首页> 外文期刊>The Journal of Chemical Physics >Adsorption processes and structure of water molecules on Pt(110) electrodes in perchloric solutions
【24h】

Adsorption processes and structure of water molecules on Pt(110) electrodes in perchloric solutions

机译:高氯酸溶液中Pt(110)电极上水分子的吸附过程和结构

获取原文
获取原文并翻译 | 示例
           

摘要

The different adsorption processes and conformational structure of water molecules at a 0.1 M HClo_4/Pt(110) interface have been studied by using in-situ infrared-visible sum-frequency generation (SFG)spectroscopy.The O-H stretch resonance is found to tbe quite weak,while the Pt-H strethch mode arises rapidly in the hydrogen assorption region and te toatal symmetric stretch mode V_1 of Clo_4~- anions dominates the resonant signal in the double layer region.In this work we provide the first spectroxcopic evidence that hydrogens and ClO_4~- anions are more favored than wate molecules,despite their significant dipole moment,in the competitive adsorption processes below the oxidatino potential.Our SFG results suggest that,for a platinum in the 0.1 M HClO_4 solution,most interfacial water molecules are not directly adsorbed but rather are present at the electrode surface as the constituents of hydration shells.
机译:利用原位红外-可见和频产生光谱研究了0.1 M HClo_4 / Pt(110)界面上水分子的不同吸附过程和构象结构,发现OH拉伸共振相当弱的同时,Pt-H的Strethch模式在氢的吸收区域迅速出现,而Clo_4〜-阴离子的全对称对称拉伸模式V_1主导了双层区域中的共振信号。在这项工作中,我们提供了第一个光谱学证据,表明氢和尽管在氧化性电位以下的竞争性吸附过程中,ClO_4〜-阴离子比wate分子更受青睐,尽管它们具有明显的偶极矩。我们的SFG结果表明,对于0.1 M HClO_4溶液中的铂,大多数界面水分子并非直接存在吸附但作为水合壳的成分存在于电极表面。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号