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A construction method of photocatalytic system based on nickel nanoparticle co-catalyst

A technology of nanoparticles and co-catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Catalytic decomposition of water to hydrogen production industrialization development and other issues, to achieve high-efficiency photocatalytic hydrogen production performance, wide applicability and good repeatability

Active Publication Date: 2019-12-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, semiconductor photocatalysts need to support a certain amount of noble metals (such as platinum) as co-catalysts to achieve hydrogen production by photocatalytic water splitting, which greatly increases the cost of photocatalytic water splitting for hydrogen production and limits the photocatalytic water splitting for hydrogen production. industrial development

Method used

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  • A construction method of photocatalytic system based on nickel nanoparticle co-catalyst
  • A construction method of photocatalytic system based on nickel nanoparticle co-catalyst
  • A construction method of photocatalytic system based on nickel nanoparticle co-catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1: Add 100.0mg of polyvinylpyrrolidone (PVP K30) and 20mL of ethylene glycol into a 125mL three-necked flask and dissolve completely, then place the three-necked flask in a 120°C oil bath and heat and stir until the temperature After stabilization, add 63.0 mg of NaBH to the solution 4 , The reaction solution was continuously heated and stirred for 2h to obtain a transparent solution, which was recorded as Ni0.

[0044] Step 2: Prepare g-C by roasting 10g of urea at 600°C for 3h 3 N 4 ;

[0045] Step 3: Select the prepared g-C 3 N 4 As a photocatalyst, triethanolamine was used as a sacrificial agent for hydrogen production, and NiO dispersion was added to the reaction solution for photocatalytic hydrogen production. Specific steps are as follows:

[0046] (1) Add 50.0 mg of g-C to a reactor with a volume of 250 mL 3 N 4 Photocatalyst, adding NiO dispersion liquid, and a total volume of 200mL triethanolamine content of 10vol% aqueous solution as a sacrificia...

Embodiment 2

[0050] Step 1: Add 100.0mg of polyvinylpyrrolidone (PVP K30) and 20mL of ethylene glycol into a 125mL three-necked flask and dissolve completely, then place the three-necked flask in a 120°C oil bath and heat and stir until the temperature After stabilization, add 63.0 mg of NaBH to the solution 4 , The reaction solution was continuously heated and stirred for 2h to obtain a transparent solution, which was recorded as Ni0.

[0051] Step 2: Prepare g-C by roasting 10g of urea at 600°C for 3h 3 N 4 ;

[0052] Step 3: Select the prepared g-C 3 N 4 As a photocatalyst, methanol was used as a sacrificial agent for hydrogen production, and NiO dispersion was added to the reaction solution for photocatalytic hydrogen production. Specific steps are as follows:

[0053] (1) Add 50.0 mg of g-C to a reactor with a volume of 250 mL 3 N 4 Photocatalyst, add NiO dispersion liquid, and a total volume of 200mL of methanol content of 20vol% aqueous solution as a sacrificial agent;

[0...

Embodiment 3

[0057] Step 1: Add 100.0mg of polyvinylpyrrolidone (PVP K30) and 20mL of ethylene glycol into a 125mL three-necked flask and dissolve completely, then place the three-necked flask in a 120°C oil bath and heat and stir until the temperature After stabilization, add 63.0 mg of NaBH to the solution 4 , The reaction solution was continuously heated and stirred for 2h to obtain a transparent solution, which was recorded as Ni0.

[0058] Step 2: Buy commercial P25 as TiO 2 catalyst of light;

[0059] Step 3: Select the prepared TiO 2 As a photocatalyst, methanol was used as a sacrificial agent for hydrogen production, and NiO dispersion was added to the reaction solution for photocatalytic hydrogen production. Specific steps are as follows:

[0060] (1) Add 50.0 mg of TiO to a reactor with a volume of 250 mL 2 Photocatalyst, add NiO dispersion liquid, and a total volume of 200mL of methanol content of 20vol% aqueous solution as a sacrificial agent;

[0061] (2) Nitrogen was pu...

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Abstract

The invention provides a method for constructing a photocatalytic system based on nickel nanoparticle cocatalyst. This method first prepares non-noble metal nickel nanoparticles with good dispersion properties. The metal nickel nanoparticles are dispersed in the solution without agglomeration and sedimentation; then during the photocatalytic hydrogen production process, the dispersion liquid containing a certain amount of metal nickel nanoparticles is Add directly to the solution containing different photocatalysts (such as TiO 2 ,CdS,g‑C 3 N 4 ) in the hydrogen production solution, the photocatalytic hydrogen production reaction was realized and showed efficient photocatalytic hydrogen production performance. The invention has simple operation, wide applicability and good repeatability, and provides a reliable solution for reducing the cost of photocatalytic hydrogen production and the application of nickel in photocatalytic hydrogen production.

Description

technical field [0001] The invention belongs to the field of hydrogen energy preparation, and relates to the photocatalytic clean preparation technology of hydrogen energy, that is, the technology of simulating the use of solar energy to realize photocatalytic decomposition of water to produce hydrogen energy at low cost, and in particular to the construction of a photocatalytic system based on nickel nanoparticle co-catalyst method. Background technique [0002] The accelerated development of science, technology and industrialization in today's society has led to insufficient supply of conventional energy, which has continuously triggered energy crises, and the environmental pollution caused by the development and utilization of fossil energy has become more and more serious. In order to solve the two major problems of energy shortage and environmental pollution that threaten human survival and development, it has always been people's pursuit to find clean and non-polluting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J23/755B01J27/04B01J27/24C01B3/04
CPCC01B3/042B01J21/063B01J23/755B01J27/04B01J27/24C01B2203/1041C01B2203/1094B01J35/19B01J35/39B01J35/40Y02E60/36
Inventor 师进文程诚沈少华郭烈锦
Owner XI AN JIAOTONG UNIV
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