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A kind of multilevel titanium dopamine composite material and its preparation method and application

A technology for titanium dopamine and composite materials, applied in the field of multi-level titanium dopamine composite materials and their preparation, can solve the problems of performance attenuation, poor conductivity, complicated preparation methods, etc., and solves the problems of poor conductivity, which is beneficial to industrial-scale production and preparation process. Simple, efficient and safe

Active Publication Date: 2022-06-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned technical deficiencies, the present invention provides a multi-level titanium-dopamine composite material and its preparation method and application. The present invention provides a synthesis strategy that uses dopamine self-assembly to induce metal ion coordination reactions to achieve Preparation of titanium-based nanomaterials with stable structure and excellent energy storage properties; the body is: coupling dopamine with titanium source, and adjusting the ratio of deionized water and acetone to achieve effective regulation of different surface structures that can be formed by nanospheres, At the same time, other transition source metals are introduced to obtain multi-level titanium-dopamine hybrid nanospheres with various shapes and compositions, and the synergistic effect between the titanium source and other transition source metals is used to enhance the conductivity and properties of the nanospheres. Chemical stability, which solves the defects of poor electrical conductivity, serious performance attenuation, agglomeration and crushing of nanocrystals during the preparation process, and complicated preparation methods of existing titanium-based nanomaterials, which are not suitable for most titanium-based composite materials. The problem

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  • A kind of multilevel titanium dopamine composite material and its preparation method and application
  • A kind of multilevel titanium dopamine composite material and its preparation method and application
  • A kind of multilevel titanium dopamine composite material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0039] A preparation method of a multi-level titanium dopamine composite material, comprising the following steps:

[0040] (1) Weigh 20 mg of dopamine and dissolve in 5 mL of deionized water to obtain solution A; 20 mg of titanocene dichloride is dissolved in 8 mL of acetone to obtain solution B; after solution A and solution B are mixed uniformly, 5 mg of ammonium molybdate and 40 mg of tris(hydroxymethyl)aminomethane was continuously stirred for 12 h to obtain an orange turbid liquid;

[0041] (2) centrifugal treatment is carried out subsequently, the centrifugal speed is 8000-10000r.p.m, and the time is 5-7min; then wash with ethanol 1-3 times (acetone can be dissolved in organic solvents such as ethanol, so it will not introduce a variety of solvents), Dry in an oven at 60 °C for 2 h to obtain an orange molybdenum-dopamine composite material.

Embodiment 2

[0043] A preparation method of a multi-stage titanium dopamine composite material, the difference from Embodiment 1 is that a molybdenum source is replaced with a tungsten source, comprising the following steps:

[0044] (1) Weigh 20 mg of dopamine and dissolve in 5 mL of deionized water to obtain solution A; 20 mg of titanocene dichloride is dissolved in 8 mL of acetone to obtain solution B; after solution A and solution B are mixed uniformly, 15 mg of sodium tungstate and 40 mg of tris(hydroxymethyl)aminomethane was continuously stirred for 12 h to obtain a brownish-yellow turbid liquid;

[0045] (2) Carry out centrifugal treatment subsequently, the centrifugal speed is 8000-10000r.p.m, the time is 5-7min, then wash with ethanol 1-3 times (acetone can be dissolved in organic solvents such as ethanol, so a variety of solvents will not be introduced), Then, it was dried in an oven at 60°C for 2 hours to obtain a brown-yellow tungsten-dopamine composite material.

Embodiment 3

[0047] A preparation method of a multi-stage titanium dopamine composite material, the difference from Example 2 is that the tungsten source is replaced by sodium tungstate with phosphotungstic acid, comprising the following steps:

[0048] (1) Weigh 20 mg of dopamine and dissolve in 5 mL of deionized water to obtain solution A; 20 mg of titanocene dichloride is dissolved in 8 mL of acetone to obtain solution B; after solution A and solution B are mixed uniformly, 15 mg of phosphotungstic acid is added, Add 40 mg of tris(hydroxymethyl)aminomethane, and continue stirring for 12h;

[0049] (2) centrifugal treatment is carried out subsequently, the centrifugal speed is 8000-10000r.p.m, and the time is 5-7min; then wash with ethanol 1-3 times (acetone can be dissolved in organic solvents such as ethanol, so it will not introduce a variety of solvents), Then, it was dried in an oven at 60°C for 2 hours to obtain a tungsten-titanium dopamine hybrid material.

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Abstract

The present invention relates to the technical field of organic-inorganic hybrid materials, in particular to a multi-level titanium-dopamine composite material and its preparation method and application. The transition metal ions and the carbon matrix are arranged orderly on the surface of the nanometer microsphere, and the metal ion containing titanium source is distributed on the surface and inside of the nanometer microsphere. In this method, dopamine is coupled with a titanium source, the ratio of deionized water and acetone is adjusted, and other transition source metals are introduced at the same time to obtain multi-level titanium-based composite nanospheres with various shapes and compositions. Other transition source metals produce synergistic effects to enhance the structural and chemical stability of the nanospheres. The method of the invention obtains solid titanium-based composite nano microspheres through one-step stirring and dissolving, and the preparation process is simple, efficient and safe, increases the practicability and universality of the reaction, and is beneficial to industrial scale production.

Description

technical field [0001] The invention relates to the technical field of organic-inorganic hybrid materials, in particular to a multi-level titanium dopamine composite material and a preparation method and application thereof. Background technique [0002] Organic-inorganic hybrid materials have the advantages of structure, composition, and morphology tunability, low cost, and biocompatibility, and have a wide range of applications in electrocatalysis, energy, and optoelectronics. In organic-inorganic hybrid materials, components of different scales and characteristics are combined into complex and diverse composite materials, which can be used as precursors of high-performance materials, and then after subsequent processing to obtain new high-performance materials, or directly as catalysts Achieve precise regulation of active sites. Therefore, designing and preparing new organic-inorganic hybrid materials, and studying the laws of their structure and properties changes, can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C01G23/047C01B19/00C01B32/05C01G31/02C01G39/06B82Y30/00B82Y40/00
CPCC08G73/0672C01G23/047C01B32/05C01B19/007C01G39/06C01G31/02B82Y30/00B82Y40/00
Inventor 杨勇秦依钒朱芷霄赵泽军
Owner NORTHWESTERN POLYTECHNICAL UNIV
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