化学学报 ›› 2005, Vol. 63 ›› Issue (6): 545-549. 上一篇    下一篇

研究简报

铂和钌纳米薄膜电极的全湿法制备及表面增强红外效应

严彦刚,李巧霞,霍胜娟,孙颖娜,蔡文斌*   

  1. (复旦大学化学系 上海市分子催化和功能材料重点实验室 上海 200433)
  • 收稿日期:2004-07-05 修回日期:2004-11-23 出版日期:2005-03-28 发布日期:2010-12-10
  • 通讯作者: 蔡文斌

Surface-enhanced IR Absorption Effect of Pt and Ru Nanofilms Fabricated by All-wet Processes

YAN Yan-Gang, LI Qiao-Xia, HUO Sheng-Juan, SUN Ying-Na, CAI Wen-Bin*   

  1. (Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials and Department of Chemistry, Fudan University, Shanghai 200433)
  • Received:2004-07-05 Revised:2004-11-23 Online:2005-03-28 Published:2010-12-10
  • Contact: CAI Wen-Bin

金属纳米薄膜的合理制备是衰减全反射表面增强红外光谱法(ATR-SEIRAS)成功应用的关键. 通过简便可控的全湿法镀膜, 即先在红外窗口硅面上化学镀金膜, 而后再电沉积铂或钌, 制得具有极强表面增强红外效应、吸收峰向正常且几乎“无针孔”的铂或钌纳米薄膜电极, 从而可使ATR-SEIRAS技术广泛应用于研究铂、钌电极表面的吸附与反应.

关键词: 表面增强红外吸收效应, 铂钌纳米薄膜, 全湿法制备, 电催化, 一氧化碳

Economical and practicable all-wet processes have been developed to fabricate virtually pinhole-free Pt and Ru nanofilms for attenuate-total-reflection (ATR) surface-enhanced IR absorption spectroscopy (SEIRAS). The processes incorporated an initial chemical deposition of Au nanofilm on the basal plane of a Si prism with a subsequent electrodeposition of desired overlayers. Pt and Ru nanofilms thus obtained exhibit unprecedented SEIRA effect with unipolar and normally directed absorption bands for CO adlayers. This versatile strategy opens a wide opportunity for extending ATR-SEIRAS to explore surface adsorption and reaction involved in electrocatalysis.

Key words: surface-enhanced infrared absorption effect, Pt and Ru nanofilm, all-wet fabrication, electrocatalysis, carbon monoxide