Abstract
The results of investigation of the adsorption kinetics of pyridine (Py) show that the M+z = Ag+, Cu+2, and Au+3 ions supported on the surface of TiO2 (anatase) significantly increase its electron-acceptor properties. Two types of M+z/TiO2 adsorption sites are characterized by the various numbers of the pyridine coordination centers M and their oxidation states. Linear correlations between the rate constants of pyridine adsorption and the ionic radii are observed in the cases of both types of sites. The adsorption stoichiometry of the less active sites is Py-2M, where M = Cu+, Au+, and Ag0. The linear dependence of the antibacterial activity of M+z/TiO2 on the ionic charge z = +1 (for Ag), +2 (for Cu), and +3 (for Au), as well as the ability of bacteria to reduce dissolved silver and gold ions and those supported on TiO2 to colloidal metals, is also found.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Protection of Metals and Physical Chemistry of Surfaces
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
