Monitoring Local Electric Fields at Electrode Surfaces Using Surface Enhanced Raman Scattering-Based Stark-Shift Spectroscopy during Hydrogen Evolution Reactions
By Shi, Haotian; Cai, Zhi; Patrow, Joel; Zhao, Bofan; Wang, Yi; Wang, Yu; Benderskii, Alexander; Dawlaty, Jahan; Cronin, Stephen B.
Published in ACS Applied Materials & Interfaces
Abstract
We report the use of surface-enhanced Raman scattering (SERS) to measure the vibrational Stark shifts of surface-bound thiolated-benzonitrile molecules bound to an electrode surface during hydrogen evolution reactions (HERs). Here, the electrode surface consists of Au nanoislands deposited both with and without an underlying layer of monolayer graphene on a glass substrate. The Stark shifts observed in the nitrile (C