Silver Voyage from Macro- to Nanoworld.
Silver Voyage from Macro- to Nanoworld.
复制标题
从宏观世界到纳米世界的银色航行。
DOI：
10.1021/ed1003405
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发表时间：
2010
影响因子：
3
通讯作者：
R. Zbořil
中科院分区：
文献类型：
--
作者：
J. Soukupová;L. Kvítek;Martina Kratochvílová;A. Panacek;R. Prucek;R. Zbořil
纳米科学和纳米技术目前代表了科学和技术的最迅速发展的领域之一;因此，纳米科学和纳米技术的基本原理应该由大学甚至高中学生以及科学界的成员理解。银作为这些领域的先驱材料，可以被认为是从宏观到微观世界揭示物质基本性质变化的适当指南。我们提出了一组实验，提供银镜（宏观银），亚微观“黑色”胶体颗粒（<465 nm），也纳米级“橙子”颗粒（40 nm）的制备。有趣的是，所有这些形式的银都可以通过完善的Tollens反应制备，只需改变反应组分的初始浓度。宏观银颗粒可由于其典型的金属光泽而被检测到。胶体和纳米银粒子的制备。
Nanoscience and nanotechnology currently represent one of the most rapidly developing fields of science and technology; therefore, the fundamental principles of nanoscience and nanotechnology should be understood by college and even high school students as well as by members of scientific communities. Silver, as the pioneer material in these fields, can be considered the appropriate guide on the voyage from the macro- to the nanoworld revealing the changes in fundamental properties of matter. We suggest a set of experiments that offer the preparation of silver mirror (macroscopic silver), submicroscopic “black” colloidal particles (<465 nm), and also nanoscopic “orange” particles (40 nm). Interestingly, all of these forms of silver can be prepared via the well-established Tollens reaction using just the variation in the initial concentrations of the reaction components. The macroscopic silver particles can be detected as a result of their typical metal shine. The colloidal and the nanoscopic silver partic...