Preparation method and application of carbon quantum dot/metal organic skeleton catalyst

A metal-organic framework, carbon quantum dot technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, catalytic reactions, etc., can solve problems such as low activity, and achieve a simple synthesis process, Highly maneuverable, easy-to-adjust effects

Active Publication Date: 2018-03-06
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
5 Cites 21 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] To solve the current photocatalytic reduction of CO by single metal organic framework 2 For the problem of low activity, we combined the amidated me...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

The invention belongs to the field of new energy resources and particularly relates to a method for compounding a carbon quantum dot with a metal organic skeleton material. A catalyst prepared by virtue of the method is applied to the reduction preparation of CO through photocatalysis of CO2. For solving the problem that the activity of CO2 obtained through photocatalytic reduction of a single metal organic skeleton at present is low, an aminated metal organic skeleton material and the carbon quantum dot with carboxylic acid are combined to obtain a catalyst, and the obtained catalyst is usedfor preparing CO from CO2 through high-efficiency photocatalytic reduction. The catalyst can simultaneously have the advantages of the metal organic skeleton and the carbon quantum dot and further hasvery high photocatalytic reaction activity due to the synergistic effect of the metal organic skeleton and the carbon quantum dot. The constitution components of the catalyst are easily adjusted, andthe metal organic skeleton material with amino and the carbon quantum dot with carboxylic acid can be arbitrarily selected. The method is simple in synthesis process flow and strong in operability and has wide application prospects.

Application Domain

Technology Topic

Metal-organic frameworkPhotocatalytic reaction +7

Image

  • Preparation method and application of carbon quantum dot/metal organic skeleton catalyst
  • Preparation method and application of carbon quantum dot/metal organic skeleton catalyst
  • Preparation method and application of carbon quantum dot/metal organic skeleton catalyst

Examples

  • Experimental program(3)

Example Embodiment

[0024] Example 1:
[0025] (1) Preparation of carbon quantum dots:
[0026] Add 500 mL of deionized water to a 500 mL beaker, put two graphene electrodes into the above beaker with a distance of 7 cm, and apply 30V direct current. After two weeks of electrolysis, the clear and colorless water becomes a black aqueous solution. After filtering the black aqueous solution with filter paper, it was centrifuged at a speed of 20,000 rpm for one hour, and the supernatant was taken. The supernatant is dried by rotary evaporation to obtain the required carbon quantum dots.
[0027] (2) Preparation of aqueous solution of carbon quantum dots:
[0028] Take 25 mg of carbon quantum dots and add 5 mL of water to obtain a 0.5 mg/mL solution.
[0029] (3) Catalyst NH 2 -Preparation of MIL-88(Fe):
[0030] 0.32 g of surfactant F127 was dissolved in 26.7 mL of deionized water, and 3.3 mL of 0.4 M ferric chloride aqueous solution was added to the above solution, and stirred for 1.5 hours. Then 0.6 mL of acetic acid was added and stirred again for 1.5 hours. 120mg of 2-NH 2 -BDC was added to the above solution and stirred for 2 hours. Put the above mixed solution into the autoclave, put it into the oven, keep at 110 degrees Celsius for 24 hours, wash the obtained product with ethanol 6 times to obtain NH 2 -MIL-88(Fe).
[0031] (4) Catalyst carbon quantum dots/NH 2 -Preparation of MIL-88(Fe):
[0032] Will NH 2 -MIL-88(Fe) (50mg) and 0.5mg/mL (2mL) carbon quantum dot aqueous solution were mixed, stirred overnight, centrifuged, washed with ethanol three times, and dried to obtain carbon quantum dots/NH 2 -MIL-88(Fe).
[0033] Using field emission scanning electron microscopy technology to analyze the catalyst NH 2 -MIL-88(Fe) morphology characterization. Characterized by transmission electron microscopy that carbon quantum dots have been successfully loaded on NH 2 -MIL-88(Fe) surface.

Example Embodiment

[0034] Example 2:
[0035] NH 2 -MIL-88(Fe) catalyst photocatalytic reduction of CO 2 Performance evaluation: take 10mg NH 2 -MIL-88(Fe) catalyst is uniformly dispersed on the quartz filter membrane, placed in a solid-gas photocatalytic reaction device, and 2mL of a mixture of acetonitrile and triethanolamine (the volume ratio of acetonitrile to triethanolamine is 4:1) Vacuum and charge CO 2 After that, the reaction was allowed to equilibrate in a dark environment for 1 hour. Subsequently, the reaction device was placed under a 300W visible light lamp, and the CO concentration was measured every two hours.

Example Embodiment

[0036] Example 3:
[0037] Carbon quantum dot/NH 2 -MIL-88(Fe) photocatalytic reduction of CO 2 Performance evaluation: take 10mg carbon quantum dots/NH 2 -MIL-88(Fe) catalyst is uniformly dispersed on the quartz filter membrane, placed in a solid-gas photocatalytic reaction device, and 2mL of a mixture of acetonitrile and triethanolamine (the volume ratio of acetonitrile to triethanolamine is 4:1) Vacuum and charge CO 2 After that, the reaction was allowed to equilibrate in a dark environment for 1 hour. Subsequently, the reaction device was placed under a 300W visible light lamp, and the CO concentration was measured every two hours.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Heterojunction photocatalyst and preparation method thereof

PendingCN113289665AImprove photocatalytic reactivityFacilitates separation and transferPhysical/chemical process catalystsHydrogen productionPhoto catalysisHydrogen production
Owner:HUAIBEI NORMAL UNIVERSITY

Joint simulator testing machine

Owner:HOWMEDICA OSTEONICS CORP

Quick release vise

InactiveUS7036807B1Easy to adjustVicesClampsEngineeringFast release
Owner:INDAL TECH

Classification and recommendation of technical efficacy words

Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products