Issue 12, 2016

Triple-enzyme mimetic activity of Co3O4 nanotubes and their applications in colorimetric sensing of glutathione

Abstract

The enzyme-like activity of Co3O4 nanomaterials has attracted tremendous interest because of their extraordinarily high electron mobility and catalytic activity. However, there are still some controversies on their catalytic performance. In this work, we prepared Co3O4 nanotubes with a large surface area and a uniform nanostructure by electrospinning, and investigated the triple-enzyme mimetic activity of Co3O4 nanotubes: oxidase-like activity, peroxidase-like activity and catalase-like activity. Considering different opinions on the oxidase-like activity of Co3O4 nanoparticles, we investigated the catalytic oxidation performance and the mechanism of Co3O4 nanotubes in detail. The results demonstrated that the Co3O4 nanotubes could effectively catalyze the oxidation of substrate 3,3′,5,5′-tetramethylbenzidine (TMB) in the absence of exogenously added H2O2 to produce the blue color product oxTMB. The excellent oxidase-like activities of Co3O4 nanotubes were probably because of the unique nanostructures and large surface area, which may easily adsorb substrates and give more active reaction sites. In addition, based on the oxidase-like activity of Co3O4 nanotubes, a simple and sensitive colorimetric sensor has been developed for the detection of glutathione via the TMB–O2–Co3O4 nanotube system.

Graphical abstract: Triple-enzyme mimetic activity of Co3O4 nanotubes and their applications in colorimetric sensing of glutathione

Supplementary files

Article information

Article type
Paper
Submitted
23 Jul 2016
Accepted
12 Oct 2016
First published
13 Oct 2016

New J. Chem., 2016,40, 10056-10063

Triple-enzyme mimetic activity of Co3O4 nanotubes and their applications in colorimetric sensing of glutathione

T. Wang, P. Su, H. Li, Y. Yang and Y. Yang, New J. Chem., 2016, 40, 10056 DOI: 10.1039/C6NJ02280D

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