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Metal-organic framework nanosheets, its preparation method and its application in efficient photocatalytic reduction of carbon dioxide

A technology of metal-organic frameworks and nanosheets, which is applied in the direction of catalytic reactions, carbon monoxide, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problems of low conversion efficiency and obstacles to practical applications, and achieve simple and efficient preparation methods. Conducive to photocatalytic reduction and high efficiency

Active Publication Date: 2021-12-10
UNIV OF SCI & TECH OF CHINA
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, many photocatalytic materials have been applied in the photocatalytic reduction of CO 2 However, the extremely low conversion efficiency seriously hinders its practical application

Method used

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  • Metal-organic framework nanosheets, its preparation method and its application in efficient photocatalytic reduction of carbon dioxide
  • Metal-organic framework nanosheets, its preparation method and its application in efficient photocatalytic reduction of carbon dioxide
  • Metal-organic framework nanosheets, its preparation method and its application in efficient photocatalytic reduction of carbon dioxide

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preparation example Construction

[0032] The present invention provides a method for preparing a metal organic framework nanosheet comprising: S) in a protective atmosphere, to N, N- dimethylformamide, ethanol, water, an organic ligand, the three-soluble copper salt ethylamine mixing, then reacted at ultrasound, to obtain a metal-organic framework nanosheet.

[0033] Wherein the present invention is not particularly limited to the source of all raw materials, it can be commercially available.

[0034]In the protective atmosphere, N, N-dimethylformamide, anhydrous ethanol, water, organic ligand, soluble copper salt and triethylamine were mixed; the protective atmosphere is the protection atmosphere of the branches of those skilled in the art However, there is no particular limitation, preferably nitrogen in the present invention; the water is preferably distilled water; the N, N-dimethylformamide, anhydrous ethanol, water to triethylamine can preferably be (30) ~ 40): (1 ~ 3): (0.6 ~ 1): (0.6 ~ 1), more preferably ...

Embodiment 1

[0046] 35ml N, N-dimethylformamide (National Pharmaceutical Group Chemical Reagent Co., Ltd., purity ≥99%), 2ml anhydrous ethanol (National Medicine Group Chemical Reagent Co., Ltd., purity ≥99%) and 0.8ml deionized water The sealed round bottom flask, nitrogen gas protection, 300r / min for 5 minutes in the electrothermal sleeve mixer (Shanghai Mei Yingpu Instrumentation Co., Ltd. 08-2T), 125 mg of terephthalic acid was added to the mixed solution, Stir until all of terephthalic acid is dissolved. The addition of 180 mg of three-water-neutrocyanitrate copper (National Medicine Group Chemical Reagent Co., Ltd., purity ≥99%) continued to stir until the system is completely clarified to clarify the blue solution. At this time, 0.8 ml of triethylamine (National Pharmaceutical Group Chemical Reagent Co., Ltd., purity ≥99%), continued 300r / min for 0.5 h, and stirred at 100 R / min for 4 h. The sealed device is then transferred to an ultrasound 8h (ultrasonic power 150W). After the re...

Embodiment 2

[0049] 35ml N, N-dimethylformamide (National Medicine Group Chemical Reagent Co., Ltd., purity ≥99%), 3ML no-water ethanol (National Medicine Group Chemical Reagent Co., Ltd. The sealed round bottom flask, nitrogen gas protection, 300r / min for 5 minutes in the electrothermal sleeve mixer (Shanghai Mei Yingpu Instrumentation Co., Ltd. 08-2T), 125 mg of terephthalic acid was added to the mixed solution, Stir until all of terephthalic acid is dissolved. The addition of 180 mg of three-water-neutrocyanitrate copper (National Medicine Group Chemical Reagent Co., Ltd., purity ≥99%) continued to stir until the system is completely clarified to clarify the blue solution. At this time, 0.8 ml of triethylamine (National Pharmaceutical Group Chemical Reagent Co., Ltd., purity ≥99%), continued 300r / min for 0.5 h, and stirred at 100 R / min for 4 h. The sealed device is then transferred to an ultrasound 8h (ultrasonic power 150W). After the reaction was completed, the solid product was sep...

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Abstract

The invention provides a method for preparing metal-organic framework nanosheets, comprising: S) in a protective atmosphere, N,N-dimethylformamide, absolute ethanol, water, an organic ligand, a soluble copper salt and three The ethylamine is mixed and stirred, and then reacted under the condition of ultrasound to obtain the metal-organic framework nanosheet. Compared with the prior art, the preparation method of the present invention is simple, does not require a complex environment, and can be prepared at normal temperature and pressure, and the prepared metal-organic framework nanosheets are atomic-level thickness, resulting in many uncoordinated surface atoms, It has more reactant adsorption active sites, which is beneficial to the photocatalytic reduction of carbon dioxide, so it has higher efficiency and higher stability as a carbon dioxide photocatalytic reduction catalyst, which is closer to the actual application situation and conforms to the concept of sustainable development.

Description

Technical field [0001] The present invention belongs to the technical field of catalyst, particularly to a metal-organic framework nanosheet, preparation method thereof and the photocatalytic efficiency in reducing CO 2 Application. Background technique [0002] Today the excessive burning of fossil fuels releases large amounts of CO 2 , And CO 2 Such excessive accumulation of greenhouse gases increased the lead to global warming and rising sea levels caused by melting glaciers and other environmental issues. These environmental pollution and energy shortage problem has greatly hindered the sustainable development of human society, therefore, how to effectively alleviate or even solve the status quo has become a worldwide problem and challenge. However, CO 2 Also a potential resource of carbon, if the CO 2 Converted to carbon-based energy, will hopefully while addressing energy shortage and environmental degradation, and therefore how to promote CO 2 Generating a carbon-based ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C01B32/40
CPCB01J31/1691B01J31/223B01J35/004C01B32/40B01J2231/62
Inventor 孙永福祖小龙谢毅
Owner UNIV OF SCI & TECH OF CHINA
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