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A kind of multi-component composite photocatalyst and its preparation method and application

A composite light and catalyst technology, applied in separation methods, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc., can solve the problems of poor controllability of active particle size, easy aggregation of active components, and low utilization of light energy. , to achieve the effect of improving performance and applicability, small particle size, and high utilization of light energy

Active Publication Date: 2018-08-07
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional supported catalysts still have problems such as poor controllability of active particle size, easy agglomeration of active components, narrow photoresponse window, and low utilization rate of light energy.

Method used

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  • A kind of multi-component composite photocatalyst and its preparation method and application
  • A kind of multi-component composite photocatalyst and its preparation method and application
  • A kind of multi-component composite photocatalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method and application of a multi-component composite photocatalyst, comprising the following steps:

[0018] (1) 1 g of terephthalic acid was dissolved in 40 mL of N,N-dimethylformamide, and a clear solution was obtained after stirring at room temperature for 10 min.

[0019] (2) Add 0.8g Bi(NO 3 ) 3 ·5H 2 O, stirred at room temperature for 20 min to obtain a mixed solution for subsequent use.

[0020] (3) Put 8 g of glass fibers into the mixed solution described in step (2) and soak at a constant temperature of 100° C. for 2 hours to obtain MOFs / glass fibers for later use.

[0021] (4) Dissolve 30 mL of tetrabutyl titanate in 15 mL of absolute ethanol and stir for 15 min. Put the treated MOFs / glass fiber material obtained in step (3) into the tetrabutyl titanate solution, carry out loading, and set aside. The above treatment method is to wash the MOFs / glass fiber material with ethanol, methanol or N,N-dimethylformamide, then wash with distilled wate...

Embodiment 2

[0028] A preparation method and application of a multi-component composite photocatalyst, comprising the following steps:

[0029] (1) Dissolve 0.5g of terephthalic acid in 25mL of N,N-dimethylformamide, stir at room temperature for 15min to obtain a clear solution, and set aside.

[0030] (2) Add 0.35g Zn(NO 3 ) 2 ·6H 2 O, stirred at room temperature for 15 min to obtain a mixed solution for subsequent use.

[0031] (3) Put 8 g of glass fibers into the mixed solution described in step (2) and soak at a constant temperature of 120° C. for 2 hours to obtain MOFs / glass fibers for later use.

[0032] (4) Dissolve 30 mL of tetrabutyl titanate in 15 mL of absolute ethanol, and stir for 10 min. Put the treated MOFs / glass fiber material obtained in step (3) into tetrabutyl titanate for loading, and set aside. The above treatment method is to wash the MOFs / glass fiber material with ethanol, methanol or N,N-dimethylformamide, then wash with distilled water or deionized water and d...

Embodiment 3

[0036] A preparation method of a multi-component composite photocatalyst, comprising the following steps:

[0037] (1) Dissolve 0.8g of terephthalic acid in 30mL of N,N-dimethylformamide, stir at room temperature for 13min to obtain a clear solution, and set aside.

[0038] (2) Add 0.35g Zn(NO 3 ) 2 ·6H 2 O, stirred at room temperature for 15 min to obtain a mixed solution for subsequent use.

[0039] (3) Put 8 g of glass fibers into the mixed solution described in step (2) and soak at a constant temperature of 120° C. for 2 hours to obtain MOFs / glass fibers for later use.

[0040] (4) 35g Bi(NO 3 ) 3 ·5H 2O was dissolved in 15 mL of absolute ethanol and stirred for 13 min. Put the treated MOFs / glass fiber material obtained in step (3) into a bismuth nitrate solution for loading, and set aside. The above treatment method is to wash the MOFs / glass fiber material with ethanol, methanol or N,N-dimethylformamide, then wash with distilled water or deionized water and dry at...

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Abstract

A multi-component composite photocatalyst and its preparation method and application, including the following steps: take organic ligand A and dissolve it in solution B to obtain a clear solution for later use; add metal compound C to the clear solution to obtain a mixed Solution, set aside; put the carrier into the mixed solution to obtain MOFs / carrier material, set aside; dissolve the metal compound D in the organic solvent, and then put the treated MOFs / carrier material into it for loading, set aside; put the prepared The materials are aged, then dried, and calcined for 3 to 5 hours to obtain a composite photocatalyst. The multi-component composite photocatalyst of the present invention has the advantages of small active component particle size, high loading capacity, uniform distribution, wide light response window (ultraviolet-visible light), and high light energy utilization efficiency, and realizes synergistic catalysis of multiple metal oxides. The performance and applicability of the photocatalyst are significantly improved, and it is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of photocatalysis used in the environment, in particular to a multi-component composite photocatalyst and its preparation method and application. Background technique [0002] In the 1990s, the international community began to try to use photocatalysis to remove organic waste gas. Photocatalytic oxidation technology has the advantages of fast and efficient reaction, thorough decomposition of pollutants and environmental friendliness. However, traditional supported catalysts still have problems such as poor controllability of active particle size, easy agglomeration of active components, narrow photoresponse window, and low utilization rate of light energy. [0003] Metal-organic frameworks (MOFs) materials are a kind of porous crystalline materials with periodic multi-dimensional network structure generated by hybridization of metal ions / clusters and organic ligands through self-assembly process. The surface area, p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/18B01J23/06B01D53/86B01D53/72
CPCB01D53/72B01D53/8668B01J23/002B01J23/06B01J23/18B01D2257/7027B01D2257/704B01J2523/00B01J35/39B01J2523/47B01J2523/54B01J2523/41B01J2523/31B01J2523/23B01J2523/305B01J2523/22B01J2523/12B01J2523/27
Inventor 陈英文黄超邓磊沈树宝祝社民
Owner NANJING TECH UNIV
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