New deeply coloured 18-K gold materials built by nanotechnologies

IF 2.2 4区 工程技术 Q2 Chemistry Gold Bulletin Pub Date : 2014-12-12 DOI:10.1007/s13404-014-0154-9
Anne Serin, Mathieu Bourlion, Frédéric Diologent, René Ziegenhagen, Vincent Germain
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Abstract

A new way to elaborate coloured carat gold materials has been developed. Instead of using traditional metallurgy route, we built a new 18-K bulk material using nanostructured gold particles. The resulting colour is the consequence of a well-known property of gold nanoparticles: the surface plasmon resonance effect. Depending on the chemical environment around the nanoparticles, their shape and size, it is possible to tune the colour of gold. Thanks to this property, it is possible to obtain a large panel of colours not achievable via conventional alloying route. Here, we focus on one hybrid nanostructured material: Au-SiO2. The development of a new synthesis route enables us to obtain nanostructured micrometric powders that can then be pressed to obtain a bulk material. The resulting nanocomposites are characterized by means of energy-dispersive X-ray spectroscopy (EDX), fire assay, TEM and spectrophotocolorimetry. All these characterizations have shown that our composites exhibit a gold content superior to 75?% by weight and have a much more vivid colour than classical coloured gold. The new composites are therefore deeply coloured 18-K materials.

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纳米技术制造的新型深颜色18k金材料
开发了一种制作彩色克拉金材料的新方法。我们利用纳米结构金颗粒构建了一种新的18k块状材料,取代了传统的冶金方法。所产生的颜色是金纳米粒子一个众所周知的特性的结果:表面等离子体共振效应。根据纳米粒子周围的化学环境、它们的形状和大小,可以调整黄金的颜色。由于这一特性,可以获得通过传统合金化路线无法获得的大面板颜色。在这里,我们关注的是一种杂化纳米结构材料:Au-SiO2。新合成路线的发展使我们能够获得纳米结构的微米粉末,然后可以压制以获得块状材料。通过能量色散x射线光谱(EDX)、火焰分析、透射电镜(TEM)和分光光度比色法对所得纳米复合材料进行了表征。所有这些表征都表明,我们的复合材料的含金量优于75?重量%,颜色比传统黄金更鲜艳。因此,新的复合材料是深颜色的18k材料。
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来源期刊
Gold Bulletin
Gold Bulletin 工程技术-材料科学:综合
CiteScore
3.30
自引率
4.50%
发文量
0
审稿时长
3 months
期刊介绍: Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.
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