Production of silver nano-powders by electron beam evaporation

• Published in: Vacuum Vol. 77; no. 4; pp. 485 - 491
• Main Authors: Korchagin, A.I., Kuksanov, N.K., Lavrukhin, A.V., Fadeev, S.N., Salimov, R.A., Bardakhanov, S.P., Goncharov, V.B., Suknev, A.P., Paukshtis, E.A., Larina, T.V., Zaikovskii, V.I., Bogdanov, S.V., Bal’zhinimaev, B.S.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 11-03-2005
• Subjects: Catalyst; Electron accelerator; Ethylene epoxidation; Nano-sized powder; Silver evaporation; Nano-sized powder; Ethylene epoxidation; Silver evaporation; Electron accelerator; Catalyst
• ISSN: 0042-207X; 1879-2715
• DOI: 10.1016/j.vacuum.2004.09.015

Evaporation of metallic silver was performed in Ar, N2 and He using the ELV-6 electron accelerator. The obtained ultra-dispersed powders with a particle size of 70–80nm were investigated by XRD, HREM and UV–Vis spectroscopy. The structure of Ag(Ar) powder was shown to differ substantially from that of Ag(N2) by the presence of small oxide-like species of 10–20nm on the particle surface. Catalytic activity of the powders in the reaction of ethylene epoxidation was also studied.