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Preparation method and application of porphyrin-metal organic framework material

A technology of metal-organic framework and porphyrin, which is applied in the field of preparation of porphyrin-metal-organic framework materials, can solve the problems of low transfer rate and separation efficiency of photogenerated carriers, and low photocatalytic efficiency

Active Publication Date: 2020-10-23
CHONGQING TECH & BUSINESS UNIV +1
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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problems of photogenerated carriers when noble metal nanoparticles are used as the cocatalyst of MOF in the prior art. The problem of low photocatalytic efficiency caused by low transfer rate and separation efficiency provides a preparation method and application of porphyrin-metal organic framework material

Method used

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  • Preparation method and application of porphyrin-metal organic framework material
  • Preparation method and application of porphyrin-metal organic framework material
  • Preparation method and application of porphyrin-metal organic framework material

Examples

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Embodiment 1

[0031] (1) Preparation of Pt-TCPP

[0032] 1) see figure 1 , 6.9 g of methyl 4-formylbenzoate was completely dissolved in 100 mL of propionic acid, 3 mL of pyrrole was added dropwise, and the mixture was refluxed for 12 h. After the reaction, the mixture was cooled to room temperature, and the precipitate was obtained by suction filtration. , the collected precipitate was washed with ethyl acetate and THF and dried at 70°C for 12 h to obtain a purple powder, which was TMCPP;

[0033] 2) Add 452mg of PtCl 2 and 724mg TMCPP were added to 100mL benzonitrile, and at 190°C and N 2 Reflux overnight under air. After cooling, the solvent was spin-dried, and the resulting residue was purified by column chromatography to obtain PtTMCPP. The obtained solid was added to 20 mL, 2 mol / L KOH aqueous solution and THF / MeOH 1:1 mixed solution and refluxed for 12 h. After cooling to room temperature, part of the solvent was removed, and the solution was acidified with 1M HCl until no more p...

Embodiment 2-5

[0040] In Example 2-5, the same method as in Example 1 was used to prepare the porphyrin-metal organic framework material, wherein the ingredients and ratios in Example 2-5 are shown in Table 1.

[0041] Ingredient list in table 1 embodiment 2-6

[0042]

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Abstract

The invention discloses a preparation method and application of a porphyrin-metal organic framework material. The preparation method of the porphyrin-metal organic framework material comprises the following steps: dissolving a mixture of Ti (OBu) 4, Pt-TCPP and benzoic acid into DEF, and stirring for 20-35 minutes at room temperature; heating the mixture at 100-150 DEG C for 5-7 days, centrifugingthe obtained product, washing with acetone for 3 times, and drying at 35-50 DEG C in vacuum for 5-8 hours; and reducing the dried solid for 2-5 h at the temperature of 200-240 DEG C under hydrogen, and obtaining the porphyrin-metal organic framework material. According to the porphyrin-metal organic framework material prepared by the method, the distance from a photo-generated charge carrier to areaction center can be shortened, the photo-generated electron transfer and separation speed is increased, photocatalytic hydrogen production can be promoted, and the hydrogen production rate is as high as 32332.8 [mu] mol g <-1 > h <-1 >.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a preparation method and application of a porphyrin-metal organic framework material. Background technique [0002] Metal-organic frameworks (MOFs) are a new class of porous inorganic-organic hybrid supramolecular materials with flexible structure and functional tunability, making them ideal photocatalysts. In MOFs, photoinduced electrons from photosensitive organic linkers rapidly migrate to metal nodes serving as reaction centers, thereby effectively facilitating the separation of charge carriers. In addition, the large specific surface area and well-organized porous structure enable MOFs to incorporate a large number of reaction sites, facilitating the photocatalytic hydrogen generation. [0003] A variety of MOFs have been developed as photocatalysts, but even with noble metal (e.g., Pt, Au, etc.) nanoparticles as cocatalysts, they only show limited photocatalytic activity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/16C01B3/04
CPCB01J31/1691C01B3/042C01B2203/0277C01B2203/1041B01J35/39Y02E60/36
Inventor 刘兴燕冯欢谭宇陈铭祚徐永港谭祥国
Owner CHONGQING TECH & BUSINESS UNIV
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