Nickel platinum (NixPt1−x) nanoalloy monodisperse particles without the core–shell structure by colloidal synthesis,Nanoscale Advances

当前位置： X-MOL 学术 › Nanoscale Adv. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Nickel platinum (NixPt1−x) nanoalloy monodisperse particles without the core–shell structure by colloidal synthesis
Nanoscale Advances ( IF 4.6 ) Pub Date : 2020-07-09 , DOI: 10.1039/d0na00450b
Cora Moreira Da Silva ₁ , Armelle Girard _{1,

2} , Maxime Dufond ₁ , Frédéric Fossard ₁ , Amandine Andrieux-Ledier ₃ , Vincent Huc ₄ , Annick Loiseau ₁

Affiliation

We report a new and versatile colloidal route towards the synthesis of nanoalloys with controlled size and chemical composition in the solid solution phase (without phase segregation such as core–shell structure or Janus structure) or chemical ordering. The principle of the procedure is based on the correlation between the oxidation–reduction potential of metal cations present in the precursors and the required synthesis temperature to nucleate particles without phase segregation. The procedure is demonstrated via the synthesis of Face Centered Cubic (FCC) Ni_xPt_1−x nanoparticles, which was elaborated by the co-reduction of nickel(II) acetylacetonate and platinum(II) acetylacetonate with 1,2-hexadecanediol in benzyl ether, using oleylamine and oleic acid as surfactants. The chemical composition and solid solution FCC structure of the nanoalloy are demonstrated by crosslinking imaging and chemical analysis using transmission electron microscopy and X-ray diffraction techniques. Whatever the chemical composition inspected, a systematic expansion of the lattice parameters is measured in relation to the respective bulk counterpart.

中文翻译：

通过胶体合成制备无核壳结构的镍铂（NixPt1−x）纳米合金单分散颗粒

我们报告了一种新的多功能胶体路线，用于合成固溶体相中具有受控尺寸和化学成分（没有相分离，如核壳结构或Janus结构）或化学排序的纳米合金。该程序的原理是基于前体中存在的金属阳离子的氧化还原电位与使颗粒成核而不发生相分离所需的合成温度之间的相关性。该过程通过面心立方 (FCC) Ni _x Pt _{1− x}纳米粒子的合成得到证明，该纳米粒子是通过乙酰丙酮镍 ( II ) 和乙酰丙酮铂 ( II ) 与 1,2-十六烷二醇在苄基中的共还原而制成的乙醚，使用油胺和油酸作为表面活性剂。使用透射电子显微镜和 X 射线衍射技术通过交联成像和化学分析证明了纳米合金的化学成分和固溶体 FCC 结构。无论检查的化学成分是什么，都会测量相对于相应块体对应物的晶格参数的系统扩展。

更新日期：2020-09-16

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文