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ZnO/Ni3 [Ge2O5].(OH) 4 composite material as well as preparation method and application thereof

A composite material and solution technology, applied in chemical instruments and methods, water/sludge/sewage treatment, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of high electron-hole pair recombination rate and low electron Yield, strong photocorrosion and other problems, to achieve the effect of simple and easy operation, promoting removal, and expanding surface area

Pending Publication Date: 2021-10-01
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ZnO also has certain disadvantages. For example, the photoresponse of ZnO is mainly in the ultraviolet region, and the visible light activity is relatively small. practical application

Method used

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  • ZnO/Ni3 [Ge2O5].(OH) 4 composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) ZnO / Ni 3 [Ge 2 o 5 ]·(OH) 4 Preparation of composite materials:

[0021] Step 1: Weigh 0.2gNi 3 [Ge 2 o 5 ]·(OH) 4 Put the powder solid in a beaker, add 10ml of deionized water, and use an ultrasonic cleaner for 15 minutes to ultrasonically disperse;

[0022] Step 2: Weigh 0.136g ZnCl 2 The solid is added to the solution dispersed in the first step, and ultrasonically dispersed for a certain period of time.

[0023] Step 3: Take a certain amount of ammonia solution and a certain amount of deionized water and mix them in a volume ratio of 1:2 to obtain a dilute ammonia solution.

[0024] Step 4: Titrate and adjust the dispersed solution in the second step with the dilute ammonia solution obtained in the third step, so that the pH of the solution is 7-7.5.

[0025] Step 5: Stir the solution obtained in Step 4 under a magnetic stirrer for 2 hours, obtain a filter residue by filtration, and rinse with deionized water for 3-5 times.

[0026] Step 6: Dry the fi...

Embodiment 2

[0032] (1) ZnO / Ni 3 [Ge 2 o 5 ]·(OH) 4 The preparation method of the composite material is as in Example 1.

[0033] (2) ZnO / Ni prepared by the above method 3 [Ge 2 o 5 ]·(OH) 4 Application of composite materials in dye wastewater treatment:

[0034] Step 1: Weigh a certain amount of rhodamine B powder solid and dissolve it in deionized water so that the concentration of rhodamine B is 30mg / L, and carry out ultrasonic dispersion. The obtained solution is used as the treated raw water, and rhodamine B is used as the target pollution thing;

[0035] The second step: add 10mgZnO / Ni to the solution obtained in the first step 3 [Ge 2 o 5 ]·(OH) 4The composite material is subjected to photocatalytic reaction, first avoid light and stir for 30 minutes, then take out a certain volume of solution for measurement to determine the concentration of Rhodamine B in the initial solution, then transfer it to the photocatalytic reaction device, and then use a 250W xenon lamp to irr...

Embodiment 3

[0037] (1) ZnO / Ni 3 [Ge 2 o 5 ]·(OH) 4 The preparation method of the composite material is as in Example 1.

[0038] (2) ZnO / Ni prepared by the above method 3 [Ge 2 o 5 ]·(OH) 4 Application of composite materials in dye wastewater treatment:

[0039] Step 1: Weigh a certain amount of rhodamine B powder solid and dissolve it in deionized water so that the concentration of rhodamine B is 30mg / L, and carry out ultrasonic dispersion. The obtained solution is used as the treated raw water, and rhodamine B is used as the target pollution thing;

[0040] The second step: add 15mg ZnO / Ni to the solution obtained in the first step 3 [Ge 2 o 5 ]·(OH) 4 The composite material is subjected to photocatalytic reaction, first avoid light and stir for 30 minutes, then take out a certain volume of solution for measurement to determine the concentration of Rhodamine B in the initial solution, then transfer it to the photocatalytic reaction device, and then use a 250W xenon lamp to i...

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Abstract

The invention provides a ZnO / Ni3[Ge2O5]. (OH) 4 composite material and a preparation method and an application thereof. Layered Ni3[Ge2O5].(OH) 4 is used as a basic base material, ZnO particles are evenly loaded on a Ni3[Ge2O5].(OH)4 nanodisk, according to the preparation method, the ZnO / Ni3[Ge2O5].(OH) 4 composite material is synthesized in one step through a deposition method, by means of the material, the surface area of ZnO is effectively increased, the charge separation efficiency is improved, the light quantum yield of ZnO is improved, the light absorption wavelength is expanded, and the activity of photocatalytic reaction is improved. The photocatalytic composite material prepared by the invention is relatively high in activity, is beneficial to further promoting the application of a photocatalytic technology in sewage treatment, and provides a strong and powerful support for removing rhodamine B in dye wastewater.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a ZnO / Ni 3 [Ge 2 o 5 ]·(OH) 4 Composite materials and their preparation methods and applications. Background technique [0002] Photocatalytic technology using semiconductor nanomaterials titanium dioxide TiO 2 As a representative, it can catalyze and decompose bacteria and pollutants by using natural light. It has the characteristics of high catalytic activity, good chemical stability and thermal stability, no secondary pollution, non-irritating, safe and non-toxic, and can benefit the ecology for a long time. The natural environment is one of the most promising green catalysts. Compared with titanium dioxide, zinc oxide has the same bandgap width, but the production process of zinc oxide is simple and the cost is low, so it has become a widely researched photocatalytic semiconductor material. Zinc oxide has a wide bandgap (3.4eV) and is considered a promising sem...

Claims

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Application Information

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IPC IPC(8): B01J23/835C02F1/30C02F101/30
CPCB01J23/835C02F1/30C02F2101/308C02F2305/10B01J35/39
Inventor 闵涛马国华刘桂君郑玉婷
Owner SOUTHWEAT UNIV OF SCI & TECH
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