Issue 43, 2021

Sulfur-doping tuning oxygen vacancies in ultrathin 2D Ni–V mixed metal oxides for exceptional oxidase mimic and antibacterial applications

Abstract

The development of effective and low-cost enzyme-like nanomaterials is an essential issue for antibacterial applications. Herein, novel ultrathin Ni–V mixed metal oxides (MMOs) doped with sulfur(S) were successfully designed. After calcination with S powder in a N2 atmosphere instead of in the air without S powder, the results proved that the obtained S-doping Ni–V MMOs remain ultrathin (5 nm in thickness) with much more vacancies and enhance oxidase (OXD) and peroxidase (POD) mimic activities sharply. More importantly, Ni–V MMO with a Ni/V molar ratio of 2 : 1 calcinated at 400 °C in the presence of sulfur shows the best OXD/POD mimic activity. The S-doping Ni–V MMOs also exhibit an antibacterial action on mode Gram-negative bacteria via generating ROS (mainly ˙O2) in the presence of H2O2. It is also easily performed and highly specific. The unique 2D hierarchical nanostructure and sulfur doping endow the S-doping Ni–V MMO with abundant active sites and superb OXD/POD-like activity. The strategy expands the possibilities for boosting the catalytic activity of LDH-derived MMO nanomaterials.

Graphical abstract: Sulfur-doping tuning oxygen vacancies in ultrathin 2D Ni–V mixed metal oxides for exceptional oxidase mimic and antibacterial applications

Supplementary files

Article information

Article type
Paper
Submitted
01 Sep 2021
Accepted
08 Oct 2021
First published
26 Oct 2021

J. Mater. Chem. C, 2021,9, 15445-15451

Sulfur-doping tuning oxygen vacancies in ultrathin 2D Ni–V mixed metal oxides for exceptional oxidase mimic and antibacterial applications

Y. Wang, C. Chen and D. Zhang, J. Mater. Chem. C, 2021, 9, 15445 DOI: 10.1039/D1TC04131B

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