Solvated metal atom dispersion
Solvated Metal Atom Dispersion is a method of producing highly reactive[1] solvated nanoparticles. Samples of a metal (or ceramic)[1] are heated to evaporate free atoms (or species), as in PVD evaporation. This vapor is then co-deposited with a suitable organic solvent (e.g. toluene)[2] at very low temperatures (on the order of 70K) to form a solid mixture of the two.[3] This is then warmed towards room temperature, producing solvated metal atoms or (over time) larger clusters. Sometimes, catalyst supports (such as SiO2 or Al2O3) are added to improve nucleation,[4] as the process can more readily take place on surface OH groups.
References[edit]
- ^ a b
Sergeev, G.B.; Klabunde, K.J. (Jan 2013). "Solvated Metal Atom Dispersion (SMAD) for Making Metal Nanoparticles". Research Gate: 55–73.
{{cite journal}}: Cite journal requires|journal=(help) - ^ Schubert, Ulrich; Hüsing, Nicola (March 2012). "7" (PDF). Synthesis of Inorganic Materials, 3rd Edition (Third ed.). Wiley. pp. 370–375. ISBN 978-3-527-32714-0.
- ^ Klabunde, Kenneth J. (1992). "Solvated Atoms of Platinum, Palladium and Gold — Precursors to Colloids, Films and Catalysts" (PDF). Platinum Metals Review. 36: 80–84. ISSN 0032-1400.
- ^ Klabunde, Kenneth J.; Li, Yong-Xi; Tan, Beng-jit (1991). "Solvated Metal Atom Dispersed Catalysts". Chemistry of Materials. 3: 30–39. doi:10.1021/cm00013a013. ISSN 0897-4756.
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