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Facile Synthetic Route for Thickness and Composition Tunable Hollow Metal Oxide Spheres from Silica-Templated Coordination Polymers



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Monodisperse hollow metal oxides are generated from silica@coordination polymer core/shell precursors through a calcination process to transform coordination polymers into metal oxides, followed by an etching process to remove silica cores. The layer thicknesses of the hollow structures are effectively controlled by adjusting the shell thicknesses of the coordination polymers within the silica@coordination polymer core/shell precursors.