The formation of gigantic hollow silica spheres from an EO76-PO29EO76/butanol/ethanol/H2O quaternary system

Gigantic hollow silica spheres with a hierarchical intra- and inter-particle porosity were obtained from an EO(76)-PO(29)-EO(76)/butanol/ethanol/H(2)O quaternary system, which is unique in its extremely rapid silica condensation and in the resulting hierarchical morphology.