High surface enhanced Raman scattering activity of BN nanosheets-Ag nanoparticles hybrids

作者：Yang, Shanshan; Zhang, Zhaochun^*; Zhao, Jun; Zheng, Houli

来源：Journal of Alloys and Compounds, 2014, 583: 231-236.

DOI：10.1016/j.jallcom.2013.08.178

• Boron nitride nanosheets
• Silver nanoparticles
• SERS
• Cyclic voltammetry

A facile liquid-phase reducing route was developed to modify boron nitride (BN) nanosheets with silver nanoparticles (AgNPs) in order to fabricate BN-AgNPs hybrids with high surface enhanced Raman scattering (SERS) activity. The layered structure and morphology of BN-AgNPs nanohybrids were characterized by transmission electron microscopy and atomic force microscopy, meanwhile, Fourier transform infrared spectroscopy and ultraviolet-visible were used for studying optical properties and surface plasmon resonance applied to the optical sensor. The SERS of adsorbed 2-mercaptobenzimidazole (MBI) molecule was investigated which shown that the BN-AgNPs substrate exhibited a very strong SERS activity, offering a great potential application in molecular probe sensor. On the basis of the analysis of SERS and the Raman surface selection rules, we could draw a conclusion that the MBI molecule was adsorbed upright on the AgNPs surface through the sulphur and nitrogen atoms. What is more, the cyclic voltammetry experiment indicated the electrochemically irreversible behavior of BN-AgNPs nanohybrids in KCl solution.

• 出版日期2014-1-15
• 单位上海大学