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Catalyst for generating hydrogen by visible light photocatalytic reduction of water, and preparation method thereof

A catalyst and water hydrogen production technology, applied in the field of solar hydrogen production, can solve the problems of economic security, national security risks, photocatalysts cannot be applied on a large scale, etc., and achieve the effect of high hydrogen production activity

Inactive Publication Date: 2011-05-04
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of precious metal resources such as Pt in my country, this means that photocatalysts loaded with Pt and other precious metals cannot be used on a large scale in my country, otherwise it will cause serious hidden dangers to my country's economic security and national security.

Method used

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  • Catalyst for generating hydrogen by visible light photocatalytic reduction of water, and preparation method thereof
  • Catalyst for generating hydrogen by visible light photocatalytic reduction of water, and preparation method thereof
  • Catalyst for generating hydrogen by visible light photocatalytic reduction of water, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 80mg carbon nanotubes, 0.6mL 0.1mol·L -1 Aqueous copper nitrate solution was added to a 100mL beaker and diluted with water to 20mL. After stirring at room temperature for 1 h, the water was evaporated to dryness to obtain a carbon nanotube-metal salt precursor.

[0026] The obtained precursor was put into a muffle furnace, and calcined at 300° C. for 3 h in an air atmosphere to obtain a carbon nanotube-copper oxide system. The standard X-ray diffraction XRD spectrum of CuO is as follows figure 1 Shown in (a); The XRD pattern of multi-walled carbon nanotubes is as figure 1 Shown in (b); The XRD spectrum of carbon nanotube-copper oxide system is as figure 1 (c) shown. in addition, figure 2 A transmission electron microscope TEM photo showing a carbon nanotube-copper oxide system; image 3 The X-ray photoelectron spectroscopy XPS spectrum of the carbon nanotube-copper oxide system is shown.

[0027] Put 60mg carbon nanotube-copper oxide system into the solution of...

Embodiment 2

[0029] 85mg carbon nanotubes, 0.4mL 0.1mol·L -1 Aqueous copper nitrate solution was added to a 100mL beaker and diluted with water to 20mL. After stirring at room temperature for 1 h, the water was evaporated to dryness to obtain a carbon nanotube-metal salt precursor. (II) The obtained precursor was put into a muffle furnace, and calcined at 300° C. for 3 hours in an air atmosphere to obtain a carbon nanotube-copper oxide system. (III) Put the above-mentioned carbon nanotube-copper oxide system into the solution of 10mL eosin Y (1mg / mL), in N 2 Soak for 30 minutes under protection to obtain eosin Y, carbon nanotubes and copper oxide catalyst.

Embodiment 3

[0031] 35mg carbon nanotubes, 0.4mL 0.1mol·L -1 Aqueous copper nitrate solution was added to a 100mL beaker and diluted with water to 20mL. After stirring at room temperature for 1 h, the water was evaporated to dryness to obtain a carbon nanotube-metal salt precursor. (II) The obtained precursor was put into a muffle furnace, and calcined at 300° C. for 3 hours in an air atmosphere to obtain a carbon nanotube-copper oxide system. (III) Put the above-mentioned carbon nanotube-copper oxide system into the solution of 60mL eosin Y (1mg / mL), in N 2 Soak for 30 minutes under protection to obtain eosin Y, carbon nanotubes and copper oxide catalyst.

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Abstract

The invention provides a catalyst for generating hydrogen by visible light photocatalytic reduction of water, and a preparation method thereof, wherein each 100mg of the catalysts contain 10-60mg of eosin-Y, 35-85mg of carbon nano tubes and 1-10mg of oxides. With the technical scheme of the invention, the eosin is used as a sensitizing agent, the carbon nano tubes are used as carriers and photogenerated electron channels, the oxides, such as copper oxide, are used as co-catalysts, so that hydrogen generation by visible light photocatalytic reduction of water is implemented. The catalyst has higher hydrogen generation activity under irradiation of the visible light, and can be used for generating hydrogen by visible light photocatalytic reduction of water. And the oxides substitute Pt to be used as the co-catalyst, thereby implementing non-platinum property of the catalyst.

Description

technical field [0001] The invention relates to the field of solar hydrogen production, in particular to a catalyst for visible light catalytic reduction of water to produce hydrogen and a preparation method thereof. Background technique [0002] At present, the resources on the earth can no longer meet people's needs for a long time, and the use of fossil fuels has caused great environmental pollution. Solar energy and hydrogen energy are considered to be the most effective ways to solve the above problems. The instability of solar energy supply has greatly restricted its direct utilization. If solar energy can be used to produce hydrogen and converted into hydrogen energy, the instability of solar energy can be overcome. Such a solar-hydrogen energy system will be one of the effective ways to solve energy utilization and ecological environment problems in the future. [0003] The research on solar hydrogen production methods mainly focuses on four aspects: direct therma...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/745B01J23/755C01B3/04
CPCY02E60/36
Inventor 张静赵雪伶康诗钊李向清穆劲
Owner EAST CHINA UNIV OF SCI & TECH
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