| Abstract |
During the past decades, researchers have made great efforts towards ideal surface enhanced Raman spectroscopy (SERS) substrate, which is supposed to be reliable, sensitive and reusable. Boron nitride (BN) is electrically insulator and can sustain up to 600 degrees C, which makes it possible that BN acts as a barrier layer to eliminate metal-induced disturbances for SERS and provide more reliable signals of the analyte. Here, we synthesis BN via chemical vapor deposition (CVD) method, investigated its oxidation resistance and prepare BN-coated gold nanoparticles (BN/Au). Although electromagnetic enhancement decreases exponentially with distance, the SERS performance of BN/Au substrate is comparable to bare Au after being annealed at proper temperature. Moreover, Cycle tests results indicated that the introduction of BN as a coating layer could improve the stability of the SERS substrate compared to bare Au nanoparticles film. Our SERS substrate of BN/Au was obtained via CVD method, which could ensure scalable synthesis and applications. (C) 2017 Elsevier B.V. All rights reserved. |
