کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5008664 | 1462037 | 2018 | 7 صفحه PDF | دانلود رایگان |
- A new method to synthesize the functional hybrid material composed of reduced graphene oxide and Au/Ag core-shell nanorods used as SERS sensor.
- This facile and powerful SERS sensor detected rhodamine-6G (R6G) with an enhancement factor as high as â¼Â 5.03 Ã 108.
- RGO-Au@AgNRs can also be used to monitor the pesticide thiram at low level â¼10â7Â M and was with relative standard deviation (RSD) is about 7.5%, 17.3% and 15.1% at 561Â cmâ1, 962Â cmâ1 and 1389Â cmâ1, respectively.
- RGO-based is flexible, and its size and shape can be adjusted depending on the requirements.
This work demonstrated a new method to synthesize the functional hybrid material composed of reduced graphene oxide and Au/Ag core-shell nanorods (rGO-Au@AgNRs). The hybrid material can detect rhodamine-6G (R6G) with an enhancement factor (EF) up to (5.0 ± 0.2) Ã 108, 4 fold higher than that of the rGO-AuNRs. Comparing with SERS-active substrate Au@Ag (without rGO), the Raman intensity of R6G on the rGO-Au@AgNRs has significant enhancement, especially at the Raman peak of 611 cmâ1, around 17 times. We also use rGO-Au@AgNRs to monitor the pesticide thiram at a low level â¼10â7 M and RSD 7.5% at the 561 cmâ1. The limit of detection (LOD) of thiram using rGO-Au@AgNRs was low to 5.12 Ã 10â3 μM, which suggested that the rGO-Au@AgNRs has potential applications in the detection of environment pollutants etc.
Journal: Sensors and Actuators B: Chemical - Volume 254, January 2018, Pages 182-188