Templated electrodeposition as a scalable and surfactant-free approach to the synthesis of Au nanoparticles with tunable aspect ratios
Abbondanza, Giuseppe LU ; Larsson, Alfred LU ; Linpé, Weronica LU ; Hetherington, Crispin LU
; Carlá, Francesco
; Lundgren, Edvin
LU
and Harlow, Gary S.
LU
(2022)
In Nanoscale Advances
4(11).
p.2452-2467
- Abstract
A high-throughput method for the fabrication of ordered arrays of Au nanoparticles is presented. It is based on pulsed electrodeposition into porous anodic alumina templates. In contrast to many synthesis routes, it is cyanide-free, prior separation of the alumina template from the aluminium substrate is not required, and the use of contaminating surfactants/capping agents often found in colloidal synthesis is avoided. The aspect ratio of the nanoparticles can also be tuned by selecting an appropriate electrodeposition time. We show how to fabricate arrays of nanoparticles, both with branched bases and with hemispherical bases. Furthermore, we compare the different morphologies produced with electron microscopies and grazing-incidence... (More)
A high-throughput method for the fabrication of ordered arrays of Au nanoparticles is presented. It is based on pulsed electrodeposition into porous anodic alumina templates. In contrast to many synthesis routes, it is cyanide-free, prior separation of the alumina template from the aluminium substrate is not required, and the use of contaminating surfactants/capping agents often found in colloidal synthesis is avoided. The aspect ratio of the nanoparticles can also be tuned by selecting an appropriate electrodeposition time. We show how to fabricate arrays of nanoparticles, both with branched bases and with hemispherical bases. Furthermore, we compare the different morphologies produced with electron microscopies and grazing-incidence synchrotron X-ray diffraction. We find the nanoparticles are polycrystalline in nature and are compressively strained perpendicular to the direction of growth, and expansively strained along the direction of growth. We discuss how this can produce dislocations and twinning defects that could be beneficial for catalysis.
(Less)
- author
- Abbondanza, Giuseppe
LU
; Larsson, Alfred
LU
; Linpé, Weronica
LU
; Hetherington, Crispin
LU
; Carlá, Francesco
; Lundgren, Edvin
LU
and Harlow, Gary S.
LU
- organization
- publishing date
- 2022-05-09
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nanoscale Advances
- volume
- 4
- issue
- 11
- pages
- 16 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85132317148
- pmid:36134135
- ISSN
- 2516-0230
- DOI
- 10.1039/d2na00188h
- language
- English
- LU publication?
- yes
- id
- 7ec478a7-e3be-4a97-aea1-3693be524666
- date added to LUP
- 2022-09-23 09:51:35
- date last changed
- 2024-06-25 02:28:40
@article{7ec478a7-e3be-4a97-aea1-3693be524666,
abstract = {{<p>A high-throughput method for the fabrication of ordered arrays of Au nanoparticles is presented. It is based on pulsed electrodeposition into porous anodic alumina templates. In contrast to many synthesis routes, it is cyanide-free, prior separation of the alumina template from the aluminium substrate is not required, and the use of contaminating surfactants/capping agents often found in colloidal synthesis is avoided. The aspect ratio of the nanoparticles can also be tuned by selecting an appropriate electrodeposition time. We show how to fabricate arrays of nanoparticles, both with branched bases and with hemispherical bases. Furthermore, we compare the different morphologies produced with electron microscopies and grazing-incidence synchrotron X-ray diffraction. We find the nanoparticles are polycrystalline in nature and are compressively strained perpendicular to the direction of growth, and expansively strained along the direction of growth. We discuss how this can produce dislocations and twinning defects that could be beneficial for catalysis.</p>}},
author = {{Abbondanza, Giuseppe and Larsson, Alfred and Linpé, Weronica and Hetherington, Crispin and Carlá, Francesco and Lundgren, Edvin and Harlow, Gary S.}},
issn = {{2516-0230}},
language = {{eng}},
month = {{05}},
number = {{11}},
pages = {{2452--2467}},
publisher = {{Royal Society of Chemistry}},
series = {{Nanoscale Advances}},
title = {{Templated electrodeposition as a scalable and surfactant-free approach to the synthesis of Au nanoparticles with tunable aspect ratios}},
url = {{http://dx.doi.org/10.1039/d2na00188h}},
doi = {{10.1039/d2na00188h}},
volume = {{4}},
year = {{2022}},
}