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Iron-carbon composite material with visible light photolysis of water and hydrogen production performance and preparation method

A composite material, a technology for photolysis of water, which is applied in the research field of new clean energy production and utilization, and achieves the effects of simple and easy preparation method, easy acquisition, and reduced preparation cost.

Active Publication Date: 2020-01-31
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, iron is added as a doping element to the metal oxide catalyst to improve the catalytic effect of the catalyst. There are few reports on the combination of elemental iron and carbon materials to produce hydrogen by photocatalytic decomposition of water.

Method used

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  • Iron-carbon composite material with visible light photolysis of water and hydrogen production performance and preparation method
  • Iron-carbon composite material with visible light photolysis of water and hydrogen production performance and preparation method
  • Iron-carbon composite material with visible light photolysis of water and hydrogen production performance and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Prepare 500 mL of ferric nitrate solution with a concentration of 0.1 mol / L, cut 50 g of cleaned Flammulina velutipes into pieces and soak in it for 10 hours. After soaking, the Flammulina velutipes was filtered and taken out, dried in an oven for 5 hours, and then transferred to a vacuum tube furnace for calcination in a nitrogen atmosphere. The temperature was raised to 800°C and kept for 3 hours, and finally a black iron-carbon composite material was obtained. Its morphology is as figure 1 and figure 2 shown.

[0044] Use a xenon lamp as the light source to test the hydrogen production of the prepared iron-carbon composite material: take 20 mg of the prepared iron-carbon composite material and place it in a 20 mL quartz bottle, add 10 mL of secondary water, ultrasonically disperse it, and place the reaction bottle in an XPA-7 type The photocatalytic reaction was carried out in the photocatalytic reaction apparatus, stirred, irradiated by 1000W Xe lamp for 8h, and ...

Embodiment 2

[0046] Prepare 500 mL of ferric nitrate solution with a concentration of 0.2 mol / L, cut 50 g of cleaned Flammulina velutipes into pieces and soak in it for 5 hours. After soaking, the Flammulina velutipes was filtered and taken out, dried in an oven for 5 hours, and then transferred to a vacuum tube furnace for calcination in a nitrogen atmosphere. The temperature was raised to 700°C and kept for 5 hours, and finally a black iron-carbon composite material was obtained.

Embodiment 3

[0048] Prepare 500 mL of ferric nitrate solution with a concentration of 0.4 mol / L, cut 50 g of cleaned Flammulina velutipes into pieces and soak in it for 2 hours. After soaking, the Flammulina velutipes was filtered and taken out, dried in an oven for 5 hours, and then transferred to a vacuum tube furnace for calcination in a nitrogen atmosphere, heated to 600°C, kept for 7 hours, and finally a black iron-carbon composite material was obtained.

[0049] The iron-carbon composite materials prepared in Examples 2-3 were characterized as in Example 1, and the characterization results were similar to those in Example 1.

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Abstract

The invention discloses an iron-carbon composite material with visible light photolysis of water for hydrogen production and a preparation method thereof. Edible fungi are used as carriers, iron ions are loaded into the edible fungi to obtain iron-ion-loaded edible fungi, and iron-ion-loaded edible fungi are obtained. Edible fungi reduce iron ions to zero-valent iron through one-step high-temperature decomposition and carbonization reduction to obtain composite materials of porous carbon materials loaded with iron nanoparticles and iron-carbon composite materials. Under light conditions, the material can react with water to produce hydrogen, and the carbon carrier can significantly promote the hydrogen production process.

Description

technical field [0001] The invention belongs to the field of research on the production and utilization of new clean energy, and relates to an iron-carbon composite material with visible light photolysis water hydrogen production performance and a preparation method thereof. Background technique [0002] Since 1972, Japanese scientists Honda and Fujishima first discovered TiO 2 Semiconductor material with photocatalytic water splitting to generate H 2 and O 2 Semiconductor materials with good photoelectric response characteristics have been widely used in the field of solar chemical conversion and storage research. However, due to the band structure and carrier transport performance of semiconductor materials, the improvement of photocatalytic efficiency in the field of photocatalytic research is limited. Especially for semiconductor materials with poor conductivity, even under the condition of light excitation, the number of electrons that can move freely is small, and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/22C25B1/04C25B11/06
CPCC25B1/04C25B11/04B01J27/22B01J35/39Y02E60/36
Inventor 唐波崔官伟杨秀丽王文范雅琪张雨佳
Owner SHANDONG NORMAL UNIV