Harika Villa Krishna, Kumar Vijay Bhooshan, Gedanken Aharon
Bar-Ilan Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel.
Bar-Ilan Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel.
Ultrason Sonochem. 2018 Jan;40(Pt A):157-165. doi: 10.1016/j.ultsonch.2017.07.008. Epub 2017 Jul 6.
Metallic mercury has always attracted much attention in various fields because of its unique characteristic of forming amalgams. Here, different phases of pure crystalline Hg-Ag amalgam microspheres are synthesized by ultrasonically reacting liquid mercury with an aqueous solution of silver nitrate. Sonicating different molar ratios of liquid metallic Hg with AgNO results in the formation of pure crystalline phases of solid silver amalgams with uniform morphology. The resulting Hg-Ag amalgams from various compositions after sonication are physically characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS) and Differential Scanning Calorimetry (DSC). The XRD of the amalgams obtained from the molar ratios of Hg:Ag (1:1.5) and Hg:Ag (1.5:1 and 2:1) match the Schachnerite and Moschellandbergite phases, respectively, whereas the Hg-Ag amalgam prepared from a 1:1Hg:Ag molar ratio results in a mixture of the Schachnerite and Moschellandbergite phases. The obtained amalgam microspheres are between 6 and 10µm in size. The detailed thermal and chemical behaviour of the Ag-Hg systems is also investigated.
金属汞因其形成汞齐的独特特性，在各个领域一直备受关注。在此，通过将液态汞与硝酸银水溶液进行超声反应，合成了不同相的纯晶体Hg-Ag汞齐微球。对液态金属汞与硝酸银不同摩尔比进行超声处理，可形成形态均匀的固态银汞齐纯晶相。超声处理后，对各种组成的所得Hg-Ag汞齐进行了X射线衍射（XRD）、扫描电子显微镜（SEM）、能量色散X射线光谱（EDS）和差示扫描量热法（DSC）等物理表征。从Hg:Ag摩尔比为（1:1.5）以及Hg:Ag（1.5:1和2:1）得到的汞齐的XRD分别与硫汞银矿和斜方硫汞银矿相匹配，而由Hg:Ag摩尔比为1:1制备的Hg-Ag汞齐则得到硫汞银矿和斜方硫汞银矿相的混合物。所得汞齐微球尺寸在6至10微米之间。还研究了Ag-Hg体系详细的热行为和化学行为。
