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Preparation method of H-TiO2/CdS/Cu(2-x)S nanoribbon

A nanobelt, H2SO4 technology, applied in chemical instruments and methods, hydrogen production, hydrogen/syngas production, etc., can solve the problems of high cost and low conversion rate of catalyst to solar energy, etc., to reduce reaction cost and increase conversion and utilization. efficiency, good reusability

Active Publication Date: 2017-05-10
HARBIN INST OF TECH
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  • Description
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  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of low conversion rate of solar energy and high cost of existing catalysts, and provides a kind of H-TiO 2 / CdS / Cu 2-x Preparation method of S nanobelt

Method used

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  • Preparation method of H-TiO2/CdS/Cu(2-x)S nanoribbon
  • Preparation method of H-TiO2/CdS/Cu(2-x)S nanoribbon
  • Preparation method of H-TiO2/CdS/Cu(2-x)S nanoribbon

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specific Embodiment approach 1

[0026] Specific embodiment one: H-TiO of this embodiment 2 / CdS / Cu 2-x The preparation method of S nanoribbon, carries out as follows:

[0027] 1. Disperse nano-titanium dioxide in NaOH solution, transfer it to a polytetrafluoroethylene reactor after ultrasonication, and keep it at 160-180°C for 48-60h; after cooling to room temperature, Na 2 Ti 3 o 7 powder; Na 2 Ti 3 o 7 The powder was washed with deionized water, then added to the HCl solution and stirred for 24h to 48h, after being washed with deionized water, the obtained H 2 Ti 3 o 7 white powder with H 2 SO 4 Put the solution together into a polytetrafluoroethylene reaction kettle and keep it at 80-100°C for 12-24 hours; finally, after cleaning and drying the obtained product with deionized water and absolute ethanol, put it in a muffle furnace at 400-600 Calcined at ℃ for 2-6 hours to obtain TiO with rough surface 2 nanobelt;

[0028] Two, the rough surface TiO obtained in step one2 In the atmosphere of th...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of the NaOH solution in step 1 is 5-10 mol / L; other aspects are the same as Embodiment 1.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the concentration of the HCl solution in Step 1 is 0.1-0.5 mol / L; other aspects are the same as Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a preparation method of an H-TiO2 / CdS / Cu(2-x)S nanoribbon, relates to a preparation method of a semiconductor composite and aims to solve the technical problems that existing catalysts have lower solar energy conversion rate and higher cost. The method comprises steps as follows: firstly, a TiO2 nanoribbon is subjected to acid corrosion and reducing atmosphere treatment, and an H-TiO2 nanoribbon with a rough surface is obtained; CdS nanoparticles are modified on the surface of the H-TiO2 nanoribbon with a chemical deposition method, and an H-TiO2 / CdS nanocomposite is obtained; finally, part of Cd<2+> is reduced with Cu<+> with an ion exchange method, and an H-TiO2 / CdS / Cu(2-x)S nanoribbon catalyst is obtained. The catalyst has good light response to visible light and near infrared areas and can be used in a reaction for producing hydrogen from water through photolysis.

Description

technical field [0001] The invention relates to a preparation method of a semiconductor composite material. Background technique [0002] With the continuous development of society, fossil fuels formed in prehistoric times and bred for hundreds of years, such as coal, natural gas and oil, which play an important role in human life, are constantly decreasing and are even on the verge of exhaustion. At the same time, during the combustion and use of these fossil fuels, a lot of air pollutants such as nitrogen oxides, sulfur oxides, and carbon oxides will be released, which will change the global climate and seriously affect human health. Therefore, finding renewable and clean energy has become an urgent task and mission in the world today. A large amount of hydrogen is produced by photocatalytic water splitting. In this catalytic process, only the conversion between protons, energy and water is involved, and no by-products and pollutants are produced. Therefore, the photocat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C01B3/04
CPCC01B3/042B01J27/04C01B2203/1005C01B2203/1076B01J35/50B01J35/39Y02E60/36Y02P20/133
Inventor 徐平楚家玉韩喜江张彬杜耘辰
Owner HARBIN INST OF TECH
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