Issue 11, 2023

Insights into efficient bacterial inactivation over nano Ag/graphdiyne: dual activation of molecular oxygen and water molecules

Abstract

The dual activation mechanism of molecular oxygen (O2) and water (H2O) in the local structure of catalysts has not been elucidated yet. Herein, we report a strategy for manufacturing fully exposed Ag4 sites in nano silver/graphdiyne (Ag/GDY) composites for activating O2 and H2O. The synthesized nano Ag was uniformly anchored on the surface of GDY without any surfactant added, with an average particle size of 2.5 nm. The unique sp-hybrid C and triangular pore structure of GDY not only regulate the stable geometric structure of nano Ag, but also enhance the adsorption ability of Ag4 sites for O2 and H2O molecules in nano Ag/GDY. Electron spin resonance spectroscopy and density functional theory calculation results proved that O2 is more favorable to synergistically promote the activation of H2O to generate reactive ·O2 and ·OH radicals on the nano Ag/GDY surfaces, leading to outstanding antibacterial activity. This work provides a simple strategy for the preparation of stable nano Ag and proposes to improve the catalytic oxidation activity by adjusting the local electronic structure of catalysts to activate O2 and H2O.

Graphical abstract: Insights into efficient bacterial inactivation over nano Ag/graphdiyne: dual activation of molecular oxygen and water molecules

Supplementary files

Article information

Article type
Paper
Submitted
18 7 2023
Accepted
06 9 2023
First published
12 9 2023

Environ. Sci.: Nano, 2023,10, 3072-3083

Insights into efficient bacterial inactivation over nano Ag/graphdiyne: dual activation of molecular oxygen and water molecules

C. Pan, B. Zhang, T. Pan, H. Huang, S. Song, X. Cai, Y. Wang, H. Sun, Z. Luo, L. Zhang and Y. Guo, Environ. Sci.: Nano, 2023, 10, 3072 DOI: 10.1039/D3EN00480E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements