Sb和S修饰Pt电极上1,3-丁二醇氧化的原位红外反射光谱研究  

In Situ FTIR Spectrocopic Investigations of 1,3-Butanediol Oxi dation on Sb and S Modified Pt Electrodes

作　　者：吴启辉[1] 杨毅芸[1] 周志有[1] 肖晓银[1] 陈声培[1] 孙世刚[1] 陈国良[2] 

机构地区：[1]厦门大学化学系,固体表面物理化学国家重点实验室,化学系,物化所,厦门361005 [2]漳州师范大学化学系,漳州363000

出　　处：《光谱学与光谱分析》2000年第5期612-613,共2页Spectroscopy and Spectral Analysis

基　　金：国家自然基金!(2 99730 35)资助

摘　　要：运用电化学原位FTIR反射光谱研究了 1,3丁二醇在以Sb和S修饰的Pt电极上的氧化过程。结果表明Sb和S修饰都能抑制 1,3丁醇的解离吸附。红外数据指出Sb的存在使 1,3丁二醇氧化产物同时含有羰基物种和CO2 ,而S修饰的Pt电极上以羧酸物种为主。In the present paper,we studied the surface st ru cture effect of Pt electrode modified with antimony and sulfur adatoms towards 1 ,3-Butanediol oxidation.The results demonstrated that the modification of Sb an d S both inhibited the dissociative adsorption of 1,3-Butanediol into CO,which is the main source of self-poisoning in electrocatalysis of small organic molec ules.At lower potentials,the principal oxidation pathway of 1,3-Butanediol on P t/Sb ad electrode is towards the production of C=O.However,at higher potent ials,the products of CO 2 increased.The presence of S ad inhibited the ox idation of 1,3-BD at low potentials(<0 8 V),and yield mainly acid species as products at higher potentials(>0 8 V).

关 键 词：原位FTIRS 1 3-丁二醇 电催化氧化 铂电极 

分 类 号：O623.413[理学—有机化学] O646.54[理学—化学]