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Photocatalytic hydrogen production catalyst as well as preparation method and application thereof

A technology of photocatalysis and catalyst, which is applied in the field of photocatalytic hydrogen production catalyst and its preparation, and can solve the problems that new and efficient photocatalysts need to be developed.

Pending Publication Date: 2021-09-14
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previous experimental results show that based on existing catalysts, there are still limitations in raw material storage and price, production procedures, hydrogen production efficiency, etc., and new and efficient photocatalysts still need to be developed

Method used

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  • Photocatalytic hydrogen production catalyst as well as preparation method and application thereof
  • Photocatalytic hydrogen production catalyst as well as preparation method and application thereof
  • Photocatalytic hydrogen production catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 BPO Z preparation of

[0023] Mix and grind 0.4mol boron powder and 0.3mol red phosphorus powder for one hour, pour it into a crucible, put it into a tube furnace, pass argon, heat to 980°C at a heating rate of 8°C / min, and then keep the temperature for 3 hours. After grinding, pour 150ml of dilute nitric acid solution (nitric acid: water = 1:75) and stir for 5 hours, then centrifuge, dry, and grind again to obtain BPO Z powder.

Embodiment 2

[0024] Example 2 BPO Z / g -C 3 N 4 preparation of

[0025] 0.1gBPO Z Mix it with 15g urea, grind it for half an hour, pour it into a crucible, cover the crucible cover with tin foil, burn at 550°C for 3 hours, and get BPO after grinding Z / g -C 3 N 4 ( figure 1 ), the product is gray-green powder.

Embodiment 3

[0026] Example 3 BPO Z / g -C 3 N 4 performance research

[0027] To the BPO prepared in embodiment 2 Z / g -C 3 N 4 Perform X-ray powder diffraction analysis, in the XRD spectrum ( figure 2 ) shows sharp absorption peaks near 2θ=27°, 34°, 57° and 69°, which indicates that the product has a good crystal structure and high crystallinity. High crystallinity can improve the catalytic activity of the catalyst, and the composite has better photocatalytic activity.

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Abstract

The invention provides a photocatalytic hydrogen production catalyst BPOZ / g-C3N4 as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic hydrolysis hydrogen production, wherein Z is greater than or equal to 0 and less than or equal to 0.05. The BPOZ / g-C3N4 composite photocatalyst disclosed by the invention is synthesized by adopting a solid-phase method, and the main process comprises the steps of calcining phosphorus and boron serving as raw materials to obtain BPOZ; and carrying out thermal polymerization reaction on the BPOZ and urea to obtain the BPOZ / g-C3N4 composite photocatalyst. The composite material synthesized by the method effectively reduces the recombination rate of photo-induced electron holes, enhances the utilization rate of sunlight, and has excellent performance of producing hydrogen by photolysis of water. Meanwhile, the composite material is simple in synthesis process, low in cost, high in stability and beneficial to actual production and use.

Description

technical field [0001] The invention relates to a photocatalytic hydrogen production catalyst and its preparation method and application, which are applied in the field of photocatalytic hydrolysis hydrogen production. Background technique [0002] With the development of the times and the progress of the industrial level, the problems of energy shortage and environmental pollution have become increasingly prominent, and it is imperative to develop clean, green and renewable new energy. At present, solar energy is considered to be one of the most promising new energy sources due to its inexhaustible advantages. Improving the utilization efficiency of solar energy has important strategic significance for changing the energy consumption structure. Using solar energy to realize photolysis of water to produce hydrogen will be an important way to promote the development of hydrogen energy economy and solve the environmental and energy crises. Among the many methods of solar ene...

Claims

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Application Information

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IPC IPC(8): B01J27/24C01B3/04
CPCB01J27/24C01B3/042B01J35/39Y02E60/36
Inventor 田跃李颖田碧凝
Owner TAIYUAN UNIV OF TECH