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AC-assisted deposition of aggregate free silica films with vertical pore structure

AC-assisted deposition of aggregate free silica films with vertical pore structure
AC-assisted deposition of aggregate free silica films with vertical pore structure
Silica thin films with vertical nanopores are useful to control access to electrode surfaces and may act as templates for growth of nanomaterials. The most effective method to produce these films, electrochemically assisted surfactant assembly, also produces aggregates of silica particles. This paper shows that growth with an AC signal superimposed onto the potential avoids the aggregates and only very small numbers of single particles are found. This finding is linked to better control of the diffusion field of hydroxide ions that are responsible for particle growth. The resultant films are smooth, with very well-ordered hexagonal pore structures.
2040-3364
5404-5411
Moehl, Gilles, Ernest Heinrich Karl
c3f40572-28c6-4467-a118-502000132f8c
Nasir, Tauqir
afe6d658-cc69-4371-8ae6-d722e30352c8
Han, Yisong
f18c6da7-6694-48ca-92af-98d2e68485a8
Noori, Yasir
704d0b70-1ea6-4e00-92ce-cc2543087a09
Huang, Ruomeng
c6187811-ef2f-4437-8333-595c0d6ac978
Beanland, Richard
77643be6-0c38-4542-b05a-4ccc14efdc25
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Moehl, Gilles, Ernest Heinrich Karl
c3f40572-28c6-4467-a118-502000132f8c
Nasir, Tauqir
afe6d658-cc69-4371-8ae6-d722e30352c8
Han, Yisong
f18c6da7-6694-48ca-92af-98d2e68485a8
Noori, Yasir
704d0b70-1ea6-4e00-92ce-cc2543087a09
Huang, Ruomeng
c6187811-ef2f-4437-8333-595c0d6ac978
Beanland, Richard
77643be6-0c38-4542-b05a-4ccc14efdc25
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5

Moehl, Gilles, Ernest Heinrich Karl, Nasir, Tauqir, Han, Yisong, Noori, Yasir, Huang, Ruomeng, Beanland, Richard, Bartlett, Philip N. and Hector, Andrew L. (2022) AC-assisted deposition of aggregate free silica films with vertical pore structure. Nanoscale, 14 (14), 5404-5411. (doi:10.1039/D1NR08253A).

Record type: Article

Abstract

Silica thin films with vertical nanopores are useful to control access to electrode surfaces and may act as templates for growth of nanomaterials. The most effective method to produce these films, electrochemically assisted surfactant assembly, also produces aggregates of silica particles. This paper shows that growth with an AC signal superimposed onto the potential avoids the aggregates and only very small numbers of single particles are found. This finding is linked to better control of the diffusion field of hydroxide ions that are responsible for particle growth. The resultant films are smooth, with very well-ordered hexagonal pore structures.

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d1nr08253a - Accepted Manuscript
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More information

Accepted/In Press date: 15 March 2022
e-pub ahead of print date: 16 March 2022
Published date: 16 March 2022

Identifiers

Local EPrints ID: 456155
URI: http://eprints.soton.ac.uk/id/eprint/456155
ISSN: 2040-3364
PURE UUID: 330a4007-9edd-4338-8c13-e69ce7c793e4
ORCID for Gilles, Ernest Heinrich Karl Moehl: ORCID iD orcid.org/0000-0003-4910-3601
ORCID for Tauqir Nasir: ORCID iD orcid.org/0000-0003-0457-766X
ORCID for Yasir Noori: ORCID iD orcid.org/0000-0001-5285-8779
ORCID for Ruomeng Huang: ORCID iD orcid.org/0000-0003-1185-635X
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900
ORCID for Andrew L. Hector: ORCID iD orcid.org/0000-0002-9964-2163

Catalogue record

Date deposited: 26 Apr 2022 15:07
Last modified: 10 May 2022 01:59

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Contributors

Author: Gilles, Ernest Heinrich Karl Moehl ORCID iD
Author: Tauqir Nasir ORCID iD
Author: Yisong Han
Author: Yasir Noori ORCID iD
Author: Ruomeng Huang ORCID iD
Author: Richard Beanland

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