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CdS/Cu2S/Co-based photoelectric catalytic material and preparation method thereof

A photoelectric catalysis and co-catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, electrodes, etc., can solve the problems of low reserves, high cost, restricting large-scale practical application, etc., and achieve simple preparation process and stable improvement. The effect of stable, efficient and stable photoelectric catalytic water splitting performance

Active Publication Date: 2018-11-30
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Noble metals are one of the more efficient co-catalyst materials for photocatalytic water splitting. However, noble metal materials have disadvantages such as low reserves and high cost, which largely restrict their large-scale practical application. Non-precious metal cocatalysts are extremely important

Method used

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  • CdS/Cu2S/Co-based photoelectric catalytic material and preparation method thereof
  • CdS/Cu2S/Co-based photoelectric catalytic material and preparation method thereof
  • CdS/Cu2S/Co-based photoelectric catalytic material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0054] A commercial 10 mm × 25 mm FTO conductive glass substrate was placed in piranha washing solution (98% H 2 SO 4 :30%H 2 o 2 =3:1) for 3 hours, ultrasonically washed with ultrapure water for 10 minutes, and dried in a drying oven.

[0055] Weigh 0.1603 grams of cadmium sulfate (3CdSO 4 ·8H 2 O), 0.8373 grams of thiourea (SC (NH 2 ) 2 ) into a 150 milliliter beaker, then add 50 milliliters of ultrapure water, stir for 5 minutes to dissolve the above-mentioned medicine completely, then add 8.5 milliliters of ammonia water, seal and continue to stir for 90 seconds. Quickly pour the above solution into a 100ml wide-mouth reagent bottle;

[0056] A 10 mm × 25 mm FTO conductive glass substrate is suspended and immersed in the solution of the above-mentioned wide-mouth reagent bottle with a thin wire, and the immersion area is 1 square centimeter, and the bottle mouth is sealed. Put it into a water bath and start heating. After the temperature of the water bath rises to ...

Embodiment 2

[0069] Place a commercial 20 mm × 30 mm FTO conductive glass substrate in piranha wash solution (98% H 2 SO 4 :30%H 2 o 2 =3:1) for 3 hours, ultrasonically washed with ultrapure water for 15 minutes, and dried in a vacuum oven.

[0070] Weigh 0.3207 grams of cadmium sulfate (3CdSO 4 .8H 2 O), 1.6746 grams of thiourea (SC (NH 2 ) 2 ) into a 250 milliliter beaker, then add 100 milliliters of ultrapure water, stir for 5 minutes to dissolve the above-mentioned medicines completely, then add 17 milliliters of ammonia water, seal, and continue to stir for 90 seconds. Quickly pour the above solution into a 200ml wide-mouth reagent bottle;

[0071] A 20 mm × 30 mm FTO conductive glass substrate is suspended and immersed in the solution of the above-mentioned wide-mouth reagent bottle with a thin wire, and the bottle mouth is sealed. Put it in a water bath and start heating. After the temperature of the water bath rises to 60°C, keep it at 60°C for 30 minutes; during this proce...

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Abstract

The invention provides a CdS / Cu2S / Co-based photoelectrocatalytic material, comprising a substrate. The substrate is loaded with CdS, Cu2S and Co based cocatalysts, wherein CdS and Cu2S are compoundedto form a CdS / Cu2S heterojunction. The prepared novel visible-light-responsive CdS / Cu2S / Co-based photocatalytic material solves the problem of severe photo-corrosion of CdS, overcomes the problem of proneness of photo-generated electrons and holes to compounding, is greatly improved in photoelectrocatalytic activity and electrode stability, realizes high-efficiency stable photocatalytic decomposition of water, and has the characteristics of stable structure, high photocatalytic performance, etc. The results of photoelectric tests show that the photocurrent of a CdS / Cu2S / Co-Pi membrane electrode prepared in the invention is improved by 6 times compared with the photocurrent of a pure CdS membrane electrode.

Description

technical field [0001] The invention relates to the field of photoelectrocatalytic energy conversion, in particular to a CdS / Cu 2 S / Co-based photoelectrocatalytic material and preparation method thereof. Background technique [0002] In recent years, problems such as energy shortage and environmental pollution have aroused people's widespread concern. Finding and developing low-cost clean energy and effective environmental protection technology has become an important issue for the sustainable development of human beings. Semiconductor photocatalytic technology can convert low-density solar energy into high-density chemical energy, including splitting water to produce hydrogen, reducing carbon dioxide, degrading and mineralizing various organic pollutants in water and air, etc. This technology has the advantages of reaction at room temperature, direct use of solar energy, and no secondary pollution. It has immeasurable significance for fundamentally solving the problems of ...

Claims

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Application Information

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IPC IPC(8): B01J27/049C25B1/04C25B11/06
CPCC25B1/04B01J27/049C25B1/55C25B11/091B01J35/33B01J35/39Y02E60/36
Inventor 宋治敏孙松李士阔鲍骏徐法强高琛
Owner UNIV OF SCI & TECH OF CHINA
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