Metal-plant polyphenol complex crystal material and preparation method

A technology of plant polyphenols and crystal materials, applied in the field of advanced materials, can solve the problems of amorphous framework, irregular shape, difficult to effectively control the assembly process of plant polyphenols and metal ions, etc., to achieve easy-to-obtain sources and simple synthesis steps , the effect of good application prospects

Inactive Publication Date: 2019-01-18
XI AN JIAOTONG UNIV
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Problems solved by technology

However, because plant polyphenols are easily oxidized by air, and the assembly process of plant polyphenols and metal ions is difficult to e

Method used

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  • Metal-plant polyphenol complex crystal material and preparation method
  • Metal-plant polyphenol complex crystal material and preparation method
  • Metal-plant polyphenol complex crystal material and preparation method

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preparation example Construction

[0031] The preparation method of the metal-plant polyphenol complex crystal disclosed by the invention comprises the following steps:

[0032] (1) Dissolve the polyether block copolymer (such as F127) in a certain volume of water / alcohol mixed solvent, then add a certain amount of alkali (such as ammonia water), stir well and then add polyphenol compound, until the polyphenol is completely After dissolution to obtain a clear solution, stirring was continued at room temperature for a period of time (2-24 hours).

[0033] (2) Add a certain amount of metal ion solution (such as copper nitrate aqueous solution) to the above solution, continue to stir for 2 to 24 hours, transfer the product to a hydrothermal kettle for 12 to 24 hours, and the hydrothermal temperature is 50-130 ℃. Then the product is collected by centrifugation and dried to obtain metal-plant polyphenol complex crystals.

Embodiment 1

[0035] (1) Dissolve 0.20g block copolymer F127 in 37mL H 2 O and 8 mL of absolute ethanol, after stirring evenly, add 0.4 mL of ammonia water, and continue stirring for about 1 h. Then add 0.20g of tannic acid and stir for 24 hours after the dissolution is complete.

[0036] (2) Add 2 mL of freshly prepared metal ion solution to the above solution, and continue stirring for 24 h. The solution containing metal ions was freshly prepared Cu(NO 3 ) 2 solution, Zn(NO 3 ) 2 , Ni(NO 3 ) 2 or Co(NO 3 ) 2 solution, please refer to Table 1 for the specific dosage:

[0037] Table 1. Preparation of fusiform metal-plant polyphenol complex crystals

[0038]

[0039] (3) The above product was transferred to a 100mL reactor, placed in an oven and heated at 100°C for 24 hours, and then centrifuged to collect the hydrothermal product to obtain the crystals of the fusiform metal-plant polyphenol complex.

[0040] The results of the corresponding products in Table 1 are shown in fi...

Embodiment 2

[0042] (1) Dissolve 0.20g block copolymer F127 in 37mL H 2 O and 8mL of absolute ethanol, after stirring evenly, add 0.3-0.8mL of ammonia water, and continue stirring for about 1h. Then add 0.20g of tannic acid and stir for 24 hours after the dissolution is complete.

[0043] (2) Add 2 mL of freshly prepared metal ion solution to the above solution, and continue stirring for 24 h. The metal ion solution was freshly prepared Cu(NO 3 ) 2 . Please refer to Table 2 for the specific dosage:

[0044] Table 2. Preparation of metal-plant polyphenol complex crystals with different morphologies

[0045] metal precursor

[0046] (3) The above product was transferred to a 100mL reactor, placed in an oven and heated at 100°C for 24 hours, and then the hydrothermal product was collected by centrifugation to obtain metal-plant polyphenol complex crystals with different shapes. The results of the corresponding products in Table 2 are shown in image 3 shown in each figure. F...

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Abstract

The invention discloses a metal-plant polyphenol complex crystal material and a preparation method and belongs to the technical field of advanced materials. The preparation method comprises the step of adopting metal ions for crosslinking plant polyphenol, thereby forming a metal-polyphenol complex crystal, wherein morphology (such as shuttle shape and sea urchin shape) of the metal-polyphenol complex crystal is regulated by regulating volume of ammonium hydroxide, and the components of the metal-polyphenol complex crystal are controlled by adding different metal precursors. The plant polyphenol adopted by the method has the characteristics of low cost, non-toxicity, easiness in acquiring raw materials, and the like; the plant polyphenol is a reproducible precursor; the synthesis step of the metal-polyphenol complex crystal is simple; the preparation method is high in universality and is easy for large-scale preparation.

Description

technical field [0001] The invention belongs to the technical field of advanced materials, and relates to a metal-plant polyphenol complex crystal material and a preparation method. Background technique [0002] Plant polyphenols (such as tannic acid), which widely exist in fruits and vegetables, are cheap, non-toxic and easy-to-scale biomass. Due to the strong complexation ability of plant polyphenols to metals, various metal-polyphenol complexes can be formed. [0003] Metal-polyphenol complexes, as a new class of metal-organic coordination polymers, have been widely used in the modification and coating of different materials and biological interfaces, and have applications in drug delivery, catalysis, live cell imaging, energy storage and Transformation and other fields show good application prospects. However, because plant polyphenols are easily oxidized by air, and the assembly process of plant polyphenols and metal ions is difficult to effectively control, the curre...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 魏晶黄横波王根秦婧赵永席
Owner XI AN JIAOTONG UNIV
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