / AgBr / BiOCl‐(001) nanocomposite are as follows:

[0039] (1) Preparation of BiOCl‐(001)

[0040] Weigh 146mgNaCl, 100mgNaOA, add 30mL deionized water, stir at 75°C for 30min to fully dissolve NaOA and NaCl, slowly add 2mL of 0.5mol / LBi(NO 3 ) 3 , and reacted at 95°C for 3 hours, cooled the reactant to room temperature, centrifuged, washed, and dried to obtain a solid product, which was BiOCl‐(001) single crystal nanosheets.

[0041] (2) Measure 12mL of ethylene glycol into a round bottom flask, stir at 105°C for 30min, add 95mg of PVP and 120mg of CTAB, continue stirring until the two are completely dissolved, then add 30mg of BiOCl-(001) prepared in step (1) , continue to stir for 5h, so that BiOCl‐(001) is evenly distributed in the above solution, and the suspension at this time is called A. In addition, weigh 100mgAgNO at room temperature 3 , which was dissolved in 3.0 mL of ethylene glycol, called solution B. While stirring...

Embodiment 2

[0043] The specific preparation steps of 2#Ag / AgBr / BiOCl‐(001) nanocomposites are as follows:

[0044] (1) Preparation of BiOCl‐(001)

[0045] With the preparation method of BiOCl-(001) among the embodiment 1.

[0046] (2) Preparation of Ag / AgBr / BiOCl‐(001) nanocomposites

[0047] Measure 12mL of ethylene glycol into a round bottom flask, stir at 60°C for 30min, add 95mg of PVP and 120mg of CTAB, continue to stir until the two are completely dissolved, then add 30mg of BiOCl-(001) prepared in step (1), and continue to stir 5h, so that BiOCl‐(001) is evenly distributed in the above solution, and the suspension at this time is called A. In addition, weigh 100mgAgNO at room temperature 3 , which was dissolved in 3.0 mL of ethylene glycol, called solution B. While stirring, drop solution B into suspension A with a plastic dropper, stir for 30 minutes, raise the temperature to 155°C, keep it for 15 minutes, and the reaction ends. The reactant was cooled to room temperature, ce...

Embodiment 3

[0049] The specific preparation steps of 3#Ag / AgBr / BiOCl‐(001) nanocomposite are as follows:

[0050] (1) Preparation of BiOCl‐(001)

[0051] With the preparation method of BiOCl-(001) among the embodiment 1.

[0052](2) Preparation of Ag / AgBr / BiOCl‐(001) nanocomposites

[0053] Measure 12mL of ethylene glycol into a round bottom flask, stir at 120°C for 30min, add 95mg of PVP and 120mg of CTAB, continue to stir until the two are completely dissolved, then add 30mg of BiOCl-(001) prepared in step (1), and continue to stir 5h, so that BiOCl‐(001) is evenly distributed in the above solution, and the suspension at this time is called A. In addition, weigh 100mgAgNO at room temperature 3 , which was dissolved in 3.0 mL of ethylene glycol, called solution B. While stirring, drop solution B into suspension A with a plastic dropper, stir for 30 minutes, raise the temperature to 155°C, keep it for 15 minutes, and the reaction ends. The reactant was cooled to room temperature, cen...

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Abstract

The invention discloses a preparing method and application of an Ag / AgBr / BiOCl-(001) nanometer composite material, and belong to the field of photocatalysts. The active component of the composite material is Ag / AgBr / BiOCl-(001). The material is characterized in that based on the combination of the crystal surface engineering technology and the surface plasmon resonance effect, Ag / AgBr colloidal spheres and (001)-surface-exposed BiOCl nanometer sheets (BiOCl-(001)) are composited to prepare the three-component composite photocatalyst Ag / AgBr / BiOCl-(001) is prepared. The preparing method includes the steps that ethylene glycol serves as a solvent, a certain amount of PVP and a certain amount of CTAB are weighed and put into a round-bottom flask, the mixture is fully stirred at the certain temperature to be fully dissolved, a proper amount of BiOCl-(001) is added, stirring is carried out at the constant temperature, then a proper quantity of ethylene-glycol Ag (NO3)3 solutions is slowly added, and the mixture is reacted at the temperature of 155 DEG C for 15 min, and is cooled, washed, dried to obtain the target product. The prepared Ag / AgBr / BiOCl-(001) nanometer composite material can serve as a photocatalyst to be used for the degrading reaction of methyl orange, and has the good catalytic effect and the stability.

Description

technical field [0001] The invention belongs to the field of photocatalysts, in particular to a preparation technology of a three-component photocatalyst containing bismuth oxychloride (BiOCl) nanosheets and Ag / AgBr colloidal spheres, in particular to a BiOCl containing GO and an exposed (001) surface Preparation technology of photocatalyst Ag / AgBr / BiOCl‐(001) composited with nanosheets (BiOCl‐(001)) and Ag / AgBr colloidal spheres. The present invention combines crystal surface engineering technology and surface plasmon resonance effect to disperse highly dispersed Ag / AgBr colloidal spheres on BiOCl‐(001) nanosheets to prepare nanocomposite photocatalyst Ag / AgBr / BiOCl‐(001), And used in the photodegradation of methyl orange (MO) achieved a good catalytic effect. Background technique [0002] Environmental issues and energy issues are two major challenges facing the sustainable development of mankind in the 21st century. Semiconductor photocatalysis technology using clean so...

Claims

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Application Information

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IPC IPC(8): B01J27/10A62D3/17A62D3/176A62D101/26A62D101/28
CPCA62D3/17A62D3/176B01J27/10A62D2101/28A62D2101/26B01J35/39
Inventor 陈国昌叶明富乔红斌章昌华蒋伟峰
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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