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Fe3O4 @ hemoglobin core-shell structure material as well as preparation method and application thereof

A core-shell structure, hemoglobin technology, applied in electrolytic components, electrodes, electrolysis process, etc., can solve the problems of complex hemoglobin magnetic molecularly imprinted polymer system, difficult to clarify the interaction relationship between various substances, difficult to promote and apply in industry, etc. , to improve the efficiency of electrochemical oxygen evolution, improve the efficiency of synergy, and inhibit the generation of hydrogen peroxide

Active Publication Date: 2021-04-16
JINLING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in general, the currently reported binding process of hemoglobin and magnetic nanoparticles involves a multi-step chemical bridging and coupling process, which is relatively complicated and difficult for industrial promotion and application; and its application mainly involves the field of selective recognition of molecules , sensors, and dye adsorption. In fact, the three fields of molecular selective recognition, sensors, and dye adsorption are completely different research fields from photocatalytic water analysis and oxygen reaction. Their internal mechanisms and mechanisms are completely different. Difficult to determine the hemoglobin / Fe reported in these studies 3 o 4 Whether the complex and the hemoglobin magnetic molecularly imprinted polymer and other products have photocatalytic water resolving oxygen reaction activity; in addition, because the system of this kind of hemoglobin magnetic molecularly imprinted polymer is relatively complex, it is still difficult to clarify the interaction between the various components relation

Method used

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  • Fe3O4 @ hemoglobin core-shell structure material as well as preparation method and application thereof
  • Fe3O4 @ hemoglobin core-shell structure material as well as preparation method and application thereof
  • Fe3O4 @ hemoglobin core-shell structure material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Example 1 Fe 3 o 4 Preparation method of @hemoglobin core-shell structure material

[0039] S1, with FeCl 3 .6H 2 O is the raw material, 50 mL deionized water is the solvent, and the reactant FeCl 3 .6H 2 O concentration is 0.8mol L -1 , sodium citrate and sodium polyacrylate as surfactants, the concentration of sodium citrate is 0.05mol L -1 , the concentration of polyacrylic acid is 0.5×10 -3 mol L -1 , water temperature 180 o C, the hydrothermal time is 20h, after the hydrothermal reaction is over, place it on the bottom of the container with a magnet, Fe 3 o 4 The microbeads gather at the bottom of the container, pour out the reaction solution in the upper part of the container, and the Fe with a diameter of about 180nm is produced in the container. 3 o 4 microbeads.

[0040] S2, the Fe prepared in step S1 3 o 4 Microbeads were immersed in 10mg / mL hemoglobin aqueous solution (pH=7). 3 o 4 Self-assembled on the surface of the microbeads for 72 hours ...

Embodiment 2

[0051] Example 2 Fe 3 o 4 Preparation method of @hemoglobin core-shell structure material

[0052] S1, with FeCl 3 .6H 2 O is the raw material, 50 mL deionized water is the solvent, and the reactant FeCl 3 .6H 2 O concentration is 0.8mol L-1, sodium citrate concentration is 0.05mol L -1 , the concentration of polyacrylic acid is 0.5×10 -3 mol L -1 , water temperature 180 o C, hydrothermal time 24h, after the hydrothermal reaction is over, place it on the bottom of the container with a magnet, Fe3O4 microbeads gather at the bottom of the container, pour out the reaction solution in the upper part of the container, and the obtained Fe in the container 3 o 4 microbeads.

[0053] S2, the Fe prepared in step S1 3 o 4 Microbeads were immersed in 10mg / mL hemoglobin aqueous solution (pH=7). 3 o 4 Self-assembled on the surface of the microbeads for 24 hours to obtain hemoglobin as the shell and superparamagnetic nano-Fe 3 o 4Microbeads are the core-shell structure mater...

Embodiment 3

[0061] Example 3 Fe 3 o 4 Preparation method of @hemoglobin core-shell structure material

[0062] S1, with FeCl 3 .6H 2 O is the raw material, 50 mL deionized water is the solvent, and the reactant FeCl 3 .6H 2 O concentration is 0.8mol L-1, sodium citrate concentration is 0.05mol L -1 , the concentration of polyacrylic acid is 0.5×10 -3 mol L -1 , water temperature 180 o C, the hydrothermal time is 24h, after the hydrothermal reaction is over, place it on the bottom of the container with a magnet, Fe 3 o 4 The microbeads are gathered at the bottom of the container, and the reaction solution in the upper part of the container is poured out, and the obtained Fe in the container 3 o 4 microbeads.

[0063] S2, the Fe prepared in step S1 3 o 4 Microbeads were immersed in 10mg / mL hemoglobin aqueous solution (pH=7). 3 o 4 Self-assembled on the surface of microbeads for 48 hours to obtain hemoglobin as the shell and superparamagnetic nano-Fe 3 o 4 Microbeads are th...

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Abstract

The invention discloses a Fe3O4@hemoglobin core-shell structure material and a preparation method; the core of the material is nano Fe3O4 microbeads, the shell layer is hemoglobin, the Fe3O4@hemoglobin core-shell structure material can be used as an electrocatalytic material for water decomposition oxygen production and inhibition of generation of hydrogen peroxide in the system, the preparation method is simple and easy to implement, and special equipment and harsh conditions are not needed.

Description

technical field [0001] The invention relates to the interdisciplinary technical fields of inorganic nano-magnetic materials, biological materials and energy materials, in particular to a Fe 3 o 4 @hemoglobin core-shell structure materials, preparation methods and applications. Background technique [0002] Excessive use of fossil fuels has led to energy crises and environmental problems on a global scale. Hydrogen is an ideal clean energy with high energy density, and it is an effective measure to solve energy crisis and environmental problems by splitting water through electrocatalysis, producing hydrogen from water and utilizing it. Studies at home and abroad have shown that the reason for the improvement of the efficiency of electrocatalytic water splitting is that, on the one hand, the kinetic barrier of the oxygen evolution reaction at the anode is high, which reduces the overall efficiency of water splitting and severely inhibits the hydrogen evolution half-reaction ...

Claims

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Application Information

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IPC IPC(8): C25B11/095C25B1/04
CPCY02E60/36
Inventor 张文妍王威杨晓莉胡颖飞管航敏郝凌云
Owner JINLING INST OF TECH