Issue 48, 2023

2D-MoS2-supported copper peroxide nanodots with enhanced nanozyme activity: application in antibacterial activity

Abstract

Peroxidase (POD)-like nanozymes are an upcoming class of new-generation antibiotics that are efficient for broad-spectrum antibacterial action. The POD-like activity employs the generation of reactive oxygen species (ROS), which have been utilized for bactericidal action. However, their intrinsic low catalytic activity and stability limit their bactericidal properties. In this study, we prepared a MoS2-based nanocomposite with copper peroxide nanodots (MoS2@CP) to achieve pH-dependent light-induced nanozyme-based antibacterial action. It has shown superior peroxidase and antibacterial activity at low pH. The mechanism behind the enhanced POD-like activity and high antibacterial activity was established. The mechanistic pathway involves estimating ROS generation, membrane depolarization, inner membrane permeabilization, metal ion release, and the effect of NIR on photothermal and photodynamic activities. Overall, our work highlighted the combinatorial approach for eradicating bacterial infections using enzyme-based antibacterial agents.

Graphical abstract: 2D-MoS2-supported copper peroxide nanodots with enhanced nanozyme activity: application in antibacterial activity

  • This article is part of the themed collection: Nanozymes

Supplementary files

Article information

Article type
Paper
Submitted
29 okt 2023
Accepted
12 noy 2023
First published
17 noy 2023

Nanoscale, 2023,15, 19801-19814

2D-MoS2-supported copper peroxide nanodots with enhanced nanozyme activity: application in antibacterial activity

A. Kumari, J. Sahoo and M. De, Nanoscale, 2023, 15, 19801 DOI: 10.1039/D3NR05458F

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