Structural, morphological and optical characterization of Ag, Cu and Ag-Cu/TiO2-NTs nanomaterials
Abstract
In the present work we report the structural, morphological, and optical characterization of Ag, Cu and Ag-Cu nanoparticles deposited on TiO2 nanotubes by the vapor phase impregnation technique. The TiO2 nanotubular support has a tetragonal crystalline structure corresponding to the anatase phase, which is preserved by incorporating the metal particles. Only materials with Ag, peaks attributed to Ag0 are observed and those containing Cu are introduced into the crystal lattice of TiO2 in a substitutional doping. The Ag nanoparticles present a high dispersion and an average size of 3.1 nm. The general effect of metal particles is the increased optical absorption at (550 nm) and the incipient appearance of an absorption edge for those containing Cu. Given the known antimicrobial properties of Ag- and Cu-containing particles, the materials obtained in this work were tested with growth inhibitors of the fungus Colletotrichum gloesporoides.
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Copyright (c) 2024 Pedro Sánchez-Sánchez, Nelly Cristina Aguilar-Sanchez, Carlos Angeles-Chavez, María Guadalupe Hernández-Cruz, David Salvador García-Zaleta, Cecilia Encarnación-Gómez
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