A Bioinspired Atomically Thin Nanodot Supported Single-Atom Nanozyme for Antibacterial Textile Coating
Xiaohui Dai1, Huan Liu1, Bin Cai1
1Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 25, 2023
Summary
Researchers developed novel single-atom nanodots (Cu-CNNDs) with high catalytic efficiency for antibacterial applications. These nanozymes show over 99% efficacy on cotton fabrics, offering a promising alternative to traditional antibiotics in textiles.
Area of Science:
- Materials Science
- Nanotechnology
- Biomimetic Chemistry
Background:
- Surface antibacterial coatings are crucial for medical textiles, but current nanozymes lack sufficient catalytic efficiency compared to natural enzymes.
- Single-atom nanodots offer a potential solution to enhance nanozyme catalytic activity.
Purpose of the Study:
- To develop atomically thin carbon nitride nanodots supported single copper atom nanozymes (Cu-CNNDs) with enhanced catalytic performance.
- To investigate the antibacterial efficacy of Cu-CNNDs and their application on cotton fabrics.
Main Methods:
- Fabrication of Cu-CNNDs using a self-tailoring approach.
- Characterization of catalytic efficiency and peroxidase-like activity through experimental and theoretical calculations.
- Grafting Cu-CNNDs onto cotton fabrics and evaluation of antibacterial efficacy.
Main Results:
- Cu-CNNDs exhibited a catalytic efficiency of 8.09 × 10^5 M^-1 s^-1, comparable to natural enzymes.
- The enhanced activity is attributed to the carrier's size effect optimizing coordination structure and exposing the Cu-N3 active site for efficient hydroxyl radical generation.
- Cu-CNNDs demonstrated over 99% antibacterial efficacy when grafted onto cotton fabrics.
Conclusions:
- Atomically thin C3N4 nanodots supported single Cu atom nanozymes (Cu-CNNDs) represent a significant advancement in biomimetic nanozyme design.
- Cu-CNNDs show great potential for developing advanced antibacterial textiles with superior performance.
