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In this paper, Stöber process with high concentration of tetra-ethyl-orthosilicate (TEOS) up to 1.24M is used to prepare monodisperse and uniform-size silica particles. The reactions are carried out at [TEOS]=0.22–1.24M, low concentrations of ammonia ([NH 3 ]=0.81[TEOS]), and [H 2 O]=6.25[TEOS] in isopropanol. The solids content in the resulting suspension achieves a maximum value...
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