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Graphite type carbon nitride-metal organic frame composite photocatalyst as well as preparation method and application of graphite type carbon nitride-metal organic frame composite photocatalyst

A graphite-type carbon nitride and metal organic framework technology, applied in the field of photocatalysis, can solve the problems of easy recombination and small specific surface area of ​​the catalyst, and achieve the effects of low preparation cost, high visible light catalytic activity, and improved quantum yield

Active Publication Date: 2015-06-24
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the specific surface area of ​​the catalyst is small, and the photogenerated electron-hole pairs are easy to recombine, which is the key to prevent the graphitic carbon nitride from being practically applied.

Method used

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  • Graphite type carbon nitride-metal organic frame composite photocatalyst as well as preparation method and application of graphite type carbon nitride-metal organic frame composite photocatalyst
  • Graphite type carbon nitride-metal organic frame composite photocatalyst as well as preparation method and application of graphite type carbon nitride-metal organic frame composite photocatalyst
  • Graphite type carbon nitride-metal organic frame composite photocatalyst as well as preparation method and application of graphite type carbon nitride-metal organic frame composite photocatalyst

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Effect test

Embodiment 1

[0034] A graphite carbon nitride-metal organic framework composite photocatalyst of the present invention uses graphite carbon nitride as a carrier, MIL-125 (Ti) particles grow freely on the surface of graphite carbon nitride, MIL-125 (Ti) Carbon nitride nanosheets are loaded on the particle surface.

[0035] Its preparation method specifically comprises the following steps:

[0036] (1) Take 50 mg of block graphite carbon nitride and add it to 36 mL of dimethylformamide, and ultrasonically disperse for 2 hours to obtain a graphite carbon nitride dispersion.

[0037] (2) Add 2.4 mL of n-butyl titanate, 4 mL of methanol and 2.2 g of terephthalic acid to the carbon nitride dispersion prepared in step (1) and stir to obtain a mixed solution.

[0038] (3) Transfer the mixed solution prepared in step (2) to a polytetrafluoroethylene-lined reactor, seal it, and react at 150°C for 48 hours. Naturally cooled to room temperature to obtain a pale yellow precipitate.

[0039] (4) The ...

Embodiment 2

[0043] A graphite-type carbon nitride-metal organic framework composite photocatalyst of the present invention uses graphite-type carbon nitride as a carrier, MIL-125 (Ti) particles grow freely on the surface of the graphite-type carbon nitride, MIL-125 ( Ti) particles are loaded with carbon nitride nanosheets on the surface.

[0044] Its preparation method specifically comprises the following steps:

[0045] (1) Add 11.5 mg of block graphite carbon nitride into 36 mL of dimethylformamide, and disperse ultrasonically for 2 hours to obtain a graphite carbon nitride dispersion.

[0046] (2) Add 2.4 mL of n-butyl titanate, 4 mL of methanol and 2.2 g of terephthalic acid to the carbon nitride dispersion prepared in step (1) and stir to obtain a mixed solution.

[0047] (3) Transfer the mixed solution prepared in step (2) to a polytetrafluoroethylene-lined reactor, seal it, and react at 150°C for 48 hours. Naturally cooled to room temperature to obtain a pale yellow precipitate.

...

Embodiment 3

[0050] A graphite-type carbon nitride-metal organic framework composite photocatalyst of the present invention uses graphite-type carbon nitride as a carrier, MIL-125 (Ti) particles grow freely on the surface of the graphite-type carbon nitride, MIL-125 ( Ti) particles are loaded with carbon nitride nanosheets on the surface.

[0051] Its preparation method specifically comprises the following steps:

[0052] (1) Take 200 mg of block graphite carbon nitride and add it to 36 mL of dimethylformamide, and ultrasonically disperse for 2 hours to obtain a graphite carbon nitride dispersion.

[0053] (2) Add 2.4 mL of n-butyl titanate, 4 mL of methanol and 2.2 g of terephthalic acid to the carbon nitride dispersion prepared in step (1) and stir to obtain a mixed solution.

[0054] (3) Transfer the mixed solution prepared in step (2) to a polytetrafluoroethylene-lined reactor, seal it, and react at 150°C for 48 hours. Naturally cooled to room temperature to obtain a pale yellow prec...

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Abstract

The invention discloses a graphite type carbon nitride-metal organic frame composite photocatalyst as well as a preparation method and application of the graphite type carbon nitride-metal organic frame composite photocatalyst. Graphite type carbon nitride acts as a carrier of the graphite type carbon nitride-metal organic frame composite photocatalyst; metal organic framework particles freely grow on the surface of graphite type carbon nitride, and the surfaces of the metal organic framework particles are loaded with carbon nitride nano sheets. The preparation method comprises the following steps: carrying out ultrasonic dispersion on graphite type carbon nitride into dimethylformamide so as to obtain a graphite type carbon nitride dispersion solution; stirring and mixing a carbon nitride dispersion solution, tetrabutyl titanate, methyl alcohol and an organic solvent so as to obtain a mixed solution; heating and reacting the mixed solution in a seal environment so as to obtain the graphite type carbon nitride-metal organic frame composite photocatalyst. The graphite type carbon nitride-metal organic frame composite photocatalyst can remove dye in waste water, and has the advantages of simplicity, high efficiency, environment friendliness, economic property, environment protection and the like.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a graphite-type carbon nitride-metal organic framework composite photocatalyst and a preparation method and application thereof. Background technique [0002] With the development of modern industry, energy resources are gradually reduced or even exhausted, and environmental pollution is becoming more and more serious. Energy shortage and environmental degradation are the major problems faced by human beings in the 21st century and need to be solved urgently. Therefore, the development and utilization of renewable new energy and the control and control of environmental pollution are of great significance to the development of the national economy and the realization of sustainable development strategies. Photocatalytic technology refers to the conversion of light energy in sunlight into chemical energy at room temperature, which has the advantages of low cost and no pollu...

Claims

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Application Information

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IPC IPC(8): B01J31/22A62D3/17A62D101/28
Inventor 袁兴中王侯吴艳陈晓红蒋谦王惠蒋龙波曾光明
Owner HUNAN UNIV
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