Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, USA.
J Am Chem Soc. 2011 May 4;133(17):6509-12. doi: 10.1021/ja200012e. Epub 2011 Apr 12.
A general, one-pot, single-step method for producing colloidal silver chalcogenide (Ag(2)E; E = Se, S, Te) nanocrystals is presented, with an emphasis on Ag(2)Se. The method avoids exotic chemicals, high temperatures, and high pressures and requires only a few minutes of reaction time. While Ag(2)S and Ag(2)Te are formed in their low-temperature monoclinic phases, Ag(2)Se is obtained in a metastable tetragonal phase not observed in the bulk.
本文提出了一种通用的、一锅法、单步制备胶体银硫属化物（Ag(2)E；E = Se、S、Te）纳米晶体的方法，重点介绍了 Ag(2)Se。该方法避免了使用奇特的化学物质、高温和高压，仅需几分钟的反应时间。虽然 Ag(2)S 和 Ag(2)Te 以低温单斜相形成，但 Ag(2)Se 则以体相中未观察到的亚稳四方相获得。
