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肾上腺素电氧化过程的快速扫描循环伏安研究

张占军 李经建 吴锡尊 张文智 蔡生民

物理化学学报2001,Vol.17Issue(6):542-546,5.
物理化学学报2001,Vol.17Issue(6):542-546,5.

肾上腺素电氧化过程的快速扫描循环伏安研究

Fast-scan Cyclic Voltammetry Study of Electrooxidation of Adrenaline

张占军 1李经建 1吴锡尊 2张文智 2蔡生民1

作者信息

  • 1. 北京大学化学与分子工程学院,
  • 2. 河北师范大学化学系,
  • 折叠

摘要

Abstract

The mechanism of the electrochemical oxidation of adrenaline was studied using fast-scan cyclic voltammetry as a major means.In 1 mol· dm- 3 H2SO4,the electrooxidation of adrenaline showed the elementary characteristics of diffusion and were companied by the weak adsorption of electroactive species.In the case of fast-scan test,the electrooxidation of adrenaline was considered to obey EC(electron transfer-chemical reaction) mechanism..When the concentration of adrenaline was below 1.00× 10- 3 mol· dm- 3,the characteristics of adsorption was easily detected.And the characteristics of adsorption became more evident as the concentration of adrenaline was decreased or the potential scan rate was increased.The transfer coefficient α and the rate constant of the electrochemical reaction ks were calculated as 0.264 and 31.81 s- 1 respectively.

关键词

肾上腺素/电化学氧化反应/循环伏安法/快速循环伏安法/弱吸附

分类

化学化工

引用本文复制引用

张占军,李经建,吴锡尊,张文智,蔡生民..肾上腺素电氧化过程的快速扫描循环伏安研究[J].物理化学学报,2001,17(6):542-546,5.

物理化学学报

OA北大核心CSCDSCI

1000-6818

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