Electrochemical Fabrication of Nanostructures on Porous Silicon for Biochemical Sensing Platforms
- Authors
- Ko, Euna; Hwang, Joonki; Kim, Ji Hye; Lee, Joo Heon; Lee, Sung Hwan; Tran, Van-Khue; Chung, Woo Sung; Park, Chan Ho; Choo, Jaebum; Seong, Gi Hun
- Issue Date
- Jun-2016
- Publisher
- JAPAN SOC ANALYTICAL CHEMISTRY
- Keywords
- Porous silicon; electrochemical deposition; nanoparticles; electrochemical sensor; SERS substrate
- Citation
- ANALYTICAL SCIENCES, v.32, no.6, pp 681 - 686
- Pages
- 6
- Journal Title
- ANALYTICAL SCIENCES
- Volume
- 32
- Number
- 6
- Start Page
- 681
- End Page
- 686
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/45679
- DOI
- 10.2116/analsci.32.681
- ISSN
- 0910-6340
1348-2246
- Abstract
- We present a method for the electrochemical patterning of gold nanoparticles (AuNPs) or silver nanoparticles (AgNPs) on porous silicon, and explore their applications in: (1) the quantitative analysis of hydroxylamine as a chemical sensing electrode and (2) as a highly sensitive surface-enhanced Raman spectroscopy (SERS) substrate for Rhodamine 6G. For hydroxylamine detection, AuNPs-porous silicon can enhance the electrochemical oxidation of hydroxylamine The current changed linearly for concentrations ranging from 100 mu M to 1.32 mM (R-2 = 0.995), and the detection limit was determined to be as low as 55 mu M. When used as SERS substrates, these materials also showed that nanoparticles decorated on porous silicon substrates have more SERS hot spots than those decorated on crystalline silicon substrates, resulting in a larger SERS signal. Moreover, AgNPs-porous silicon provided five-times higher signal compared to AuNPs-porous silicon. From these results, we expect that nanoparticles decorated on porous silicon substrates can be used in various types of biochemical sensing platforms.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/45679)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.