N,N-Dimethylformamide-Assisted Shape Evolution of Highly Uniform and Shape-Pure Colloidal Copper Nanocrystals
- Authors
- Lee, D.W.; Woo, H.Y.; Lee, D.H.D.; Jung, M.-C.; Lee, D.; Lee, M.; Kim, J.B.; Chae, J.Y.; Han, M.J.; Paik, Taejong
- Issue Date
- Oct-2021
- Publisher
- John Wiley and Sons Inc
- Keywords
- copper; electrocatalysts; methanol oxidation; plasmonics; shape control
- Citation
- Small, v.17, no.40
- Journal Title
- Small
- Volume
- 17
- Number
- 40
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/50152
- DOI
- 10.1002/smll.202103302
- ISSN
- 1613-6810
1613-6829
- Abstract
- In this paper, the N,N-dimethylformamide (DMF)-assisted shape evolution of highly uniform and shape-pure copper nanocrystals (Cu NCs) is presented for the first time. Colloidal Cu NCs are synthesized via the disproportionation reaction of copper (I) bromide in the presence of a non-polar solvent mixture. It is observed that the shape of Cu NCs is systematically controlled by the addition of different amounts of DMF to the reaction mixture in high-temperature reaction conditions while maintaining a high size uniformity and shape purity. With increasing amount of DMF in the reaction mixture, the morphology of the Cu NCs change from a cube enclosed by six {100} facets, to a sphere with mixed surface facets, and finally, to an octahedron enclosed by eight {111} facets. The origin of this shape evolution is understood via first-principles density functional theory calculations, which allows the study of the change in the relative surface stability according to surface-coordinating adsorbates. Further, the shape-dependent plasmonic properties are systematically investigated with highly uniform and ligand-exchanged colloidal Cu NCs dispersed in acetonitrile. Finally, the facet-dependent electrocatalytic activities of the shape-controlled Cu NCs are investigated to reveal the activities of the highly uniform and shape-pure Cu NCs in the methanol oxidation reaction. © 2021 Wiley-VCH GmbH
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of ICT Engineering > School of Integrative Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/50152)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.