Low-density bimodal inorganic oxide monoliths (see Figure) have been prepared via a two-step procedure using macroporous polystyrene foams and amphiphilic block copolymer structure-directing agents. The resulting meso/macroporous inorganic framework structures could be obtained with different 3D bulk shapes and for a range of inorganic oxides, as demonstrated here for silica, zirconia, and titania.
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