| http://www.w3.org/ns/prov#value | - In particular, sols of nanoparticles of metal(s) oxide(s) will be used, such as zirconia, alumina, silica, hafnium oxide (hafnia), titanium dioxide(titania) etc., the particles being dense, porous, microporous, macroporous or mesoporous.The size of the nanoparticles in the sol obtained is perfectly controlled by its synthesis conditions, in particular by the nature of the precursors used, the solv
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