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
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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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