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Nano-porous Cu/CeO2 composite photocatalytic material and preparation method thereof

A composite photocatalysis and nanoporous technology, applied in the field of nanocomposite materials and photocatalysis, can solve the problems of complex reaction system, long preparation period and slow reaction speed, and achieve the effect of simple reaction system, short preparation period and fast reaction.

Active Publication Date: 2021-06-25
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a nanoporous Cu / CeO 2 The composite photocatalytic material and its preparation method solve the problems of complex reaction system, slow reaction speed, high cost and long preparation period in the existing solution combustion synthesis reaction system

Method used

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  • Nano-porous Cu/CeO2 composite photocatalytic material and preparation method thereof
  • Nano-porous Cu/CeO2 composite photocatalytic material and preparation method thereof
  • Nano-porous Cu/CeO2 composite photocatalytic material and preparation method thereof

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preparation example Construction

[0037] Nanoporous Cu / CeO 2 The preparation method of composite photocatalytic material comprises the following steps:

[0038] (1) Configuration solution: add 1.73-2.61g of Ce(NO 3 ) 3 ·6H 2 O, 1.62-2.43g of C 4 h 6 o 6 , 0~1.31g of Cu(NO 3 ) 2 ·3H 2 O, mixed into a homogeneous clear solution;

[0039] (2) Stir the solution obtained in step (1) evenly, after fully dissolving, move it into a heating type magnetic stirrer, stir and heat, set the rotation speed at 300-500 rpm, and the temperature at 80-120°C, evaporate the excess water to obtain Gel-like precursor; then pour the precursor into a quartz boat, then transfer the quartz boat to a tubular heating furnace, vacuumize and pass argon to heat, and the whole reaction is carried out in an argon atmosphere; after the reaction is completed , with the furnace cooling to room temperature, the collected powder is Cu / CeO 2 Composite photocatalytic materials.

[0040] In the described reaction raw material, cerium nitra...

Embodiment 1

[0045] Embodiment 1: This embodiment provides a nanoporous Cu / CeO 2 Composite photocatalytic materials, figure 1 Nanoporous Cu / CeO prepared for the present invention 2 The XRD pattern of the composite photocatalytic material, wherein Figure (a1) is the specific XRD pattern of Example 1.

[0046] Figure 2a Nanoporous Cu / CeO prepared for the present invention 2 The SEM image of the composite photocatalytic material is the specific SEM image of Example 1.

[0047] Figure 4 For the present invention is the Cu / CeO measured by the methyl orange of 20mg / L as pollutant 2 The photocatalytic curve diagram of photocatalytic material, wherein figure (a1) is the concrete photocatalytic curve diagram of embodiment 1.

[0048] The preparation method of this catalyst comprises the following steps:

[0049] Take 2.17g of Ce(NO 3 ) 3 ·6H 2 O, 1.05g of C 4 h 6 o 6 , 0g of Cu(NO 3 ) 2 ·3H 2 O Dissolve it in 10ml deionized water, stir until a clear and transparent solution, evapo...

Embodiment 2

[0050] Embodiment 2: This embodiment provides a nanoporous Cu / CeO 2 Composite photocatalytic materials, figure 1 Nanoporous Cu / CeO prepared for the present invention 2 The XRD pattern of the composite photocatalytic material, wherein Figure (a2) is the specific XRD pattern of Example 2.

[0051] Figure 4 For the present invention is the Cu / CeO measured by the methyl orange of 20mg / L as pollutant 2 The photocatalytic curve diagram of photocatalytic material, wherein figure (a2) is the concrete photocatalytic curve diagram of embodiment 2.

[0052] The preparation method of this catalyst comprises the following steps:

[0053] Take 2.17g of Ce(NO 3 ) 3 ·6H 2 O, 1.29g of C 4 h 6 o 6 , 0.32g of Cu(NO 3 ) 2 ·3H 2 O, dissolve it in 10ml deionized water, stir until a clear and transparent solution, evaporate the excess water to obtain a gel-like precursor, then pour the precursor into a quartz boat and transfer it to a tube furnace and set it at 600°C for 30min , the w...

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Abstract

The invention discloses a nano-porous Cu / CeO2 composite photocatalytic material and a preparation method thereof, and belongs to the technical field of nano-porous composite materials and photocatalysis. The preparation method comprises the following steps: (1) preparing a solution: adding 1.73 to 2.61 g of Ce(NO3)3.6H2O, 1.62 to 2.43 g of C4H6O6 and 0 to 1.31 g of Cu(NO3)2.3H2O into 10 ml of deionized water, and mixing to form a uniform and clear solution; and (2) transferring the solution prepared in the step (1) to a heatable magnetic stirrer, setting the rotating speed to be 300-500 revolutions and the temperature to be 80-120 DEG C, and evaporating excessive water to obtain a gel precursor; transferring the precursor into a quartz boat, putting the quartz boat into a tubular furnace, vacuumizing, introducing argon, heating, and carrying out the whole reaction in an argon atmosphere; and after the reaction is finished, cooling to room temperature along with the furnace to obtain the Cu / CeO2 composite photocatalytic material. The nano-porous Cu / CeO2 composite photocatalytic material and the preparation method thereof have the advantages that the process method is simple, the reaction time is short, the material with high specific surface area, high photocatalytic activity and the micromorphology of nano-porous lamellar is obtained in one step, the pore size, the pore volume and the lamellar thickness are controlled, and the material is applied to the fields of photocatalysis and water pollution treatment.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials and photocatalysis, in particular to a nanoporous Cu / CeO 2 Composite photocatalytic material and preparation method thereof. Background technique [0002] With the rapid development of modern industry, the disposal of organic pollutants has become one of the most serious environmental problems. In recent years, various techniques have been employed to remove organic pollutants, including adsorption, biodegradation, chemical oxidation, and electrochemical conversion / combustion, etc. Photocatalytic degradation of dyes using solar energy is an efficient and economical way among these methods. Many existing oxide semiconductors (such as ZnO, TiO 2 and ZrO 2 etc.) have been used to degrade organic dyes. It is worth noting that cerium oxide (CeO 2 ) have attracted extensive attention from scientists due to their excellent oxidative properties, storage / release functions, strong redo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/02B01J35/10C02F1/30C02F101/38
CPCB01J23/83C02F1/30C02F2101/40C02F2305/10B01J35/39B01J35/40B01J35/613B01J35/638B01J35/647
Inventor 王晓虹商智超余勇杨忠翔任宣儒
Owner CHINA UNIV OF MINING & TECH
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