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Simple and convenient preparation method of irregular cobalt phosphide/cadmium sulfide nanorod composite catalyst

A technology of cadmium sulfide nanorods and composite catalysts, which is applied in the fields of material science and photocatalytic hydrogen production, can solve problems such as crises, and achieve the effects of cost reduction, high photocatalytic activity, and high hydrogen production rate

Inactive Publication Date: 2017-09-01
JIANGNAN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to create a simple method to prepare an amorphous cobalt phosphide / cadmium sulfide nanorod composite catalyst for the current problems of environmental pollution and energy crisis, so as to reduce the cost of photocatalyst and improve the hydrogen production rate of photocatalytic decomposition of water

Method used

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  • Simple and convenient preparation method of irregular cobalt phosphide/cadmium sulfide nanorod composite catalyst
  • Simple and convenient preparation method of irregular cobalt phosphide/cadmium sulfide nanorod composite catalyst
  • Simple and convenient preparation method of irregular cobalt phosphide/cadmium sulfide nanorod composite catalyst

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Embodiment 1

[0018] (1) Take 20.25mmol of cadmium chloride 2.5 hydrate, 40.75mmol of thiourea and 60mL of ethylenediamine in a 100mL high-pressure reactor, and place the reactor in a 160°C oven for hydrothermal treatment for 48 hours. After the reaction, remove the reactor Put it under natural conditions and drop to room temperature, filter to obtain a yellow solid, wash with deionized water 10 times, and wash with ethanol twice, and place the obtained solid in a 60°C oven to dry overnight, and the obtained yellow solid is cadmium sulfide nanorods;

[0019] (2) Take 50mg of cadmium sulfide nanorods and place them in a 25mL single-necked flask, then add 2mL of cobalt chloride aqueous solution (0.1M), 7mL of sodium hypophosphite (molecular formula NaH 2 PO 2 ) aqueous solution (0.1mol / L), 1mL deionized water, ultrasonic dispersion treatment for 1min, and then use nitrogen degassing for 40min to remove oxygen in the reaction system;

[0020] (3) After the degassing is completed, place the ro...

Embodiment 2

[0023] Take 3 mg of cadmium sulfide in Example 1 and place it in a 100 mL photocatalytic reactor, then add 5 mL of triethanolamine and 45 mL of water. Sonicate for 30s, use nitrogen degassing for 1h to remove oxygen in the system, place the round bottom flask under 300W xenon light (equipped with a 420nm cut-off filter) and irradiate, after the reaction is over, use thermal conductivity-gas chromatography to detect the generated in the reaction Hydrogen, the hydrogen production rate is 7.4mmol g after 8 hours of reaction -1 h -1 .

Embodiment 3

[0025] Co in embodiment 1 x 3 mg of the P-50 / CdS NRs composite catalyst was placed in a 100 mL photocatalytic reactor, and then 5 mL of triethanolamine and 45 mL of deionized water were added to the 100 mL photocatalytic reactor. Sonicate for 30s, use nitrogen degassing for 1h to remove oxygen in the system, place the round bottom flask under 300W xenon light (equipped with a 420nm cut-off filter) and irradiate, after the reaction is over, use thermal conductivity-gas chromatography to detect the generated in the reaction Hydrogen, the hydrogen production rate is 165.8mmol g after 8 hours of reaction -1 h -1 ,, 22 times higher hydrogen production rate than pure cadmium sulfide nanorods.

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Abstract

The invention aims to the problems such as environment pollution and energy crisis at present, and discloses a simple and convenient preparation method of an irregular cobalt phosphide / cadmium sulfide nanorod composite catalyst, and aims to reduce the cost of photocatalysts and increase velocity of hydrogen production by photocatalysis decomposition of water. The preparation method of the composite catalyst is green and environmental-friendly, and the prepared composite catalyst is relatively long in service life, and still has relatively high catalysis activity even after 25 hours. The irregular cobalt phosphide / cadmium sulfide nanorod composite catalyst prepared by using the method is simple and convenient in synthesis method, high in photocatalysis hydrogen production velocity, high in stability and low in price, is capable of greatly reducing the cost when being applied to industrial production, and is a novel catalysis material with relatively large industrial photocatalysis hydrogen production prospects.

Description

technical field [0001] The invention provides a simple preparation method of an amorphous cobalt phosphide / cadmium sulfide nanorod 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 developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185B01J27/04
CPCB01J27/04B01J27/1853B01J35/40B01J35/50
Inventor 董玉明孔令刚王光丽蒋平平张会珍
Owner JIANGNAN UNIV
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