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Current Topics in Electrochemistry   Volumes    Volume 22 
Electrochemical evaluation of two polyaza Ru(II) complexes as sensitizing materials in photocatalysis
J. Góngora-Gómez, P. Elizondo-Martínez, A. Hernández-Ramírez, L. Blanco-Jerez, S. López-Cortina
Pages: 19 - 25
Number of pages: 7
Current Topics in Electrochemistry
Volume 22 

Copyright © 2020 Research Trends. All rights reserved

This paper reports the synthesis and electrochemical characterization of two new polyaza complexes of Ruthenium(II). These complexes were obtained from the direct reaction between RuCl3 and the N1-(2-aminebenciliden)-N2, N2-bis(2-(2-aminebenciliden)amine)ethyl)ethane-1,2-diamine (L1), and N1,N2-bis(2-aminebenciliden)ethane-1,2-diamine (L2) polyaza-type ligands. The complexes were characterized by infrared (IR) spectroscopy, by their fusion point, and by elementary analysis (EA) and fluorescence analysis (FA), to determine their chemical properties. The redox potentials of Ru(II) [(Ru(II)/Ru(III) and Ru(III)/Ru(II)] were determined for each synthesized complex using the cyclic voltammetry (CV) technique. The electrochemical characterization was performed with an Au electrode modified by chemisorption with each complex after depositing a mercaptopropionic acid (MPA) layer. The obtained redox potential values show that the complexes can inject electronic charge into the conduction band (CB) of the TiO2 semiconductor, which enhances its photocatalytic activity under visible light and allows the application of this sensitized material in photocatalytic processes with higher efficiency and sustainability.
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