| CO在载钯分子筛薄膜电极上的增强红外吸收 |
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| 引用本文： | 姜艳霞,孙世刚,陈声培,丁楠. CO在载钯分子筛薄膜电极上的增强红外吸收[J]. 高等学校化学学报, 2001, 22(11): 1860-1863 |
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| 作者姓名： | 姜艳霞 孙世刚 陈声培 丁楠 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金 (批准号 :2 9830 0 6 0 )，教育部博士学科点专项科研基金 (批准号 :19990 3840 3)资助 |
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| 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.
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| 关 键 词： | Y-分子筛 钯原子簇 CO吸附 原位FTIRs 增强红外吸收 |
| 文章编号： | 0251-0790(2001)11-1860-04 |
| 收稿时间： | 2000-08-09 |
Enhancement of IR Absorption of CO Adsorbed on Palladium-loading Zeolite Thin Film Electrode |
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| JIANG Yan Xia,SUN Shi Gang ,CHEN Sheng Pei,DING Nan. Enhancement of IR Absorption of CO Adsorbed on Palladium-loading Zeolite Thin Film Electrode[J]. Chemical Research In Chinese Universities, 2001, 22(11): 1860-1863 |
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| Authors: | JIANG Yan Xia SUN Shi Gang CHEN Sheng Pei DING Nan |
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| Affiliation: | State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Institute of Physical Chemistry, Xiamen University, Xiamen 361005, China |
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| Abstract: | In the present paper, clusters or nanoparticles of palladium were synthesized by using ship in a bottle technology in supercages of Y zeolite. In situ electrochemical FTIR reflection spectroscopy was employed to study CO adsorption on nanoparticles of Pd in supercages of Y zeolte. A novel phenomenon of enhancement of IR absorption of adsorbed CO was revealed for the first time. In comparison with IR absorption of CO adsorbed on a massive palladium electrode, IR absorption of CO adsorbed 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 Y zeolite. |
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| Keywords: | Y zeolite Pd clusters CO adsorbed In situ FTIRs Enhanced IR absorption |
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