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Preparation method and application of CuNi-Cu2O/NiAlOx nano composite material with two-dimensional layered structure

A nanocomposite material, cuni-cu2o technology, applied in the field of photocatalysis, can solve problems such as limiting effectiveness, and achieve the effect of convenient and simple product processing, abundant reserves, and high purity

Active Publication Date: 2021-07-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rapid activity decay caused by severe agglomeration limits the effectiveness of its application

Method used

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  • Preparation method and application of CuNi-Cu2O/NiAlOx nano composite material with two-dimensional layered structure
  • Preparation method and application of CuNi-Cu2O/NiAlOx nano composite material with two-dimensional layered structure
  • Preparation method and application of CuNi-Cu2O/NiAlOx nano composite material with two-dimensional layered structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (1) Preparation of CuNiAl-LDH

[0074] In the first step, weigh 426.2mg of copper chloride dihydrate and dissolve it in a 250mL volumetric flask. Transfer 7.5ml with a pipette gun to a polytetrafluoroethylene reaction kettle;

[0075] In the second step, take 594.2 mg of nickel chloride hexahydrate and dissolve it in a 250 mL volumetric flask. Transfer 3.3ml with a pipette gun to a polytetrafluoroethylene reaction kettle;

[0076] In the third step, weigh 603.6 mg of aluminum chloride hexahydrate and dissolve it in a 250 mL volumetric flask. Transfer 2.7ml with a pipette gun to a polytetrafluoroethylene reaction kettle;

[0077] In the fourth step, weigh 1.501 g of urea and dissolve it in a 250 mL volumetric flask. Pipette 7.5ml and transfer it to a polytetrafluoroethylene reaction kettle;

[0078] The fifth step is to place the reaction kettle in an electric constant temperature blast drying oven, raise the temperature from room temperature to 140°C at a rate of 2...

Embodiment 2

[0097] (1) Preparation of CuNiAl-LDH

[0098] In the first step, weigh 456.4mg of copper acetate monohydrate and dissolve it in a 250mL volumetric flask. Transfer 7.5ml to a three-neck round bottom flask with a pipette;

[0099] In the second step, weigh 534.8 mg of nickel nitrate hexahydrate and dissolve it in a 250 mL volumetric flask. Transfer 3ml to a three-neck round bottom flask with a pipette gun;

[0100] In the third step, weigh 593.2 mg of aluminum nitrate nonahydrate and dissolve it in a 250 mL volumetric flask. Transfer 2.5ml to a three-neck round bottom flask with a pipette;

[0101] In the fourth step, weigh 1.83g of urea and dissolve it in a 250mL volumetric flask. Transfer 7ml to a three-neck round bottom flask with a pipette gun;

[0102] Step 5: Place the three-necked round-bottomed flask in an oil bath, raise the temperature from room temperature to 90°C at a rate of 2°C / min and keep it warm for 15 hours;

[0103] The sixth step, wait until the reactio...

Embodiment 3

[0109] (1) Preparation of CuNiAl-LDH

[0110] In the first step, weigh 91.8 mg of copper acetate monohydrate and dissolve it in a 250 mL volumetric flask. Transfer 6.5ml with a pipette gun to a polytetrafluoroethylene reaction kettle;

[0111] In the second step, weigh 544.2 mg of nickel acetate tetrahydrate and dissolve it in a 250 mL volumetric flask. Use a pipette gun to transfer 3ml to a polytetrafluoroethylene reaction kettle;

[0112] In the third step, weigh 589.5 mg of aluminum nitrate nonahydrate and dissolve it in a 250 mL volumetric flask. Use a pipette gun to transfer 3ml to a polytetrafluoroethylene reaction kettle;

[0113] In the fourth step, weigh 0.391 g of urea and dissolve it in a 250 mL volumetric flask. Pipette 7.5ml and transfer it to a polytetrafluoroethylene reaction kettle;

[0114] The fifth step is to place the reaction kettle in an electric constant temperature blast drying oven, raise the temperature from room temperature to 160°C at a rate of...

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Abstract

The invention relates to a CuNi-Cu2O / NiAlOx nano composite material with a two-dimensional layered structure. The CuNi-Cu2O / NiAlOx nano composite material comprises CuNi, Cu2O and NiAlOx. The preparation method comprises the following steps of: (1) fully dissolving a copper salt, a nickel salt and an aluminum salt in deionized water, and synthesizing CuNiAl-LDH with a two-dimensional nanosheet structure through a hydrothermal synthesis method; (2) calcining the prepared CuNiAl-LDH to form a multi-metal oxide which is uniformly dispersed; and (3) carrying out high-temperature reduction on a prepared multi-metal oxide in an H2 atmosphere to obtain the CuNi-Cu2O / NiAlOx nano composite material. The nano composite material is applied to photocatalysis, and especially can be used for converting aromatic nitro compound pollutants into aromatic amino compounds. The photoreaction catalyst has excellent photocatalytic performance and is relatively stable. The process is simple, the preparation condition is universal, the product is stable in morphology and high in purity, product treatment is convenient and simple, and the method is suitable for medium-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and relates to the technology of transforming aromatic nitro compounds, especially a catalyst which can be used for transforming aromatic nitro compounds. Background technique [0002] Aromatic nitro compounds have attracted extensive attention as important industrial intermediates in the production of fine chemicals and pharmaceuticals. So far, the direct catalytic reduction of aromatic nitro compounds has become an important way for its efficient and environmentally friendly process. However, limited by the reduction and conversion efficiency of aromatic nitro compounds, the residual solution in the industrial production process contains a large amount of unconverted aromatic nitro compounds, and these unconverted aromatic nitro compounds enter the subsequent sewage treatment equipment, which will not only cause economic losses , and will increase the burden of sewage treatment. Aromat...

Claims

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Application Information

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IPC IPC(8): B01J23/755C02F1/30C02F101/38
CPCB01J23/755C02F1/30C02F2305/10C02F2101/38B01J35/39Y02W10/37
Inventor 温鸣傅琳吴丹丹周为
Owner TONGJI UNIV
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