Fast pulsed electrodeposition of silver nanoparticles on polypyrrole thin films for antibacterial and biomedical applications
Source abstract
Abstract
This research paper presents a fast method for the double pulse electrodeposition of silver nanoparticles on a thin polypyrrole film with a thickness of about 4 µm, aiming to improve its electrical conductivity and antibacterial activity for biomedical applications. The electrodeposition and the electrochemical behavior of the deposits was studied using chronoamperometry and electrochemical impedance spectroscopy. SEM and XRD were used to characterize the morphological and microstructural characteristics of the deposits. The antibacterial performances of the deposits were tested against E.coli and S.aureus bacteria. It was found that the AgNO 3 concentration of 10 −2 M and/or the duration of the two pulses (1 s and 10 s) led to the deposition of micrometric or submicrometric Ag particles inhomogeneous in size and distribution on the PPy surface. The lower AgNO 3 concentration (10 −3 M) and the shorter pulse durations (0.1 s and 1 s) resulted in nanometric Ag particles with the most homogeneous size and distribution on the PPy surface. Furthermore, the Ag nanoparticles on PPy surface showed the highest electrical conductivity and the strongest killing efficiency of the two types of bacteria (100% against E.coli and 99.99% against S.aureus).
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrodeposition and Electroless Coatings · Electrochemical Analysis and Applications · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (95)
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