Preparation and antibacterial activity test method of antibacterial agent based on mxene quantum dots

A technology of quantum dots and antibacterial agents, which is applied in the field of preparation of new antibacterial agents and antibacterial activity testing, and can solve problems such as complex processes, difficult manufacturing, and easy discoloration

Active Publication Date: 2021-03-16
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of inorganic antibacterial agents are good heat resistance (>600°C), wide antibacterial range, strong antibacterial power, and high safety. However, it is difficult to manufacture, complex in process, easy to change color, and different metals are also limited in application.

Method used

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  • Preparation and antibacterial activity test method of antibacterial agent based on mxene quantum dots
  • Preparation and antibacterial activity test method of antibacterial agent based on mxene quantum dots
  • Preparation and antibacterial activity test method of antibacterial agent based on mxene quantum dots

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Electrochemical preparation Ti 3 C 2 QDS as an example, specifically: uses a block commercial TI 3 ALC 2 As the working electrode, platinum wire is used as a counter electrode, tetramethyl restriohymemonium oxide (TMA · OH) and NH 4 The CL solution was mixed into an electrolytic solution, and the CHI 660D electrochemical workstation was used, and MQDS was prepared by two electrode system constant potential method; the scanning voltage and the scan time were 0.1V and 1H, respectively; the prepared electrolyte was centrifuged for 15 minutes at 8000 r / min, Take the supernatant and then centrifuged again. After repeating it, there is no precipitate in the solution; the solution is filtered by a solution of 220 nM aqueous polyether sulfone needle filter and continuously for 3 days after dialysis with 21 mm (MD25), obtained MQDS aqueous solution (0.12 mg / ml).

[0032] Subsequent MQDS to UV / H 2 O 2 The regulation was prepared to prepare the carboxylated MQDS, specifically: p...

Embodiment 2

[0039] Electrochemical method preparation Ti 3 C 2 QDS, specifically: prepared MQDS using two electrode system constant potential method; block commercial TI 3 ALC 2 As the working electrode, platinum wire is used as a counter electrode, tetramethylammonium hydroxide (TMA · OH) and NH 4 The CL solution is mixed into an electrolyte, using a CHI 660D electrochemical workstation; its scan voltage and scan time are 0.2V and 30 minutes, respectively; the prepared electrolyte is centrifuged at 9000 r / min for 5 minutes, take the supernatant and centrifuged again, repeat again After multiple times until there was no precipitate in the solution; the solution was filtered with a 220 nM aqueous polyether sulfone needle filter and continuously dialyzed with 21 mM (MD25) dialysis bag, and the MQDS aqueous solution (0.12 mg / ml) was obtained.

[0040] UV / H made of MQDS 2 O 2 The regulation was prepared by preparing the carboxylated MQDS, specifically: poured 4 ml of MQDS solution into 10 m...

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Abstract

The invention discloses preparation of an antibacterial agent based on MXene quantum dots and an antibacterial activity testing method, and relates to the field of antibacterial application. Carboxylated MQDs are prepared by combining an electrochemical method and a photochemical method. Firstly, the MQDs are prepared by using the electrochemical method, and Ti3AlC2 is polymerized into Ti3C2 quantum dots in an electrolyte solution. Then, carboxylated MQDs are prepared by using the photochemical method, and hydroxyl radicals generated by H2O2 under ultraviolet irradiation react with the MQDs tofinally obtain the MQDs of which the surfaces contain a large number of carboxyl functional groups. The Ti3C2T<x> MXene quantum dots (MQDs) derived from the two-dimensional MXene material have the advantages that the excellent conductivity, temperature and chemical stability of the original MXene layered material are reserved, good water solubility, biocompatibility and low toxicity are also shown, so that the Ti3C2T<x> MXene quantum dot have a great application potential in the antibacterial field.

Description

Technical field [0001] The present invention relates to the field of antibacterial applications, and more particularly to carboxylated MXENES (eg Ti 3 C 2 ) Preparation of the new antibacterial agent of quantum dots and antibacterial activity test methods, belong to the field of semiconductor materials. Background technique [0002] Antibacterial agents are a class of substances or products having bacteriostatic and sterilization, and is the core of antibacterial materials. In antibacterial agents, inorganic antibacterial agents are mainly antimicrobials prepared by metal, copper, zinc, titanium, mercury, lead and other metals and their ionic sterilization or antibacterial capabilities. The advantages of inorganic antibacterial agents are good heat resistance (> 600 ° C), high antibacterial range, strong antibacterial, and high safety, but it is difficult to manufacture, complex process, easy discoloration, and different metals are also restrictive. . [0003] Ti 3 C 2 MXENE B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01P1/00C12Q1/18
CPCA01N59/16C12Q1/18
Inventor 李妍姜尚佐王钊张莎
Owner UNIV OF SCI & TECH BEIJING
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