Abstract
In-situ growth of nanometer size metal oxide crystallites within polyelectrolyte block-copolymer membranes is demonstrated with example of ZnO loaded Nexar and SEBS films. The proposed method allows for the controlled synthesis of ZnO nanoparticles ranging from 2 to 8 nm uniformly dispersed within the membranes. The fabricated films are characterized with XRD, TEM and HAADF-STEM techniques. It is shown that particles size and shape can be tuned by varying the solvent composition. Addition of methanol favors the growth of smaller-sized ZnO. The proposed method can be applied to produce other metal oxide – polyelectrolyte nanocomposites, which may find various applications ranging from fuel cells and other electrochemical devices to separation membranes and protective barriers.
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