Fabrication of nanoporous gold thin films on glass substrates for amperometric sensing of aniline

Title
Fabrication of nanoporous gold thin films on glass substrates for amperometric sensing of aniline
Authors
김상훈쭝 히에우 쩐이건우신형준
Keywords
Nanoporous gold; Heat-treatment; Sensor; Thin films
Issue Date
2017-08
Publisher
Journal of alloys and compounds
Citation
VOL 713-137
Abstract
Nanoporous gold (NP-Au) thin films were fabricated on glass substrates by dealloying an Au– Si alloy produced by co-deposition of Au and Si. Si was selectively removed from the Au– Si alloy with potassium hydroxide solution, which is a very simple and safe dealloying method. We investigated the optimum conditions for sputtering and dealloying to obtain stable and durable nanoporous films. The NP-Au films were used as a working electrode for amperometric sensing of aniline in water and exhibited a wider sensing range and lower detection limit than NP-Au electrodes fabricated on Si substrates with HF etchant. The larger surface roughness factor of the NP-Au sensor is responsible for the enhanced sensing performance.
URI
http://pubs.kist.re.kr/handle/201004/65790
ISSN
0925-8388
Appears in Collections:
KIST Publication > Article
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