| http://www.w3.org/ns/prov#value | - ize and one or more solutions each having increasing sizes, wherein the alkoxide is represented by the general formula M(OR)x where M is a metal atom, R is an alkyl group, having from one to five carbon atoms, and x is the valency of the metal atom, and whereby the plurality of solutions are aged or have increased solution pH so as to obtain solutions having different particle size ranges and the
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