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Preparation method of a three-dimensional hollow nickel selenium sulfide nanoframe catalyst

A three-dimensional hollow, nickel sulfide technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of DSSCs short circuit, poor adhesion, etc. The effect of small size, good stability and excellent electrocatalytic performance

Inactive Publication Date: 2020-03-10
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, carbon materials have excellent catalytic activity and corrosion resistance, but their poor adhesion on FTO glass will cause short circuits in DSSCs

Method used

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  • Preparation method of a three-dimensional hollow nickel selenium sulfide nanoframe catalyst
  • Preparation method of a three-dimensional hollow nickel selenium sulfide nanoframe catalyst
  • Preparation method of a three-dimensional hollow nickel selenium sulfide nanoframe catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Disperse 3 mmol cobalt nitrate hexahydrate and 4.5 mmol sodium citrate dihydrate in 100 mL deionized water to form component A, and disperse 2 mmol potassium cobaltcyanide in 100 mL deionized water to form component B. Component B and component B were mixed and stirred for 1 min, then allowed to stand for 18 h, and dried by centrifugation to obtain blue Ni-Co PBA. Disperse 50 mg of Ni-Co PBA and 250 mg of sodium sulfide nonahydrate in 30 mL of absolute ethanol and 10 mL of deionized water with magnetic stirring, respectively. After mixing, continue to stir for 15 min, and seal them in a 100 mL polytetrafluoroethylene-lined container. In a high-pressure reactor, the solvothermal reaction was carried out at 120 °C for 6 h, and the three-dimensional hollow nickel sulfide nanoframes were obtained by centrifugal drying. Then 15 mg of the above-mentioned nickel sulfide nanoframes and 30 mg of selenium powder were magnetically stirred and dispersed in 50 mL of deionized water,...

Embodiment 2

[0027]Disperse 3 mmol cobalt nitrate hexahydrate and 4.5 mmol sodium citrate dihydrate in 100 mL deionized water to form component A, and disperse 2 mmol potassium cobaltcyanide in 100 mL deionized water to form component B. Component B and component B were mixed and stirred for 1 min, then allowed to stand for 18 h, and dried by centrifugation to obtain blue Ni-Co PBA. Disperse 50 mg of Ni-Co PBA and 250 mg of sodium sulfide nonahydrate in 30 mL of absolute ethanol and 10 mL of deionized water with magnetic stirring, respectively. After mixing, continue to stir for 15 min, and seal them in a 100 mL polytetrafluoroethylene-lined container. In a high-pressure reactor, solvothermal reaction was carried out at 140 °C for 6 h, and the three-dimensional hollow nickel sulfide nanoframes were obtained by centrifugal drying. Then 15 mg of the above-mentioned nickel sulfide nanoframes and 30 mg of selenium powder were magnetically stirred and dispersed in 50 mL of deionized water, and ...

Embodiment 3

[0029] Disperse 3 mmol cobalt nitrate hexahydrate and 4.5 mmol sodium citrate dihydrate in 100 mL deionized water to form component A, and disperse 2 mmol potassium cobaltcyanide in 100 mL deionized water to form component B. Component B and component B were mixed and stirred for 1 min, then allowed to stand for 18 h, and dried by centrifugation to obtain blue Ni-Co PBA. Disperse 50 mg of Ni-Co PBA and 250 mg of sodium sulfide nonahydrate in 30 mL of absolute ethanol and 10 mL of deionized water with magnetic stirring, respectively. After mixing, continue to stir for 15 min, and seal them in a 100 mL polytetrafluoroethylene-lined container. In a high-pressure reactor, solvothermal reaction was carried out at 160 °C for 6 h, and the three-dimensional hollow nickel sulfide nanoframes were obtained by centrifugal drying. Then 15 mg of the above-mentioned nickel sulfide nanoframes and 30 mg of selenium powder were magnetically stirred and dispersed in 50 mL of deionized water, and...

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Abstract

The invention discloses a preparation method of a three-dimensional hollow selenium nickel sulfide nano-frame catalyst. The nickel-cobalt Prussian blue nano-cube and the sodium sulfide nonahydrate aredispersed in the solvent, and the nickel sulfide nano-frame is obtained through solvothermal reaction; and then the obtained nickel sulfide nano-frame and the selenium powder are dispersed in the solvent, and a certain amount of hydrazine hydrate is added so that the three-dimensional hollow selenium nickel sulfide nano-frame catalyst is prepared through secondary solvothermal reaction. The method is easy to operate and low in cost, and the prepared selenium nickel sulfide nano-frame catalyst has excellent electrochemical performance and the advantages of small nanoparticle size, high specific surface area and stable structure. The selenium nickel sulfide nano-frame catalyst is used as the counter electrode of the dye-sensitized solar cell and the photoelectric conversion efficiency can be 9.66%.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a preparation method of a three-dimensional hollow nickel selenium sulfide nano-frame catalyst. Background technique [0002] Fossil energy includes coal, oil, and natural gas. As the world's main primary energy, it occupies a large proportion in my country's energy structure. However, fossil energy reserves are limited and non-renewable, and various ecological and environmental problems will be caused during the combustion process, so it is urgent to find an alternative clean energy. A range of renewable energy sources such as wind, geothermal, biomass and solar power are good options. Among them, solar energy has the advantages of safety, pollution-free and unlimited supply, making the utilization of solar energy one of the current research hotspots. [0003] In 1991, Swiss scientist Grätzel reported a new type of solar cell called dye-sensitized solar cells (D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/0224B01J23/755
CPCB01J23/755H01L31/0224H01L31/18Y02P70/50
Inventor 钱兴吴伟敏刘宏宇
Owner FUZHOU UNIV
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