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Iodine-doped Carbon Dots with Inherent Peroxidase Catalytic Activity for Photocatalytic Antibacterial and Wound Disinfection by XiuLi Wang; Yinguang Lu; Kunwei Hua; Dezhi Yang; Yaling Yang is a Chemistry article available to read on EtoBox.

What is Iodine-doped Carbon Dots with Inherent Peroxidase Catalytic Activity for Photocatalytic Antibacterial and Wound Disinfection about?

A new type of nitrogen-iodine co-doped carbon dot (N/I-CD) was synthesized by a one-step hydrothermal method with a fluorescence quantum yield of 37%. The prepared N/I-CDs exhibit peroxidase-like activity, can catalyze bio-safety levels of HO to generate hydroxyl radicals (•OH) under visible light and enhance the level of reactive oxygen species (ROS) in bacteria cells. All in vitro experiments showed that the designed system has strong photocatalytic antibacterial activity against both E. coli and S. aureus bacteria. The light-induced antibacterial function of N/I-CDs was evaluated under the conditions of changing other experimental parameters. When the visible light irradiation time was extended to 60 min, the antibacterial efficiency of N/I-CDs (0.21 mg·mL) against S. aureus and E. coli reached 100% in the presence of exogenous HO (0.07 mM). More importantly, wound disinfection in vivo demonstrates the high antibacterial efficiency, low toxicity and application potential of good biocompatibility due to the nanozyme activity of N/I-CDs.

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Author

XiuLi Wang; Yinguang Lu; Kunwei Hua; Dezhi Yang; Yaling Yang

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Chemistry (Physical Sciences)