烷氧基镁纳米颗粒在配体交换上的合成烷氧基镁纳米线,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 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.)

烷氧基镁纳米颗粒在配体交换上的合成烷氧基镁纳米线
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-03-14 , DOI: 10.1021/acsami.1c21757
Shunrui Luo _{1,

2} , Kostiantyn Turcheniuk ₂ , Lihua Chen ₂ , Ah-Young Song ₂ , Wenqiang Hu ₂ , Xiaolei Ren _{2,

3} , Zifei Sun ₄ , Rampi Ramprasad ₂ , Gleb Yushin ₂

Affiliation

我们报告了使用简单的烷氧基配体交换反应，然后在正丙醇中缩聚，从乙醇镁纳米粒子制备正丙醇镁纳米线 (NWs)的新合成途径。为了揭示金属醇盐家族中的形态-结构相关性，我们采用了一系列强大的最先进的表征技术。通过延时 SEM 显微照片证明了从纳米颗粒到纳米线的形态转变。傅里叶变换红外光谱 (FTIR) 和核磁共振光谱 (如¹ H NMR 和固态¹³ C 交叉极化 (CP)-MAS NMR) 说明了乙基被n取代-丙基与金属醇盐缩聚。我们还使用 NMR 光谱确定了产品的化学式。乙醇镁颗粒和正丙醇镁纳米线的晶体结构模拟提供了关于配体交换和 OH 基团比例的相关增加如何极大地增强醇镁键合并实现更高程度的配位聚合以促进形成和生长的见解正丙醇镁NWs。发现的合成方法可以扩展到制造具有各种形态的其他金属醇盐（纳米）结构。

"点击查看英文标题和摘要"

Synthesis of Mg Alkoxide Nanowires from Mg Alkoxide Nanoparticles upon Ligand Exchange

We report on a new synthesis pathway for Mg n-propoxide nanowires (NWs) from Mg ethoxide nanoparticles using a simple alkoxy ligand exchange reaction followed by condensation polymerization in n-propanol. In order to uncover the morphology–structure correlation in the metal alkoxide family, we employed a powerful range of state-of-the-art characterization techniques. The morphology transformation from nanoparticles to nanowires was demonstrated by time-lapse SEM micrographs. Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance spectroscopy (such as ¹H NMR and solid-state ¹³C cross-polarization (CP)-MAS NMR) illustrated the replacement of ethyl by n-propyl and metal alkoxide condensation polymerization. We identified chemical formulas of the products also using NMR spectroscopy. The crystal structure simulation of Mg ethoxide particles and Mg n-propoxide NWs provided insights on how the ligand exchange and the associated increase in the fraction of OH groups greatly enhanced Mg alkoxide bonding and enabled a higher degree of coordination polymerization to facilitate the formation and growth of the Mg n-propoxide NWs. The discovered synthesis method could be extended for the fabrication of other metal alkoxide (nano) structures with various morphologies.

更新日期：2022-03-14

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南