| http://www.w3.org/ns/prov#value | - The ultra-fine metallic particles may be the metallic particles of various metals, including, without limitation, transitional metals and noble metals, such as Ag, Au, Co, Cr, Cu, Fe, In, Ir, Mn, Mo, Ni, Nb, Os, Pd, Pt, Re, Rh, Ru, Sn, Ta, Ti, V, W, Zn, and the combinations thereof.
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