高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (11): 1860.

• 研究论文 • 上一篇    下一篇

CO在载钯分子筛薄膜电极上的增强红外吸收

姜艳霞, 孙世刚, 陈声培, 丁楠   

  1. 厦门大学固体表面物理化学国家重点实验室化学系, 物理化学研究所, 厦门 361005
  • 收稿日期:2000-08-09 出版日期:2001-11-24 发布日期:2001-11-24
  • 通讯作者: 孙世刚(1954年出生),男,博士,教授,博士生导师,从事表面电化学和光谱电化学研究.E-mail:sgsun@xmu.edu. E-mail:sgsun@xmu.edu.
  • 基金资助:

    国家自然科学基金(批准号:29830060);教育部博士学科点专项科研基金(批准号:1999038403)资助

Enhancement of IR Absorption of CO Adsorbed on Palladium-loading Zeolite Thin Film Electrode

JIANG Yan-Xia, SUN Shi-Gang, CHEN Sheng-Pei, DING Nan   

  1. State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Institute of Physical Chemistry, Xiamen University, Xiamen 361005, China
  • Received:2000-08-09 Online:2001-11-24 Published:2001-11-24

PDF (PC)

被引次数

10

摘要： 以NaY分子筛超笼为微型反应器,通过“瓶中造船”技术合成钯原子簇(Pd13).并首次把粗糙的分子筛薄膜电极引入到电化学原位红外反射光谱研究,发现了一类新的增强红外吸收现象.与金属钯电极相比,CO红外吸收带的谱峰强度显著增加,半峰宽加宽.研究结果表明,这种增强红外吸收取决于钯原子簇的纳米尺度及分子筛超笼的特殊环境.

关键词: Y-分子筛, 钯原子簇, CO吸附, 原位FTIRs, 增强红外吸收

Abstract: In the present paper, clusters or nanoparticles of palladium were synthesized by using ship in a bottle technology in supercages of Yzeolite. In situ electrochemical FTIRreflection spectroscopy was employed to study COadsorption on nanoparticles of Pd in supercages of Yzeolte. Anovel phenomenon of enhancement of IRabsorption of adsorbed COwas revealed for the first time. In comparison with IRabsorption of COadsorbed on a massive palladium electrode, IRabsorption of COadsorbed on nanoparticles of Pd has been enhanced up to about 40 times. The results also demonstrated that the new phenomenon of enhancement of IR-absorption is related to the nanometer scale of Pd clusters and also to the particular environment of supercages of Yzeolite.

Key words: Y zeolite, Pd clusters, CO adsorbed, In situ FTIRs, Enhanced IR absorption

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