Issue 43, 2023
From the journal:

RSC Advances

Synthesis of multifunctional amorphous metallic shell on crystalline metallic nanoparticles

Abhinav Parakh,†ab   Mehrdad Toussi Kiani,†ac   Emily Lindgren,ad   Anabelle Colmenares,e   Andrew Curtis Lee,a   Yuri Suzukidf  and  Xun Wendy Gu*e  

* Corresponding authors

a Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA

b Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

c Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14850, USA

d Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA 94305, USA

e Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA
E-mail: xwgu@stanford.edu

f Department of Applied Physics, Stanford University, Stanford, CA 94305, USA

Abstract

Colloidal nanoparticles can be coated with a conformal shell to form multifunctional nanoparticles. For instance, plasmonic, magnetic, and catalytic properties, chemical stability and biocompatibility can be mixed and matched. Here, a facile synthesis for depositing metal boride amorphous coatings on colloidal metallic nanocrystals is introduced. The synthesis is independent of core size, shape, and composition. We have found that the shell synthesis is limited to nanoparticles capped with short molecular weight and low binding energy ligands, and does not work with polyvinylpyrrolidone (PVP)-coated Ag nanoparticles or thiol-coated Au nanoparticles. Shell thickness can be as thin as 3 nm with no apparent pinholes. High pressure studies show that the coatings are highly resistant to crystallization and are strongly bonded to the crystalline core. By choosing either CoB or NiB for the coating, the composite nanoparticles can be either ferromagnetic or paramagnetic at room temperature, respectively.

Graphical abstract: Synthesis of multifunctional amorphous metallic shell on crystalline metallic nanoparticles

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/D3RA06093D
Article type
Paper
Submitted
07 Sep 2023
Accepted
25 Sep 2023
First published
18 Oct 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 30491-30498

Permissions

Request permissions

Synthesis of multifunctional amorphous metallic shell on crystalline metallic nanoparticles

A. Parakh, M. T. Kiani, E. Lindgren, A. Colmenares, A. C. Lee, Y. Suzuki and X. W. Gu, RSC Adv., 2023, 13, 30491 DOI: 10.1039/D3RA06093D

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements