Noble-metal nanoparticle-loading metal-organic framework, preparation method and application

A technology of metal-organic frameworks and nanoparticles, which is applied in the direction of analysis, measuring devices, and instruments through chemical reactions of materials, can solve the problems that electrodes cannot be reused, the operation process is complicated, and there is no load, so as to improve the electrical conductivity. Poor, rapid preparation process, effect of increasing dispersion performance

Inactive Publication Date: 2018-01-19
BEIJING CENT FOR PHYSICAL & CHEM ANALYSIS
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Problems solved by technology

[0007] Chinese patent (CN201610179629.6) discloses the application of metal-organic framework UiO-66 in the detection of protein kinase activity in photoelectric sensors. Coupling the electrode after alkylation to obtain an electrode modified by kemptide, and then dropwise adding UiO-66 loaded with a photoresponsive substance to obtain a photoelectric biosensor, and then use the photoelectric biosensor to detect the activity of protein kinase. The present invention

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  • Noble-metal nanoparticle-loading metal-organic framework, preparation method and application
  • Noble-metal nanoparticle-loading metal-organic framework, preparation method and application
  • Noble-metal nanoparticle-loading metal-organic framework, preparation method and application

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[0078] The invention provides a preparation method of a metal-organic framework composite material loaded with two or more noble metal nanoparticles, which is to first synthesize a metal-organic framework loaded with one or two kinds of noble metal nanoparticles, and then synthesize a metal-organic framework loaded with another noble metal nanoparticle. Particle method, preparing a metal-organic framework composite material loaded with two or more noble metal nanoparticles, and then using the prepared metal-organic framework composite material loaded with two or more noble metal nanoparticles to construct an electrochemiluminescent sensor , for the analysis of protein kinase activity and the screening of protein kinase inhibitors.

[0079] In a preferred specific embodiment of the present invention, a method for preparing a metal-organic framework composite material loaded with two or more noble metal nanoparticles is provided, which comprises the following steps:

[0080] (1)...

Embodiment 1

[0102] Example 1 Preparation of metal-organic frameworks simultaneously loaded with nano-gold and nano-platinum

[0103] (1) 120mgZrCl 4 1. Dissolve 96mg of terephthalic acid in a mixed solution of 4mL of glacial acetic acid and 32mL of N,N-dimethylformamide, ultrasonically mix, and then add 1mL of nano-platinum solution and mix evenly. Put the obtained mixed solution into a 45mL polytetrafluoroethylene reactor, put the reactor into a 120°C oven to react for 24 hours, and cool naturally to obtain UiO-66 loaded with nano-platinum;

[0104] (2) Immerse UiO-66 loaded with nano-platinum in 100mL 0.01% (w / v) chloroauric acid solution for 48 hours, then heat the mixed solution to boiling, and add 0.5mL 1% (w / v) sodium citrate solution Quickly add to the boiling chloroauric acid solution, stir continuously, stop heating when the solution turns purple, continue to stir until it cools down, then centrifuge, take the precipitate and dry it, and get UiO-66 composite material loaded with...

Embodiment 2

[0106] Preparation of Example 2 UiO-66 Composite Material Loaded with Nano Silver and Nano Platinum

[0107] (1) 60mg ZrCl 4 1. A mixed solution of 2 mL of glacial acetic acid and 16 mL of N, N'-dimethylformamide was ultrasonically mixed, and 48 mg of terephthalic acid was continued to be added and ultrasonically mixed to make it uniform. Then add 1 mL of nano-silver solution and mix well. The obtained mixed solution was placed in a microwave oven, heated at 1000W for 2 minutes, stopped for 2 minutes, and then heated intermittently for 10 minutes, and centrifuged to obtain UiO-66 loaded with nano-silver.

[0108] (2) According to 1g H 2 PtCl 6 Dissolve in 25mL ethanol to configure H 2 PtCl 6 ethanol solution, take 2.0mL H 2 PtCl 6 Add the ethanol solution to the UiO-66 loaded with nano-silver, stir at a constant speed at room temperature for 36 hours, then add the sodium formate solution according to the molar ratio of platinum and formic acid as 1:10, stir for 1 hour, ...

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Abstract

The invention relates to the field of materials and analytical chemistry, and particularly relates to a noble-metal nanoparticle-loading metal-organic framework composite material, a preparation method and application. The preparation method of the metal-organic framework composite material loading two or more than two noble-metal nanoparticles, provided by the invention, comprises the following steps: mixing raw materials containing organic metal ligands, metal ions and one, two or more than two kinds of first noble-metal nanoparticles, then, putting the mixture in a reaction still or microwave oven, and carrying out a reaction, so as to obtain a metal-organic framework loading one, two or more than two kinds of first noble-metal nanoparticles; mixing the metal-organic framework loading the first noble-metal nanoparticles, a precursor solution of second noble-metal nanoparticles and a reducer, thereby obtaining the metal-organic framework composite material. The composite material hasthe characteristics of high specific surface area, high porosity and easiness in surface functionalization, meanwhile, has the electric conductivity and catalytic effect of the noble-metal nanoparticles, and can be applied to an electrochemiluminescence system.

Description

technical field [0001] The invention relates to the field of materials and analytical chemistry, in particular to a metal-organic framework composite material loaded with various noble metal nanoparticles, a preparation method and application thereof. Background technique [0002] Metal-organic frameworks (MOFs) are a class of crystalline porous materials with a periodic network structure formed by the interconnection of inorganic metal centers (metal ions or metal clusters) and organic ligands through self-assembly. MOFs combine the characteristics of both composite polymers and coordination compounds, and have the characteristics of high porosity, high specific surface area, easy control of pores, diverse skeleton structures, and diverse performances. Initial research on MOFs focused on the H 2 、CH 4 , CO 2 Gas storage, adsorption and separation. However, as a new field of research, researchers have gradually discovered that MOFs have "semiconductor-like" and "quantum-...

Claims

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Application Information

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IPC IPC(8): G01N21/76G01N27/327
Inventor 闫志勇邓平晔汪雨蔡锴陈言慧
Owner BEIJING CENT FOR PHYSICAL & CHEM ANALYSIS
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