Extending SERS study to transition-metal electrode and nanoparticle surfaces

COLL 79

Zhong-Qun Tian, Bin Ren, Zhi-Lin Yang, Jian-Qiang Hu, Jia-Wen Hu, and Shi-Gang Sun. Department of Chemistry, State Key Lab for Phys. Chem. of Solid Surfaces, Xiamen University, 422 Siming South Street, Xiamen, 361005, China
The emphasis will be put on recent work to generate SERS on transition metals (e.g., Pt, Ru, Rh, Pd, Fe, Co and Ni and their alloys) by developing various chemical and electrochemical procedures as well as optimizing the performance of the confocal Raman microscope. An approach of replacing randomly roughened surface with nanoparticle and nanorod arrays of transition metals as a promising class of highly SERS-active substrate will be discussed. The applications of SERS in surface adsorption, electro-catalysis and corrosion of transition metal-based systems have demonstrated several advantages of in-situ surface Raman spectroscopy. The surface enhancement factor and mechanism for transition metals have been studied. It has been shown that SERS together with other surface-enhanced optical phenomena could be one of important issues not only in surface science but also in nanoscale science.