纳米尺度上银和汞的超化学计量相互作用。
Hyperstoichiometric interaction between silver and mercury at the nanoscale.
机构信息
Nanoscience & Nanotechnology Group, Faculty of Science and Engineering, University of Brighton, UK.
出版信息
Angew Chem Int Ed Engl. 2012 Mar 12;51(11):2632-5. doi: 10.1002/anie.201106776. Epub 2012 Feb 3.
Abstract
Breaking through the stoichiometry barrier: as the diameter of silver particles is decreased below a critical size of 32 nm, the molar ratio of aqueous Hg(II) to Ag(0) drastically increases beyond the conventional Hg/Ag ratio of 0.5:1, leading to hyperstoichiometry with a maximum ratio of 1.125:1. Therein, around 99% of the initial silver is retained to rapidly form a solid amalgam with reduced mercury.
摘要
突破化学计量比限制
当银颗粒的直径减小至 32nm 以下的临界尺寸时，水合汞(II)与银(0)的摩尔比急剧增加，超过了传统的 Hg/Ag 比 0.5:1，导致超化学计量比达到 1.125:1 的最大值。在此过程中，约 99%的初始银被保留下来，与汞迅速形成固体汞齐。
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