Stober's strategy was first presented in 1968, for the union of monodispersed silica particles in the sub-micrometer range. This method uses a silica forerunner, tetraethyl orthosilicate (TEOS) which within the sight of ethanol and ammonium hydroxide (NH2OH), goes through hydrolysis followed by a polycondensation response to deliver non-permeable silica particles and Polystyrene Microspheres 1μm with sizes under 200 nm.
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