A sonochemical approach to hierarchical porous titania spheres with enhanced photocatalytic activityElectronic Supplementary Information (ESI) available: XRD patterns, nitrogen adsorption/desorption isotherms, pore size distribution curves, photocatalytic activities and physicochemical properties of HPT and SMT. See http://www.rsc.org/suppdata/cc/b3/b306013f/

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Abstract
A novel sonochemical approach has been developed to prepare hierarchical porous titania spheres in the presence of a triblock copolymer; it was found that textural meso- and macro-porosity could enhance the photocatalytic activity of mesoporous TiO2.