摘要
By vacuum sputtering and annealing processes of gold(Au)films on boron-doped diamond(BDD)surfaces,Aunanoparticles/BDD(AuNP/BDD)composite substrates were prepared as surface-enhanced Raman scattering(SERS)substrates.The SERS performances of the substrate were investigated using methylene blue molecule as a probe.With the AuNPs having an average diameter of 20 nm,high performance of SERS was achieved at an enhancement factor of 9×10~5,arising from the synergistic effect of electromagnetic enhancement from Au NPs and chemical enhancement from diamond.The AuNP/BDD substrate is demonstrated to be highly sensitive,reproducible,stable,and reusable for the SERS examination.Due to the facile preparation process and controllable surface morphology,the AuNP/BDD substrates are favorable as a high performance SERS platform performed in practical applications.
基金
Supported by the National Natural Science Foundation of China(Grant Nos.51672102 and 51972135)。
