Abstract
This study reports on the effect of the alkali source in pure ZnO and Ag-doped ZnO samples formation quickly synthesized using the microwave-assisted hydrothermal (MAH) method. The flower-like morphology of ZnO and Ag-doped ZnO samples was controlled by the presence of ammonia under reaction conditions, which provided slower ZnO nucleation. In the presence of sodium hydroxide, the precursor species were instantaneously formed, promoting a rapid ZnO formation and the obtainment of Ag0 in the Ag-doped ZnO sample. The presence of Ag+ ions into ZnO wurtzite structure created defects, contributing to a local structural disorder, as observed by Raman spectra. All the samples studied herein presented antifungal activity for Saccharomyces cerevisiae, which was influenced because of the presence of Ag+ ions into ZnO lattice and the morphologies of the samples.
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