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Preparation method of metal organic framework film modified by chlorophyll b and application thereof to photocatalytic reduction carbon dioxide

A metal-organic framework and chlorophyll technology, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve the problems of limited development and application, cumbersome operation, and pollution, and achieve high light energy utilization rate, high photocatalytic efficiency, The effect of low energy consumption

Inactive Publication Date: 2017-07-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is often a complex organic synthesis reaction, with cumbersome operations, high energy consumption, and pollution, which limit its development and application.

Method used

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  • Preparation method of metal organic framework film modified by chlorophyll b and application thereof to photocatalytic reduction carbon dioxide
  • Preparation method of metal organic framework film modified by chlorophyll b and application thereof to photocatalytic reduction carbon dioxide
  • Preparation method of metal organic framework film modified by chlorophyll b and application thereof to photocatalytic reduction carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Mix 30ml copper hydroxide nanowire solution with 1ml 1mg / L chlorophyll b solution, stir magnetically for 5min, and vacuum filter directly on the anodized aluminum porous membrane to form a composite membrane of nanowire and chlorophyll b, anodize The aluminum porous membrane has a diameter of 2.5 cm, a pore diameter of 200 nm, and a porosity of 50%. ;

[0034] 2) Put the composite film of nanowires and chlorophyll b into 10ml, 10mM trimesic acid solution (the volume of ethanol and water is 1:1), and react at room temperature for 2 hours. After the reaction, wash 3 times with the mixed solvent of the same ratio to obtain the HKUST-1 film modified by chlorophyll b (molecular formula is Cu 3 (BTC) 2 ·3H 2 O), see figure 2 . figure 2 The chlorophyll b-modified HKUST-1 film shown is a polycrystalline film with good grain intergrowth and continuous film without cracks.

Embodiment 2

[0036] 1) Mix 30ml of copper hydroxide nanowire solution with 1ml of 10mg / L chlorophyll b solution, stir magnetically for 5min, and vacuum filter directly on the anodized aluminum porous membrane to form a composite membrane of nanowire and chlorophyll b, anodize The aluminum porous membrane has a diameter of 2.5 cm, a pore diameter of 200 nm, and a porosity of 50%. ;

[0037]2) Put the composite film of nanowires and chlorophyll b into 10ml, 10mM trimesic acid solution (the volume of ethanol and water is 1:1), and react at room temperature for 2 hours. After the reaction, wash 3 times with the mixed solvent of the same ratio to obtain the HKUST-1 film modified by chlorophyll b (molecular formula is Cu 3 (BTC) 2 ·3H 2 O), see image 3 . image 3 The chlorophyll b-modified HKUST-1 film shown is a polycrystalline film with good grain intergrowth and continuous film without cracks.

Embodiment 3

[0039] 1) Mix 30ml copper hydroxide nanowire solution with 1ml 100mg / L chlorophyll b solution, stir magnetically for 5min, and vacuum filter directly on the anodized aluminum porous membrane to form a composite membrane of nanowire and chlorophyll b, anodize The aluminum porous membrane has a diameter of 2.5 cm, a pore diameter of 200 nm, and a porosity of 50%. ;

[0040] 2) Put the composite film of nanowires and chlorophyll b into 10ml, 10mM trimesic acid solution (the volume of ethanol and water is 1:1), and react at room temperature for 2 hours. After the reaction, wash 3 times with the mixed solvent of the same ratio to obtain the HKUST-1 film modified by chlorophyll b (molecular formula is Cu 3 (BTC) 2 ·3H 2 O), see Figure 4 . Figure 4 The chlorophyll b-modified HKUST-1 film shown is a polycrystalline film with good grain intergrowth and continuous film without cracks.

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Abstract

The invention discloses a preparation method of a metal organic framework film modified by chlorophyll b and application thereof to photocatalytic reduction carbon dioxide. The method comprises the following steps of (1) preparing a hydroxide nanowire solution; then, mixing the prepared hydroxide nanowire solution with the chlorophyll b solution; uniformly stirring the mixture; performing vacuum suction filtering to obtain a composite film of the hydroxide nanowire and the chlorophyll b; (2) dissolving organic ligands into a mixed solution of ethyl alcohol and water to obtain an organic ligand solution; putting the composite film of the hydroxide nanowire and the chlorophyll b into the organic ligand solution; performing room temperature reaction for 2 to 24 hours; then, obtaining the metal organic framework film modified by the chlorophyll b. The goals of mixing the chlorophyll b with the nanowire through physical stirring and static absorption and introducing the chlorophyll b to the inside of the metal organic framework film in situ are realized so as to realize the functionalization; the advantages of low energy consumption, no pollution, high speed and high efficiency are achieved.

Description

technical field [0001] The invention relates to a preparation method of a metal organic framework film, in particular to a metal organic framework film modified by chlorophyll b and its application in photocatalytic reduction of carbon dioxide. Background technique [0002] Metal-organic framework film is a porous functional film with a thickness ranging from nanometers to micrometers and attached to a substrate. Ideally, a metal-organic framework film has a smooth, isotropic surface, high porosity and good chemical stability. It can be used in many fields such as separation, adsorption, catalysis, drug sustained release carrier, hydrogen storage, etc. [0003] Dense continuous MOF thin films can be used in the field of photocatalysis. If the micropores of the metal organic framework film are modified, it can be endowed with new characteristics, and chlorophyll b is introduced into the micropores, so that it can realize the conversion of carbon dioxide and light energy unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/82B01D69/12B01D67/00B01D53/86B01D53/62
CPCB01D53/007B01D53/62B01D53/86B01D67/0006B01D69/12B01D71/82B01D2255/802Y02A50/20
Inventor 彭新生郭弈张诗韵
Owner ZHEJIANG UNIV
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