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A highly ordered arrangement of pores with multiple sizes in film and particle forms was successfully prepared using the dip-coating and spray-drying methods, respectively. The template-driven self-assembly technique was effective when a combination of 5nm silica (as a model of an inorganic nanoparticle) and two different sizes of monodispersed polystyrene (PS) spheres (as models of the template)...
An anatase titania particle with a honey-comb-like pore structure (200nm-pore size) and a controllable outer diameter (0.2–1μm) was successfully prepared using a spray-drying method. As a precursor, an anatase nanoparticle (5nm) and a polystyrene particle (200nm) were used as a titania source and a colloidal template, respectively. The outer diameter could be controlled by varying the precursor concentration...
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