Trace detection of herbicides by SERS technique, using SERS-active substrates fabricated from different silver nanostructures deposited on silicon
| Autor: | Ngoc Minh Kieu, Thi Thuy Luong, Truc Quynh Ngan Luong, Tran Cao Dao, Ngoc Hai Nguyen, Van Vu Le, Tuan Anh Cao |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
inorganic chemicals
Materials science Nanostructure Silicon Flat surface technology industry and agriculture chemistry.chemical_element Nanotechnology Substrate (electronics) Industrial and Manufacturing Engineering Silver nanoparticle symbols.namesake chemistry symbols General Materials Science Wafer Electrical and Electronic Engineering Silicon nanowires Raman scattering |
| Zdroj: | Advances in Natural Sciences: Nanoscience and Nanotechnology. 6:035012 |
| ISSN: | 2043-6262 |
| DOI: | 10.1088/2043-6262/6/3/035012 |
| Popis: | In this report we present the initial results of the use of different silver nanostructures deposited on silicon for trace detection of paraquat (a commonly used herbicide) using the surface-enhanced Raman scattering (SERS) effect. More specifically, the SERS-active substrates were fabricated from silver nanoparticles (AgNPs) deposited onto the flat surface of a silicon wafer (AgNPs@Si substrate), as well as on the surface of an obliquely aligned silicon nanowire (SiNW) array (AgNPs@SiNWs substrate), and from silver nanodendrites (AgNDs) deposited onto the flat surface of a silicon wafer (AgNDs@Si substrate). Results showed that with the change of the structure of the SERS-active substrate, higher levels of SERS enhancement have been achieved. Specifically, with the fabricated AgNDs@Si substrate, paraquat concentration as low as 1 ppm can be detected. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|