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Preparation method and application of bismuth vanadate photocatalyst with surface modified cobalt copper oxide

A surface modification and photocatalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of easy to obtain raw materials, good effect and improved activity

Active Publication Date: 2021-03-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CuCo containing both cobalt and copper 2 o 4 As a kind of spinel, it is rich in content, cheap and stable, and has excellent oxygen reduction and water oxidation properties, which has attracted everyone's favor in the field of (photo)electrocatalysis, but CuCo 2 o 4 Combination with bismuth vanadate has not been reported

Method used

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  • Preparation method and application of bismuth vanadate photocatalyst with surface modified cobalt copper oxide
  • Preparation method and application of bismuth vanadate photocatalyst with surface modified cobalt copper oxide
  • Preparation method and application of bismuth vanadate photocatalyst with surface modified cobalt copper oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Weigh 5mmol Co(NO 3 ) 2 , 2.5mmol Cu(NO 3 ) 2 and KOH were put into 80 mL of isopropanol, stirred at 60°C for 2 h to obtain a uniform suspension A1.

[0049] (2) Move A1 into a 100mL reactor and react at 160°C for 1 hour to obtain material B1.

[0050] (3) Centrifuge and wash B1 several times, dry in an oven at 60°C for 12 hours, and grind to obtain black C1 (CuCo 2 o X ).

Embodiment 2

[0052] (1) Weigh 5mmol Co(NO 3 ) 2 and KOH were put into 80 mL of isopropanol, stirred at 60°C for 2 h to obtain a uniform suspension A2.

[0053] (2) Move A2 into a 100mL reactor and react at 160°C for 1 hour to obtain material B2.

[0054] (3) Centrifuge and wash B2 several times, dry in an oven at 60°C for 12 hours, and grind to obtain C2(CoO X ).

Embodiment 3

[0056] (1) Weigh 2.5mmol Cu(NO 3 ) 2 and KOH were put into 80 mL of isopropanol, and stirred at 60° C. for 2 h to obtain a uniform suspension A3.

[0057] (2) Move A3 into a 100mL reactor and react at 160°C for 1 hour to obtain material B3.

[0058] (3) Centrifuge and wash B3 several times, dry in an oven at 60°C for 12 hours, calcinate at 350°C for 3 hours, and then grind to obtain C3(CuO X ).

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Abstract

The invention discloses a preparation method and application of a bismuth vanadate photocatalyst with a cobalt-copper oxide modified surface. According to the preparation method, the cobalt-copper oxide containing CuCo2O4, CoOX and CuOX simultaneously is successfully prepared in a tert-butyl alcohol solvent through a one-step hydrothermal synthesis method, and then the cobalt-copper oxide is uniformly loaded on the surface of bismuth vanadate. Research finds that the cobalt-copper oxide containing multiple components simultaneously can greatly improve the phenol degradation activity of bismuthvanadate, and compared with CuCo2O4, CoOX, CuOX and even Pt modified bismuth vanadate, the cobalt-copper oxide has a higher phenol degradation rate. The composite catalyst has a good degradation effect on various other organic pollutants and can be widely applied to the field of sewage treatment. In addition, the cobalt-copper oxide well combines the advantages of CuCo2O4, CuOX and CoOX and has ahigh promotion effect on bismuth vanadate (photo-catalytic) electro-catalytic oxygen reduction and water oxidation and also has a good application prospect in the field of (photo-catalytic) electro-catalytic water decomposition.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis and (photo)electrocatalysis, relates to a method for modifying the surface of a semiconductor photocatalyst, and more specifically provides a method for preparing a surface cobalt-copper oxide-modified bismuth vanadate photocatalyst and visible light catalytic degradation of organic matter and Use of (photo)electrocatalytic water oxidation and oxygen reduction. Background technique [0002] In recent years, the continuous energy crisis and environmental pollution have become two major crises facing mankind. In order to solve these two problems, it is urgent to find an environmentally friendly treatment technology for energy regeneration. Semiconductor photocatalysis technology stands out because of its ability to directly absorb solar energy and convert it into chemical energy. It is considered to be the best solution to the environmental and energy crises. effective technical means. In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/847C25B11/091C25B1/04C02F1/30B01D53/86B01D53/72C02F101/30C02F101/34C02F101/38
CPCB01D53/8668B01J23/8472B01J35/0033B01J35/004C02F1/30C02F2101/30C02F2101/308C02F2101/345C02F2101/38C02F2101/40C02F2305/10C25B1/04C25B11/04Y02E60/36
Inventor 陈敏许宜铭
Owner ZHEJIANG UNIV
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