Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 4, Pages 2931-2936Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am508403k
Keywords
SERS; silver dendrites; detection chip; copper substrate
Funding
- Shanghai Municipal Natural Science Foundation [14ZR1409400, 14ZR1410800]
- National Science Fund for Distinguished Young Scholars [21125522]
- Shanghai Pujiang Program Grant of China [12JC1403500]
- Fundamental Research Funds for the Central Universities [WB1113005]
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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 x 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 x 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.
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