Issue 16, 2020

Electrodeposition of nickel nanostructures using silica nanochannels as confinement for low-fouling enzyme-free glucose detection

Abstract

This work reports an enzyme-free glucose sensor based on nickel nanostructures electrodeposited on a fluorine-doped tin oxide (FTO) electrode modified with a silica nanochannel membrane (SNM). The SNM consists of a high density of nanochannels vertically oriented to the electrode surface, which can spatially confine the electrodeposition of nickel nanostructures and protect them to make Ni@SNM/FTO electrodes. In alkaline media, nickel could be converted to nickel oxyhydroxide that displayed catalytic activity toward the anodic oxidation of glucose. The electrodes could thus function as enzyme-free sensors for glucose detection. Under optimal conditions, the sensors exhibited an excellent analytical performance, with an analytical sensitivity as high as 62.3 μA mM−1 cm−2, a wide detection range from 10 μM to 12 mM and a low detection limit of 0.44 μM. Furthermore, given nickel nanostructures were embedded inside the nanochannels of the SNM (with a diameter of 2–3 nm), the sensor possessed anti-fouling ability and outstanding current stability, thus allowing the direct detection of glucose in dilute blood samples.

Graphical abstract: Electrodeposition of nickel nanostructures using silica nanochannels as confinement for low-fouling enzyme-free glucose detection

  • This article is part of the themed collection: Biosensors

Supplementary files

Article information

Article type
Paper
Submitted
04 nov. 2019
Accepted
13 déc. 2019
First published
14 déc. 2019

J. Mater. Chem. B, 2020,8, 3616-3622

Electrodeposition of nickel nanostructures using silica nanochannels as confinement for low-fouling enzyme-free glucose detection

J. Ding, X. Li, L. Zhou, R. Yang, F. Yan and B. Su, J. Mater. Chem. B, 2020, 8, 3616 DOI: 10.1039/C9TB02472G

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