# Growth mechanism of star-shaped Au–Ag nanoparticles synthesized by ascorbic acid reduction and underpotential deposition

https://mdr.nims.go.jp/datasets/b5ae07c6-af45-42d4-b151-5a263cd1e934

## File

- [Growth mechanism of star-shaped Au-Ag nanoparticles_unmark.pdf](https://mdr.nims.go.jp/filesets/8d3c5ea0-8976-45eb-8595-613f6e9ec9ae/download) ([Detail](https://mdr.nims.go.jp/filesets/8d3c5ea0-8976-45eb-8595-613f6e9ec9ae.md))

## Id

b5ae07c6-af45-42d4-b151-5a263cd1e934

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-20T02:07:54.155694Z

## Updated at

2026-03-01T03:30:08.844213Z

## Published at

2026-03-01T00:37:26.317700Z

## Doi

https://doi.org/10.48505/nims.4684

## First published url

https://doi.org/10.1016/j.mtnano.2024.100468

## Date published

2024-03-01

## Recorded date published

2024-3

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Growth mechanism of star-shaped Au–Ag nanoparticles synthesized by ascorbic
    acid reduction and underpotential deposition
  title_type: original
  lang: en

## Description

- description: 'The growth mechanism by stabilizing certain facets of Au in spines
    by underpotential deposition of Ag was investigated. The nanoparticles were analyzed
    primarily by STEM and EDS. Analysis of spines on nanoparticles synthesized with
    an Au/Ag ratio of 18/4 revealed that approximately 1 nm of Ag was deposited on
    the topmost surface of Au, and the growth direction of spines was <200>. Underpotential
    deposition of Ag nanolayers on specific facets of the spines on nanoparticles
    was observed for the first time by elemental mapping and HAADF STEM tomography. '
  description_type: abstract
  lang: und

## Creator

- name: Yuta Aida
  role: author
- name: Yasuhiro Nakagawa
  role: author
- name: Tetsuo Kishi
  role: author
- name: Masaki Takeguchi
  role: author
  orcid: https://orcid.org/0000-0002-0282-6020
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Yoshihiro Nemoto
  role: author
  orcid: https://orcid.org/0000-0001-8547-4990
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Yasutaka Anraku
  role: author
- name: Toshiyuki Ikoma
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Star-shaped Au-Ag nanoparticles
  schema: not_defined
- subject: Growth mechanism
  schema: not_defined
- subject: underpotential deposition
  schema: not_defined
- subject: plasmonic nanoparticles
  schema: not_defined

## Rights

- description: "© 2024. Licensed under the Creative Commons https://creativecommons.org/licenses/by-nc-nd/4.0/."
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-03-01
end_date: 2026-03-02

## Journal

- title: Materials Today Nano
  issn: '25888420'
  volume: '25'
  article_number: '100468'

## Conference



## Related item



## Funding

- identifier: 23K11845
  funder_name: Japan Society for the Promotion of Science
- identifier: A-21-NM-0080
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: National Institute for Materials Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 8d3c5ea0-8976-45eb-8595-613f6e9ec9ae
  filename: Growth mechanism of star-shaped Au-Ag nanoparticles_unmark.pdf
  content_type: application/pdf
  size: 1310503
  md5: a1eb5f617f3709c8a018c9cc4963b3d0

## Thumbnail

fileset_id: 8d3c5ea0-8976-45eb-8595-613f6e9ec9ae
filename: Growth mechanism of star-shaped Au-Ag nanoparticles_unmark.pdf