Abstract
A facile approach to fabricating a surface-enhanced Raman scattering (SERS)-active chip by integrating silver dendrites with copper substrate through a one-step process was explored. The structures of dendrites were synthesized and controlled by an AgNO3/PVP aqueous system, and the fabrication parameters amount of AgNO3/PVP and reaction time were systematically investigated. The optimized silver dendrites, closely aggregated on the surface of the copper chip, exhibited high SERS activity for detecting rhodamine 6G at a concentration as low as 3.2 × 10-11 M. Meanwhile, the prepared SERS-active chip displayed a high thermal stability and good reproducibility. Moreover, the potential application for analysis of polycyclic aromatic hydrocarbons was demonstrated by detection of fluoranthene at a low concentration of 4.5 × 10-10 M. This SERS-active chip prepared by the convenient and high-yield method would be a promising means for rapid detection under field conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 2931-2936 |
| Number of pages | 6 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 7 |
| Issue number | 4 |
| DOIs | |
| State | Published - 4 Feb 2015 |
| Externally published | Yes |
Keywords
- SERS
- copper substrate
- detection chip
- silver dendrites