Development of Serface-enhanced Tera-heltz Raman Scattering Microscope to Monitor Electrocatalytic Reactions

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13612
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Hokkaido University
• Principal Investigator: Yagi Ichizo 北海道大学, 地球環境科学研究院, 教授 (40292776)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: テラヘルツラマン分光 / 表面増強ラマン散乱 / 金クラスタ / 金ナノロッド / 白金ニッケルナノフレーム / 白金パラジウム単結晶

Outline of Final Research Achievements

In the present study, the combination between THz-Raman and surface enhanced Raman scattering (SERS) is applied to monitor the oxygen reduction reaction (ORR) at fuel cell cathode and electrocatalytic reactions at protein- or enzyme-modified electrodes. After the careful selection of laser source and ultra-narrow band notch filter, He-Ne laser and the combination of commercial 90/10 beam splitter and Bragg grate notch filter (BNF) were selected and introduced to the home-made Raman microscope, resulting in the construction of THz Raman microscope.
To estimate the possibility to observe the phonon in the nanostructures which will change during electrode reactions, gold nanoclusters were measured by THz Raman microscope and clear phonon bands depending on the cluster shape were observed.

Free Research Field

界面物理化学