Demonstrating the Many Possible Colors of Gold-Supported Solid Nanoparticles
Demonstrating the Many Possible Colors of Gold-Supported Solid Nanoparticles
复制标题
展示金支撑的固体纳米颗粒的多种可能颜色
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Chunli Xu
中科院分区：
文献类型：
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作者：
Xiaoxiao Zhang;Zhen Wang;Chunli Xu
通过展示金纳米粒子的几种颜色，从他们的大小依赖的光学特性，介绍纳米技术的主题提供了一个简单的，原始的，吸引人的方式来吸引学生在纳米技术。在这个课堂演示中，通过将金纳米颗粒沉积在白色固体载体上，即TiO 2、Mg（OH）2、CaCO 3、Al 2 O 3和MgO上，来制备固体金纳米颗粒。通过调节载体的类型或金（III）溶液的浓度来改变金纳米颗粒的颜色。金纳米颗粒呈现出许多不同的颜色，包括紫色、粉红色、灰色、棕色、暗红色和红色。通常，准备工作可以在不到1小时内完成，这使得这是一个可行的课堂演示。
Introducing nanotechnology topics by demonstrating several colors of gold nanoparticles resulting from their size-dependent optical properties provides an easy, original, and appealing way to engage students in nanotechnology. In this classroom demonstration, solid gold nanoparticles were prepared by depositing gold nanoparticles on white solid supports, namely, TiO2, Mg(OH)2, CaCO3, Al2O3, and MgO. The color of the gold nanoparticles was changed by adjusting the type of supports or the concentrations of gold(III) solution. The gold nanoparticles exhibited many different colors, including purple, pink, gray, brown, dark red, and red. Typically, the preparations can be completed in less than 1 h, which makes this a feasible classroom demonstration.