Journal
RSC ADVANCES
Volume 5, Issue 115, Pages 94849-94854Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra18195j
Keywords
-
Categories
Funding
- Chinese Academy of Science for Hundred Talents Program
- Chinese Central Government for Thousand Young Talents Program
- Natural Science Foundation of China [21404110, 51473179, 51573203]
- Ningbo Science and Technology Bureau [2014B82010, 2015C110031]
- Technology Foundation for Selected Overseas Chinese Scholar, Ministry of Personnel of China
- Open Project Program of Key Lab of Smart Drug Delivery (Fudan University), Ministry of Education, China [SDD2015-01]
- School of Pharmacy, Fudan University
Ask authors/readers for more resources
Bimetallic nanocatalysts often display enhanced physical and chemical properties compared to those of their monometallic counterparts. Herein, we introduce a simple method to fabricate an island like array of tiny Ag nanoparticles bounded on triangular Au nanoplates as the surface-enhanced Raman scattering (SERS) substrate. The surface morphology of the synthesized nanoparticles was characterized via field emission scanning electron microscopy (FE-SEM), and atomic force microscopy (AFM). Rhodamine 6G (R6G) is used as a model analyte to evaluate the performance of the tiny Ag nanoparticle bounded triangular Au nanoplates as a SERS-active substrate and validate the SERS effect. The fabricated SERS substrate showed drastically enhanced intensity with a SERS enhancement factor as high as 107, which is enough to detect a single molecule, and excellent reproducibility (less than +/- 5%) of the signal intensity. This is because of the island-like tiny Ag nanoparticle bounded triangular Au nanoplates and their large number of hot spots. This substrate could also be used for label-free immunoassays, biosensing, and nanoscale optical antennas and light sources.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available