维生素B1-银胶体系SERS受卤离子竞争吸附的影响

Effect of different halide ions on surface enhanced Raman spectra of vitamin B1 Ag colloid system

利用傅里叶变换-表面增强拉曼光谱(FT-SERS)研究了卤素离子(Cl-、Br-、I-)对维生素B1(VB1)分子表面增强拉曼散射光谱(SERS)的影响。实验结果表明,在此体系中加入卤素离子则SERS效应减弱,且三种卤素离子在银胶上的吸附能力顺序为I->Br->Cl-。

The interaction of Vitamin B1 （VB1） with silver colloid surface was studied by Fourier transformation surface-enhanced Raman spectroscopy （FT-SERS） in the presence of the halide ions （Cl^- , Br^-, I^-）. The results show that the SERS intensities were decreased in sequence of I^- , Br^- , and Cl^- while one of them was added to the VB1-silver colloid system.