g/Co(OH)2有序微纳阵列的构筑及其表面增强拉曼效应

Exploring highly active surface-enhanced Raman scattering substrates and studying the morphological correlation of surface-enhanced Raman spectroscopy has important application value in surface science, optoelectronic devices and biological detection. We used a single-layer colloidal sphere array as a template to synthesize a large-area ordered Ag/Co(OH)2 bowl-like composite micro/nano array on a conductive substrate by electrodepositing Co(OH)2 and magnetron sputtering Ag. Using Rhodamine B as the probe molecule, surface-enhanced Raman scattering spectroscopy tests show that the prepared Ag/Co(OH)2 micro/nano array has a high morphology-related enhancement factor, which is far superior to Ag nanoparticle film. This excellent enhancement effect may come from the enhancement of the local electromagnetic field induced by the ordered array structure and the nano-scale roughness of the surface of the micro/nano structure. The Ag/Co(OH)2 micro/nano array prepared by us is expected to be used in high-sensitivity analysis science and biosensor devices.