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Simple and convenient preparation method for nickle/graphene-like carbon nitride compound composite catalyst

A technology of olefinic carbon nitrogen compounds and composite catalysts, applied in the field of photocatalytic hydrogen production and material science, can solve environmental pollution, crisis and other problems, achieve the effect of reducing cost, reducing use cost and improving catalytic efficiency

Inactive Publication Date: 2016-11-09
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the current problems of environmental pollution and energy crisis, and create a simple method to prepare a simple nickel / graphene-like carbon-nitrogen compound catalyst, thereby reducing the cost of photocatalysts and improving the hydrogen production rate of photocatalytic decomposition of water

Method used

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  • Simple and convenient preparation method for nickle/graphene-like carbon nitride compound composite catalyst
  • Simple and convenient preparation method for nickle/graphene-like carbon nitride compound composite catalyst
  • Simple and convenient preparation method for nickle/graphene-like carbon nitride compound composite catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0017] (1) Take 20g of thiourea and place it in 4 crucibles, place the crucibles in a muffle furnace and raise the temperature to 550°C at a rate of 2 degrees per minute, calcinate for two hours, take out the crucibles when the temperature drops to room temperature, and grind the solid into Powder, put the crucible containing the solid powder in a muffle furnace, raise the temperature to 500°C at a rate of 2°C per minute, calcinate for two hours, and take out the yellow-white solid powder after cooling down to room temperature to obtain graphene-like carbon nitrogen compounds;

[0018] (2) Get 10mg of graphene carbon nitrogen compound and place it in a 25mL single-necked flask, then add 3mL of triethanolamine, 0.3mL of nickel sulfide aqueous solution (0.1mol / L), 2.1mL of sodium hypophosphite (molecular formula NaH 2 PO 2 ) aqueous solution (0.1mol / L), 4.6mL water, ultrasonic dispersion treatment for 30s, and then use nitrogen degassing for 40min to remove oxygen in the reactio...

Embodiment 2

[0022] (1) 10 mg of graphene-like carbonitrides in Example 1 is placed in a 25 mL round-bottomed flask, then 3 mL of triethanolamine is added, 0.2 mL of nickel sulfide aqueous solution (0.1mol / L), 1.4 mL of sodium hypophosphite (molecular formula NaH 2 PO 2 ) aqueous solution (0.1mol / L), 5.4mL water, ultrasonic dispersion treatment for 30s, and then use nitrogen degassing for 40min to remove oxygen in the reaction system;

[0023] (2) After the degassing is completed, place the round-bottomed flask under a 300W xenon lamp for 30 minutes, then centrifuge the obtained solid, wash it with deionized water 5 times, wash it with ethanol twice, and dry the solid at 80°C for 10 hours under vacuum. The obtained black substance is nickel simple substance / graphene-like carbon-nitrogen compound composite catalyst. The mass percent content of nickel in the prepared nickel simple substance / graphene-like carbonitride compound catalyst is 3.8%.

Embodiment 3

[0025] (1) 10 mg of graphene-like carbonitrides in Example 1 is placed in a 25 mL round-bottomed flask, then 3 mL of triethanolamine is added, 0.4 mL of nickel sulfide aqueous solution (0.1mol / L), 2.8 mL of sodium hypophosphite (molecular formula NaH 2 PO 2 ) aqueous solution (0.1mol / L), 3.8mL water, ultrasonic dispersion treatment for 30s, and then use nitrogen degassing for 40min to remove oxygen in the reaction system;

[0026] (2) After the degassing is completed, place the round-bottomed flask under a 300W xenon lamp for 30 minutes, then centrifuge the obtained solid, wash it with deionized water 5 times, wash it with ethanol twice, and dry the solid at 80°C for 10 hours under vacuum. The obtained black substance is nickel simple substance / graphene-like carbon-nitrogen compound composite catalyst. The mass percent content of nickel in the prepared nickel simple substance / graphene-like carbonitride compound catalyst is 12.2%.

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Abstract

The invention aims to create a simple and convenient preparation method for a nickle / graphene-like carbon nitride compound composite catalyst for solving problems of environment pollution, energy crisis and the like at present, lowering the cost of a photocatalyst and increasing the rate of photocatalytic hydrogen production. The preparation method of the composite catalyst is green and environmental-friendly, the principle of the composite catalyst is that a graphene-like carbon nitride compound is taken as a photosensitizer, and the nickle monomer / graphene-like carbon nitride compound composite catalyst is prepared by reducing nickle ions by using a photo-reduction method. The nickle monomer / graphene-like carbon nitride compound composite catalyst provided by the invention is simple and convenient in synthesis method, high in photocatalysis hydrogen production rate, good in stability, low in price, non-toxic and environmental-friendly, and is a novel catalytic material with relatively large industrial photocatalysis hydrogen production prospects, and the cost can be greatly lowered if the catalyst is used in industrial production.

Description

technical field [0001] The invention proposes a simple method for preparing a metal nickel element / graphene-like carbon-nitrogen compound composite catalyst, which belongs to the field of material science and technology and the field of photocatalytic hydrogen production. Background technique [0002] Global environmental pollution and energy crisis are becoming more and more serious, and the development of new sustainable energy has attracted the attention of countries all over the world. Among them, hydrogen is considered to be the most ideal energy source because of its abundant sources, high combustion value, and clean and pollution-free combustion products. Hydrogen production by splitting water is one of the important methods to achieve large-scale production of hydrogen. Using solar energy to decompose water to produce hydrogen, and converting solar energy into chemical energy stored in hydrogen energy, provides a cheap and convenient way to obtain hydrogen. The dev...

Claims

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Application Information

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IPC IPC(8): B01J27/24C01B3/04
CPCC01B3/042B01J27/24C01B2203/1082C01B2203/1058B01J35/399B01J35/393B01J35/33B01J35/39Y02E60/36
Inventor 董玉明孔令刚王光丽蒋平平
Owner JIANGNAN UNIV
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