Increasing the diameter of vertically aligned, hexagonally ordered pores in mesoporous silica thin films
Increasing the diameter of vertically aligned, hexagonally ordered pores in mesoporous silica thin films
The variation in pore size in mesoporous films produced by electrochemically assisted self-assembly (EASA) with the surfactant chain length is described. EASA produces a hexagonal array of pores perpendicular to the substrate surface by using an applied potential to organize cationic surfactants and the resultant current to drive condensation in a silica sol. Here, we show that a range of pore sizes between 2 and 5 nm in diameter is available with surfactants of the form [Me
3NC
nH
2n+1]Br, with alkyl chain lengths between C
14 and C
24. The film quality, pore order, pore size, and pore accessibility are probed with a range of techniques.
2257-2266
Mohamed, Nabil, Ahmed - Nooh
9439a885-cedb-4f77-b522-d22540996247
Han, Yisong
9307e57c-85b5-461d-93c5-9c3081224c02
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Houghton, Anthony
f9689e78-59e0-43f5-99b7-2ce66b94baa4
Hunter-Sellars, Elwin
f24a9f8a-e272-4d49-9849-cdaa716279d3
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Williams, Daryl
4c1c5f69-24be-47d5-b9a2-fc5aea5308e8
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
22 February 2022
Mohamed, Nabil, Ahmed - Nooh
9439a885-cedb-4f77-b522-d22540996247
Han, Yisong
9307e57c-85b5-461d-93c5-9c3081224c02
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Houghton, Anthony
f9689e78-59e0-43f5-99b7-2ce66b94baa4
Hunter-Sellars, Elwin
f24a9f8a-e272-4d49-9849-cdaa716279d3
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Williams, Daryl
4c1c5f69-24be-47d5-b9a2-fc5aea5308e8
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
Mohamed, Nabil, Ahmed - Nooh, Han, Yisong, Hector, Andrew L., Houghton, Anthony, Hunter-Sellars, Elwin, Reid, Gillian, Williams, Daryl and Zhang, Wenjian
(2022)
Increasing the diameter of vertically aligned, hexagonally ordered pores in mesoporous silica thin films.
Langmuir, 38 (7), .
(doi:10.1021/acs.langmuir.1c02854).
Abstract
The variation in pore size in mesoporous films produced by electrochemically assisted self-assembly (EASA) with the surfactant chain length is described. EASA produces a hexagonal array of pores perpendicular to the substrate surface by using an applied potential to organize cationic surfactants and the resultant current to drive condensation in a silica sol. Here, we show that a range of pore sizes between 2 and 5 nm in diameter is available with surfactants of the form [Me
3NC
nH
2n+1]Br, with alkyl chain lengths between C
14 and C
24. The film quality, pore order, pore size, and pore accessibility are probed with a range of techniques.
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Accepted/In Press date: 25 January 2022
e-pub ahead of print date: 8 February 2022
Published date: 22 February 2022
Additional Information:
Funding Information:
This work was carried out under the Advanced Devices by ElectroPlaTing EPSRC program grant (EP/N035437/1). The authors also thank EPSRC for funding the Smartlab diffractometer under EP/K00509X/1 and EP/K009877/1. The authors would like to thank Ziyou Zhang for his contribution to the porosimetry measurements, Richard Beanland for his guidance in TEM analysis, and Phil Bartlett for helping with the electrochemical analysis. The raw data associated with figures in this manuscript and the Supporting Information can be found at http://DOI:10.5258/SOTON/D2080 .
Publisher Copyright:
© 2022 American Chemical Society
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Local EPrints ID: 454700
URI: http://eprints.soton.ac.uk/id/eprint/454700
ISSN: 0743-7463
PURE UUID: a2d7fafa-7c1d-4bbb-8a75-d91c44befd15
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Date deposited: 21 Feb 2022 17:39
Last modified: 17 Mar 2024 07:06
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Author:
Nabil, Ahmed - Nooh Mohamed
Author:
Yisong Han
Author:
Anthony Houghton
Author:
Elwin Hunter-Sellars
Author:
Daryl Williams
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