Development of nanoporous gold electrodes for electrochemical applications
(2011) In Microelectronic Engineering 88(8). p.2379-2382- Abstract
- In this work we have used simple microfabrication techniques and chemical de-alloying of co-sputtered AgAu alloys to create nanoporous gold (np-Au) electrodes. The physical properties of the np-Au electrodes were investigated using scanning electron microscopy with energy dispersive X-ray analysis, X-ray photo-electron spectroscopy and profilometer. The electrochemical performance of the np-Au electrodes was measured by cyclic voltammetry and electrochemical impedance spectroscopy. We have fabricated np-Au electrodes with pore sizes between 10 nm and 60 nm, directly related to the Ag:Au ratio. The electrochemical results reveal that np-Au electrodes have much lower impedance than the conventional Au electrodes, due to the significantly... (More)
- In this work we have used simple microfabrication techniques and chemical de-alloying of co-sputtered AgAu alloys to create nanoporous gold (np-Au) electrodes. The physical properties of the np-Au electrodes were investigated using scanning electron microscopy with energy dispersive X-ray analysis, X-ray photo-electron spectroscopy and profilometer. The electrochemical performance of the np-Au electrodes was measured by cyclic voltammetry and electrochemical impedance spectroscopy. We have fabricated np-Au electrodes with pore sizes between 10 nm and 60 nm, directly related to the Ag:Au ratio. The electrochemical results reveal that np-Au electrodes have much lower impedance than the conventional Au electrodes, due to the significantly higher surface area to volume ratio of np-Au. The np-Au electrodes made from Ag66Au34 and Ag60Au40 show more than 10-fold magnitude reduction in impedance compared to conventional Au electrodes. These results show that np-Au electrodes have a great potential for electrochemical applications. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3129911
- author
- Quan, Xueling ; Fischer, Lee M. ; Boisen, Anja and Tenje, Maria LU
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Nanoporous gold, Electrochemistry, Cyclic voltammetry, Electrochemical impedance spectroscopy
- in
- Microelectronic Engineering
- volume
- 88
- issue
- 8
- pages
- 2379 - 2382
- publisher
- Elsevier
- external identifiers
-
- scopus:79960036994
- ISSN
- 1873-5568
- DOI
- 10.1016/j.mee.2010.12.121
- language
- English
- LU publication?
- no
- id
- 4391841e-f49e-458f-a83e-10e94cb6be67 (old id 3129911)
- date added to LUP
- 2016-04-01 10:58:46
- date last changed
- 2022-04-12 19:31:03
@article{4391841e-f49e-458f-a83e-10e94cb6be67,
abstract = {{In this work we have used simple microfabrication techniques and chemical de-alloying of co-sputtered AgAu alloys to create nanoporous gold (np-Au) electrodes. The physical properties of the np-Au electrodes were investigated using scanning electron microscopy with energy dispersive X-ray analysis, X-ray photo-electron spectroscopy and profilometer. The electrochemical performance of the np-Au electrodes was measured by cyclic voltammetry and electrochemical impedance spectroscopy. We have fabricated np-Au electrodes with pore sizes between 10 nm and 60 nm, directly related to the Ag:Au ratio. The electrochemical results reveal that np-Au electrodes have much lower impedance than the conventional Au electrodes, due to the significantly higher surface area to volume ratio of np-Au. The np-Au electrodes made from Ag66Au34 and Ag60Au40 show more than 10-fold magnitude reduction in impedance compared to conventional Au electrodes. These results show that np-Au electrodes have a great potential for electrochemical applications.}},
author = {{Quan, Xueling and Fischer, Lee M. and Boisen, Anja and Tenje, Maria}},
issn = {{1873-5568}},
keywords = {{Nanoporous gold; Electrochemistry; Cyclic voltammetry; Electrochemical impedance spectroscopy}},
language = {{eng}},
number = {{8}},
pages = {{2379--2382}},
publisher = {{Elsevier}},
series = {{Microelectronic Engineering}},
title = {{Development of nanoporous gold electrodes for electrochemical applications}},
url = {{http://dx.doi.org/10.1016/j.mee.2010.12.121}},
doi = {{10.1016/j.mee.2010.12.121}},
volume = {{88}},
year = {{2011}},
}