Sb在Pt(100),Pt(110),Pt(111)及Pt(320)上不可逆吸附的电化学特性

电化学（中英文） ›› 2000, Vol. 6 ›› Issue (3): 272-278.

Sb在Pt(100),Pt(110),Pt(111)及Pt(320)上不可逆吸附的电化学特性

杨毅芸,周志有,吴启辉,孙世刚

厦门大学固体表面物理化学国家重点实验室!化学系,物化所,厦门361005,厦门大学固体表面物理化学国家重点实验室!化学系,物化所,厦门361005,厦门大学固体表面物理化学国家重点实验室!化学系,物化所,厦门361005,厦门大学固体表面物理化学国家重点实验室!化学系,物化所,厦门361005

收稿日期:2000-08-28 修回日期:2000-08-28 出版日期:2000-08-28 发布日期:2000-08-28

Electrochemical Characteristics of Sb Irreversibly Adsorbed on Pt(100), Pt(110), Pt(111) and Pt(320) Electrodes

YANG Yi yun , ZHOU Zhi you,WU Qi hui, SUN Shi gang *

(State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Institute of Physical Chemistry, Xiamen University, Xiamen 361005, China

Received:2000-08-28 Revised:2000-08-28 Published:2000-08-28 Online:2000-08-28

摘要/Abstract

摘要： 研究了Sb在Pt(1 0 0 ) ,Pt(1 1 0 ) ,Pt(1 1 1 )和Pt(32 0 )单晶面上不可逆吸附的电化学特性 .发现当扫描电位的上限Eu≤ 0 .45V时 ,Sbad可以稳定地吸附在Pt(1 0 0 ) ,Pt(1 1 0 )和Pt(1 1 1 )表面 ,而Sbad在Pt(32 0 )表面稳定的电位较低 ,为Eu≤ 0 .40V .从饱和吸附Sb的铂单晶电极出发 ,通过改变电位扫描上限Eu 和电位扫描圈数可以获得不同Sb覆盖度 (θSb)的电极 .根据Sb和H在铂单晶电极表面共吸附的定量数据 ,对Sb在不同铂单晶面上饱和吸附的模型进行了初步探讨 .

关键词: 铂单晶电极, 不可逆吸附, 共吸附

Abstract: The electrochemical behaviors of irreversibly adsorbed antimony on Pt(100), Pt(110), Pt(111) and Pt(320) were studied by using cyclic voltammetry. The results revealeds that the Sb adatoms are stable on Pt(100), Pt(110), Pt(111) and on Pt(320) when electrode potentials are below 0.45 V(SCE) and 0.40 V, respectively. It was demonstrated that various coverages of Sb ad can be conveniently obtained by controlling the number of potential cycling and varying the upper limit of potential scan. The electrochemical behaviors of irreversibly adsorbed antimony varied with the surface atomic arrangement of Pt single crystal electrodes. Based on quantitative results of the relationship between θ H and θ Sb , the models of surface structure for saturation adsorption of Sb on the 4 Pt single crystal electrodes are proposed.

Key words: Pt single crystal electrodes, Irreversibly adsorption of Sb, Coadsorption

中图分类号:

O646

杨毅芸,周志有,吴启辉,孙世刚. Sb在Pt(100),Pt(110),Pt(111)及Pt(320)上不可逆吸附的电化学特性[J]. 电化学（中英文）, 2000, 6(3): 272-278.

YANG Yi yun , ZHOU Zhi you,WU Qi hui, SUN Shi gang * . Electrochemical Characteristics of Sb Irreversibly Adsorbed on Pt(100), Pt(110), Pt(111) and Pt(320) Electrodes[J]. Journal of Electrochemistry, 2000, 6(3): 272-278.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2000/V6/I3/272

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