Issue 59, 2019

Effect of the electrochemical characteristics of titanium on the adsorption kinetics of albumin

Abstract

An electrochemical quartz crystal microbalance (EQCM) was used to examine the electrochemical behaviour of pure titanium in phosphate buffered saline (PBS) and PBS-containing bovine serum albumin (BSA) solutions, and the associated adsorption characteristics of BSA under cathodic and anodic applied potentials. It was found that the electrochemical behaviours of bulk titanium substrate and titanium-coated QCM sensors are slightly different in PBS buffer solution, which is attributed to the difference in their surface roughness. The oxide film formed on the surface of the QCM sensor during potentiostatic tests was found to affect its electrochemical behaviour, while cathodic cleaning is not sufficient to have it removed. Lastly, the excessive amount of electrons on the titanium surface upon application of a cathodic potential could result in the desorption of BSA due to electrostatic repulsion and protein dehydration. In contrast, application of anodic potential charges the titanium surface positively and can facilitate protein adsorption when the surface is not saturated with protein.

Graphical abstract: Effect of the electrochemical characteristics of titanium on the adsorption kinetics of albumin

Article information

Article type
Paper
Submitted
02 Aug 2019
Accepted
19 Oct 2019
First published
24 Oct 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 34265-34273

Effect of the electrochemical characteristics of titanium on the adsorption kinetics of albumin

E. Liamas, O. R. T. Thomas, A. I. Muñoz and Z. J. Zhang, RSC Adv., 2019, 9, 34265 DOI: 10.1039/C9RA05988A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements