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MXene/ manganese phosphate composite material, and preparation method and application thereof

A manganese phosphate composite material and composite material technology, applied in the field of electrochemical biosensing, can solve the problems of uneven binding, insufficient active sites, unsatisfactory detection speed and accuracy, etc., to achieve more active sites and stable transmission speed , the effect of increasing efficiency

Pending Publication Date: 2019-06-18
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the Mxene-manganese phosphate composite electrode material prepared by the above-mentioned patents can 2 · - Good detection, but there are still problems such as insufficient active sites and uneven binding, and the detection speed and accuracy are still not ideal in practical applications

Method used

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  • MXene/ manganese phosphate composite material, and preparation method and application thereof
  • MXene/ manganese phosphate composite material, and preparation method and application thereof
  • MXene/ manganese phosphate composite material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] (1) Prepare 300mL of 0.001mol / L manganese chloride solution for use; then prepare a mixture of 0.001mol / L potassium dihydrogen phosphate and 0.00185mol / L 4-hydroxyethylpiperazineethanesulfonic acid solution, and then add some potassium hydroxide to make the pH value of the solution 7.1; then slowly add the prepared mixed solution to the manganese chloride solution, heat it in a water bath under constant stirring, finally centrifuge and wash with water, and freeze-dry to obtain white precipitated phosphoric acid Manganese trihydrate;

[0042] (2) Prepare 50 mL of a solution of manganese phosphate trihydrate with a concentration of 0.004 mol / L, add it to a hydrothermal reaction kettle and react for 3.5 hours at 250°C; then wash the precipitate with centrifugal water, put it in a vacuum drying oven and dry it at 120°C for 5 hours, Obtain anhydrous δ-manganese phosphate;

[0043] (3) Add anhydrous δ-manganese phosphate to N,N-dimethylformamide to make a 0.5mg / mL solution, ...

Embodiment 2

[0056] (1) Prepare 500mL of 0.001mol / L manganese chloride solution for use; then prepare 500mL of 0.001mol / L potassium dihydrogen phosphate and 0.00180mol / L of 4-hydroxyethylpiperazineethanesulfonic acid Solution, then add some sodium hydroxide to make the pH value of the solution 7.0; then slowly add the prepared mixed solution to the manganese chloride solution, heat it in a water bath under constant stirring, finally centrifuge and wash with water, and freeze-dry to obtain white precipitated phosphoric acid Manganese trihydrate;

[0057] (2) Prepare 100 mL of a solution of manganese phosphate trihydrate with a concentration of 0.0035 mol / L, add it to a hydrothermal reaction kettle and react for 3.5 hours at 245°C; then wash the precipitate with centrifugal water, put it in a vacuum drying oven and dry it at 120°C for 5 hours, Obtain anhydrous δ-manganese phosphate;

[0058] (3) Add anhydrous δ-manganese phosphate to N,N-dimethylformamide to make a 0.5mg / mL solution, ultras...

Embodiment 3

[0063](1) Prepare 200mL of 0.001mol / L manganese chloride solution for use; then prepare 200mL of 0.001mol / L potassium dihydrogen phosphate and 0.002mol / L of 4-hydroxyethylpiperazineethanesulfonic acid solution, and then add some potassium hydroxide to make the pH value of the solution 7.0; then slowly add the prepared mixed solution to the manganese chloride solution, heat it in a water bath under constant stirring, finally centrifuge and wash with water, and freeze-dry to obtain white precipitated phosphoric acid Manganese trihydrate;

[0064] (2) Prepare 50 mL of a solution of manganese phosphate trihydrate with a concentration of 0.0035 mol / L, add it to a hydrothermal reaction kettle and react for 3.5 hours at 255°C; then wash the precipitate by centrifugation and dry it in a vacuum drying oven at 115°C for 5.5 hours , to obtain anhydrous δ-manganese phosphate;

[0065] (3) Add anhydrous δ-manganese phosphate to N,N-dimethylformamide to make a 0.5mg / mL solution, ultrasonic...

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Abstract

The invention discloses an MXene / manganese phosphate composite material, and a preparation method and application thereof. The composite material is prepared by mixing flake-like MXene and flake-likemanganese phosphate, wherein the flake-like MXene and the flake-like manganese phosphate are both of a nanoscale size, and the charge mass ratio of the flake-like MXene to the flake-like manganese phosphate is 1:9.5-10.5. The preparation of the MXene / manganese phosphate composite material comprises the following steps that: after the flake-like MXene and the flake-like manganese phosphate are independently added into water, dispersing and drying to obtain the MXene / manganese phosphate composite material. The above prepared MXene / manganese phosphate composite material is applied to superoxide anion detection. The composite material disclosed by the invention has more active loci, both has excellent electron transmission efficiency and stable transmission speed, and is especially suitable for detecting superoxide anions.

Description

technical field [0001] The invention belongs to the field of electrochemical biosensing, and in particular relates to an MXene / manganese phosphate composite material and a preparation method and application thereof. Background technique [0002] Reactive oxygen species (ROS) are a type of reduction product of oxygen in organisms, including superoxide anion (O 2 · - ), hydrogen peroxide (H 2 o 2 ), hydroxyl radical (·OH), etc. o 2 · - Is a special reactive oxygen species, involved in many physiological and chemical reactions, under normal physiological conditions, trace amounts of O 2 · - Harmless to humans; but in pathological conditions, excess O 2 · - It is harmful to the human body, damages human tissue, accelerates the aging of human organs, and induces various physiological diseases. Therefore, real-time, rapid, sensitive, quantitative and specific detection of O 2 · - It is of great significance to study the pathogenic mechanism related to it and prevent ma...

Claims

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Application Information

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IPC IPC(8): G01N27/26G01N27/38
Inventor 郭春显赵沈飞李长明
Owner SUZHOU UNIV OF SCI & TECH
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