Sensitive Vibrational Spectroscopy of Electrocatalysts using Long-Range Surface Plasmon

2014 Fiscal Year Final Research Report

• Project/Area Number: 24550002
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Hokkaido University (2013-2014); Ochanomizu University (2012)
• Principal Investigator: YAGI Ichizo 北海道大学, 地球環境科学研究科(研究院), 教授 (40292776)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 表面増強ラマン散乱 / プラズモニック結晶 / 電極触媒反応 / in situ計測 / 長距離伝搬表面プラズモン / ささやきの回廊モード / 表面プラズモン定在波 / 金属ー軽元素伸縮振動

Outline of Final Research Achievements

Highly active electrocatalysts such as platinum (Pt) and palladium (Pd) have poor plasmonic activity, resulting in the difficulty to probe electrochemical reactions by surface enhanced Raman scattering (SERS) spectroscopy. In this study, we have achieved in situ SERS measurements of adsorbed molecules at Pt electrode surfaces by excitation of long range surface plasmon (LRSP) and surface plasmon standing wave coupled with "whispering gallery" modes induced in plasmonic crystalline structures. We have established evaluation platform to develop more active electrocatalysts based on surface vibrational spectroscopy.

Free Research Field

界面物理化学