Issue 14, 2023

Multimetallic post-synthetic modifications of copper selenide nanoparticles

Abstract

In this report, we investigate the addition of two metal cations, simultaneously and sequentially to Cu2−xSe nanoparticles. The metal combinations (Ag–Au, Ag–Pt, Hg–Au and Hg–Pt) are chosen such that one metal adds to the structure via cation exchange and the other adds to the structure via metal deposition when added individually to Cu2−xSe nanoparticles. Surprisingly, we find that for each metal combination, across all three synthesis routes, cation exchange and metal deposition products are obtained without deviation from the outcomes seen in the binary metal systems. However, within those outcomes the data show several types of heterogeneities in the morphologies formed including extent and composition of cation exchange products as well as the extent and composition of the metal deposited products. Taken together, these results suggest a hierarchical control for nanoheterostructure morphologies where the pathways of cation exchange or metal deposition in post-synthetic modification of Cu2−xSe exhibit relatively general outcomes as a function of metal, regardless of synthetic approach or metal combination. However, the detailed composition and interface populations of the resulting materials are more sensitive to both metal identities and synthetic procedure (e.g. order of reagent addition), suggesting that certain principles of metal chalcogenide post-synthetic modification are excitingly robust, while also revealing new avenues for both mechanistic discovery and structural control.

Graphical abstract: Multimetallic post-synthetic modifications of copper selenide nanoparticles

Supplementary files

Article information

Article type
Paper
Submitted
30 Jan. 2023
Accepted
01 Mrt. 2023
First published
09 Mrt. 2023

Nanoscale, 2023,15, 6655-6663

Author version available

Multimetallic post-synthetic modifications of copper selenide nanoparticles

R. Sen, T. M. Gordon, S. L. Millheim, J. H. Smith, X. Y. Gan and J. E. Millstone, Nanoscale, 2023, 15, 6655 DOI: 10.1039/D3NR00441D

To request permission to reproduce material from this article, 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 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