Bi-functional mixed type polyacid-base composite material, method for preparing same and application of bi-functional mixed type polyacid-base composite material

A composite material and functional technology, applied in the field of photocatalytic materials, to achieve the effects of stable three-dimensional structure, cheap and easy-to-obtain synthetic raw materials, and good application value

Active Publication Date: 2019-01-04
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, according to the literature survey, there is no report

Method used

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  • Bi-functional mixed type polyacid-base composite material, method for preparing same and application of bi-functional mixed type polyacid-base composite material
  • Bi-functional mixed type polyacid-base composite material, method for preparing same and application of bi-functional mixed type polyacid-base composite material
  • Bi-functional mixed type polyacid-base composite material, method for preparing same and application of bi-functional mixed type polyacid-base composite material

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preparation example Construction

[0036] Another aspect of the embodiment of the present invention also provides the bifunctional hybrid polyacid-based composite material and its preparation method, which includes: adding polymetallic acid with a molar ratio of 2:40:1 to 2:40:3 Oxygenate, copper salt and TPB ligand are fully mixed in a solvent, and then solidified at 110-130°C for 48-72 hours to obtain dark green blocky crystals, which are the bifunctional mixed polyacid complex Material.

[0037] Further, the copper salt includes copper chloride dihydrate, but is not limited thereto.

[0038] Further, the solvent includes any one or a combination of two or more of DMF, acetonitrile and methanol, but is not limited thereto.

[0039] Further, the polyoxometalates include (TBA) 4 [W 10 o 32 ], but not limited to this.

[0040] In some specific embodiments, the preparation method includes: combining copper salt, TPB ligand and polyoxometalate (TBA) 4 [W 10 o 32 ] mixed evenly to obtain the mixture, and th...

Embodiment 1

[0051] Example 1: Preparation of bifunctional hybrid polyacid-based composite material

[0052] Will (TBA) 4 [W 10 o 32 ] (33.2mg, 0.01mmol), CuCl 2 2H 2O (34.1mg, 0.20mmol) and TPB (2.5mg, 0.005mmol) were added to a mixture of N,N-dimethylformamide (DMF, 2.0mL), acetonitrile (4.0mL) and methanol (0.25mL) For stirring, use 1.0mol·L –1 HCl adjusted the pH of the system to 2.3, stirred at room temperature for 30 minutes, then added the above suspension into a 25mL polytetrafluoroethylene reactor, baked at 120°C for 72 hours, and finally cooled to room temperature to obtain dark green Blocky crystals were washed 3 times with DMF and dried at room temperature. The yield was about 56%.

Embodiment 2

[0053] Example 2: Preparation of bifunctional hybrid polyacid-based composite material

[0054] Will (TBA) 4 [W 10 o 32 ] (33.2mg, 0.01mmol), CuCl 2 2H 2 O (34.1mg, 0.20mmol) and TPB (7.5mg, 0.015mmol) were added to a mixture of N,N-dimethylformamide (DMF, 1.0mL), acetonitrile (4.0mL) and methanol (0.5mL) For stirring, use 1.5mol·L –1 HCl adjusted the pH of the system to 2.1, stirred at room temperature for 40 minutes, then added the above suspension into a 25mL polytetrafluoroethylene reactor, baked at 110°C for 60 hours, and finally cooled to room temperature to obtain dark green Blocky crystals were washed 3 times with DMF and dried at room temperature. The yield was about 53%.

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Abstract

The invention discloses a bi-functional mixed type polyacid-base composite material, a method for preparing the same and application of the bi-functional mixed type polyacid-base composite material. Achemical formula of the bi-functional mixed type polyacid-base composite material is H<48>[Cu<24>(mu<3>-Cl)<8>(mu<4>-Cl)<6>](TPB)<24>[Cu<II>(CH<3>OH)]<6>[W<12>O<40>]<8>[W<6>O<19>]<3>. The bi-functional mixed type polyacid-base composite material is crystallized in cubic crystal systems, space groups are Pm-3m, and crystal cell parameters are shown. The bi-functional mixed type polyacid-base composite material, the method and the application have the advantages that the bi-functional mixed type polyacid-base composite material has bi-functional catalytic performance, water not only can be photocatalytically decomposed by the bi-functional mixed type polyacid-base composite material to produce hydrogen, but also can be photocatalytically decomposed by the bi-functional mixed type polyacid-base composite material to produce oxygen, processes for preparing the bi-functional mixed type polyacid-base composite material are simple, reaction conditions are mild, the bi-functional mixed type polyacid-base composite material is easy to prepare by the aid of the method on a large scale, and the bi-functional mixed type polyacid-base composite material and the method have excellent application values in the aspects of photocatalytically reducing the water into the hydrogen and photocatalytically oxidizing the water into oxygen.

Description

technical field [0001] The invention relates to a bifunctional mixed polyacid-based composite material and its preparation method and application, belonging to the technical field of photocatalytic materials. Background technique [0002] Under the dual pressure of energy crisis and environmental pollution, people urgently need to develop sustainable clean energy materials to solve the fuel problem. Photocatalytic water splitting technology provides an environmentally friendly and excellent method for preparing clean energy materials. Water splitting is composed of two half-reactions of water reduction to hydrogen and water oxidation to oxygen. Metal-organic frameworks, as an emerging class of porous materials, provide a versatile research platform for the design and preparation of water-splitting materials through the purposeful selection of bridging ligands and metal nodes. Compared with photocatalytic water splitting for hydrogen production, there are few examples of ph...

Claims

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Application Information

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IPC IPC(8): B01J31/22C01B3/04C01B13/02
CPCB01J31/1691B01J31/1815B01J35/004C01B3/042C01B13/0207Y02E60/36
Inventor 史岽瑛刘春森杜淼郑锐户敏
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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