Electrochemical shell-isolated nanoparticle-enhanced Raman spectroscopy: correlating structural information and adsorption processes of pyridine at the Au(hkl) single crystal/solution interface

Jian-Feng Li; Yue-Jiao Zhang; Alexander V Rudnev; Jason R Anema; Song-Bo Li; Wen-Jing Hong; Panneerselvam Rajapandiyan; Jacek Lipkowski; Thomas Wandlowski; Zhong-Qun Tian

doi:10.1021/ja513263j

Electrochemical shell-isolated nanoparticle-enhanced Raman spectroscopy: correlating structural information and adsorption processes of pyridine at the Au(hkl) single crystal/solution interface

J Am Chem Soc. 2015 Feb 18;137(6):2400-8. doi: 10.1021/ja513263j. Epub 2015 Feb 6.

Authors

Jian-Feng Li¹, Yue-Jiao Zhang, Alexander V Rudnev, Jason R Anema, Song-Bo Li, Wen-Jing Hong, Panneerselvam Rajapandiyan, Jacek Lipkowski, Thomas Wandlowski, Zhong-Qun Tian

Affiliation

¹ MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 3605, China.

PMID: 25625429
DOI: 10.1021/ja513263j

Abstract

Electrochemical methods are combined with shell-isolated nanoparticle-enhanced Raman spectroscopy (EC-SHINERS) for a comprehensive study of pyridine adsorption on Au(111), Au(100) and Au(110) single crystal electrode surfaces. The effects of crystallographic orientation, pyridine concentration, and applied potential are elucidated, and the formation of a second pyridine adlayer on Au(111) is observed spectroscopically for the first time. Electrochemical and SHINERS results correlate extremely well throughout this study, and we demonstrate the potential of EC-SHINERS for thorough characterization of processes occurring on single crystal surfaces. Our method is expected to open up many new possibilities in surface science, electrochemistry and catalysis. Analytical figures of merit are discussed.