Electroactive polyhydroquinone coatings for marine fouling prevention - a rejected dynamic pH hypothesis and a deceiving artifact in electrochemical antifouling testing
Files
(Published version)
Date
2017
Authors
Larsson, M.
Yousefi, A.
Elmas, S.
Lindén, J.B.
Nann, T.
Nydén, M.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
ACS Omega, 2017; 2(8):4751-4759
Statement of Responsibility
Conference Name
Abstract
Nanometer-thin coatings of polyhydroquinone (PHQ), which release and absorb protons upon oxidation and reduction, respectively, were tested for electrochemically induced anti-biofouling activity under the hypothesis that a dynamic pH environment would discourage fouling. Antifouling tests in artificial seawater using the marine, biofilm-forming bacterium Vibrio alginolyticus proved the coatings to be ineffective in fouling prevention but revealed a deceiving artifact from the reactive species generated at the counter electrode (CE), even for electrochemical bias potentials as low as |400| mV versus Ag|AgCl. These findings provide valuable information on the preparation of nanothin PHQ coatings and their electrochemical behavior in artificial seawater. The results further demonstrate that it is critical to isolate the CE in electrochemical anti-biofouling testing.
School/Discipline
Dissertation Note
Provenance
Description
Data source: Supporting Information, http://pubs.acs.org/doi/suppl/10.1021/acsomega.7b00485
Access Status
Rights
Copyright 2017 American Chemical Society. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html)