Abstract
Rapid and efficient killings of bacteria are critically required due to the emergence and growth of antimicrobial resistance. In this paper, Nb2CTx was used for sterilization experiments against Staphylococcus aureus under infrared light irradiation. The results showed that 1.0 mg/mL of Nb2CTx had the best sterilization effect, and the inactivation rate was 99.72% within 80 min of infrared light irradiation. The analysis of the sterilization mechanism illustrated that the photothermal synergy sterilization of Nb2CTx mainly depends on physical contact, the generation of reactive oxygen species, and the photothermal synergy effect. More importantly, Nb2CTx still has good bactericidal ability after four testing cycles due to its high stability. The excellent properties of Nb2CTx suggest them as promising photocatalytic antibacterial agents.
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