Hyperstoichiometric Interaction Between Silver and Mercury at the Nanoscale

Kseniia V. Katok, Raymond L. D. Whitby, Takahiro Fukuda, Toru Maekawa, Igor Bezverkhyy, Sergey V. Mikhalovsky, Andrew B. Cundy

2012

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DOI 10.1002/ange.201106776

Data confidence 70 medium

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Abstract

Durchbrechen der Stöchiometriebarriere: Sobald der Durchmesser von Silberpartikeln unter eine kritische Größe von 32 nm gesenkt wird, steigt das Molverhältnis von wässrigem HgII zu Ag0 über das konventionelle Hg/Ag-Verhältnis von 0.5:1 drastisch an, bis hin zu einer Hyperstöchiometrie von 1.125:1 (siehe Bild). In der entstehenden Phase bleiben ungefähr 99 % des ursprünglichen Silbers erhalten und bilden ein festes Amalgam mit verringertem Quecksilbergehalt.