Preparation method for an Ag/AgBr/GO nano-composite photocatalyst

A photocatalyst and nanocomposite technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve cumbersome problems, achieve high catalytic efficiency, good catalytic stability, and simple preparation process Effect

Active Publication Date: 2014-10-15
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of Ag / AgBr / GO nanocomposites by microemulsion method is relatively cumbersome. Wang et al. prepared sheet-like Ag / AgBr / GO nanocomposites, while Zhang et al. prepared AgAgCl / GO nanocomposites by solution method. Composite materials, using hydrochloric acid as the chlorine source, also without the use of surfactants
And the double surfactant method that the present invention adopts prepares Ag / AgBr / GO nanocomposite material and has no report

Method used

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  • Preparation method for an Ag/AgBr/GO nano-composite photocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The specific preparation steps of 1#Ag / AgBr / GO nanocomposite are as follows:

[0028] (1) Preparation of GO

[0029] 0.5g graphite powder and 1.5g KMnO 4 Put 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, heat up to 98 °C, stir for 15 min, and transfer the mixture to ice In the 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, fully wash until the pH of the supernatant is 7, and dry the lower sediment to obtain GO.

[0030] (2) Preparation of Ag / AgBr / GO nanocomposites

[0031] Measure 12 mL of ethylene glycol and put it into a round-bottomed flask, stir at a constant temperature of 60 °C for 30 min, add 54 mg of PVP and 120 mg of CTAB, continue to stir until the two are completely dissolv...

Embodiment 2

[0033] The specific preparation steps of 2#Ag / AgBr / GO nanocomposites are as follows:

[0034] (1) Preparation of GO

[0035] The same as the preparation method of GO in Example 1.

[0036] (2) Preparation of Ag / AgBr / GO nanocomposites

[0037] Measure 12 mL of ethylene glycol and put it into a round-bottomed flask, stir at a constant temperature of 60 °C for 30 min, add 95 mg of PVP and 120 mg of CTAB, continue to stir until the two are completely dissolved, then add 5 mg of GO prepared by the above method, and continue to stir for 2 h to make GO is uniformly distributed in the above solution, and the suspension at this time is called A. In addition, weigh 100mg AgNO at room temperature 3 , which was dissolved in 1.5 mL of ethylene glycol, called solution B. Under stirring, drop solution B into suspension A with a plastic dropper, stir for 30 min, increase the temperature to 155°C, and stir for 15 min to complete the reaction. The reactants were cooled to room temperature,...

Embodiment 3

[0039] The specific preparation steps of 3#Ag / AgBr / GO nanocomposites are as follows:

[0040] (1) Preparation of GO

[0041] The same as the preparation method of GO in Example 1.

[0042] (2) Preparation of Ag / AgBr / GO nanocomposites

[0043] Measure 12 mL of ethylene glycol and put it into a round-bottomed flask, stir at a constant temperature of 60 °C for 30 min, add 150 mg of PVP and 120 mg of CTAB, continue to stir until the two are completely dissolved, then add 5 mg of GO prepared by the above method, and continue to stir for 2 h to make GO is uniformly distributed in the above solution, and the suspension at this time is called A. In addition, weigh 100mg AgNO at room temperature 3 , which was dissolved in 1.5 mL of ethylene glycol, called solution B. Under stirring, drop solution B into suspension A with a plastic dropper, stir for 30 min, increase the temperature to 155°C, and stir for 15 min to complete the reaction. The reactants were cooled to room temperature...

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Abstract

The invention discloses a preparation method for an Ag/AgBr/GO nano-composite photocatalyst containing graphene oxide (GO), and belongs to the field of photocatalysts. Active components of the Ag/AgBr/GO nano-composite photocatalyst are Ag/AgBr/GO; the structure is that Ag/AgBr colloidal spheres are uniformly distributed on the layer-shaped GO. The preparation method is simple, and is fulfilled according to an one-step method; PVP and CTAB are adopted as surfactants; the CTAB is source of the BR<-> at the same time; first, the PVP and the CTAB are dissolved in glycol at a certain temperature; the GO and AgNO3 are added; reaction is conducted at 155 DEG C for 15 min to obtain the Ag/AgBr/GO nano-composite material. The prepared Ag/AgBr/GO nano-composite material is adopted as a photocatalyst, is used for light degradation of rhodamine, and acquires excellent catalyzed effect; meanwhile, the catalyst shows favorable stability.

Description

technical field [0001] The invention belongs to the field of photocatalysts, in particular to a preparation technology of a photocatalyst Ag / AgBr / GO nanocomposite material containing graphene oxide (GO), in particular to an Ag / AgBr / GO nanocomposite material with controllable morphology and composition Preparation technology of composite materials. The Ag / AgBr / GO nano-composite material prepared by the invention is a photocatalyst, and a good catalytic effect is obtained for photodegradation of rhodamine. Background technique [0002] Multicomponent hybrid materials with controllable morphology and composition have great potential applications in the fields of catalysis, solar energy conversion and optoelectronic 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.). Gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/08C02F1/30
Inventor 陈国昌古绪鹏吴胜华
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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