Detection and imaging of reactive oxygen species associated with the electrochemical oxygen evolution by hydrodynamic scanning electrochemical microscopy

被引：19
|
作者：
Iffelsberger, Christian [1 ]
Raith, Timo [1 ]
Vatsyayan, Preety [1 ]
Vyskocil, Vlastimil [2 ]
Matysik, Frank-Michael [1 ]
机构：
[1] Univ Regensburg, Inst Analyt Chem Chemo & Biosensors, Fac Chem & Pharm, Univ Str 31, D-93053 Regensburg, Germany
[2] Charles Univ Prague, Fac Sci, UNESCO Lab Environm Electrochem, Dept Analyt Chem, Albertov 6, Prague 12843 2, Czech Republic
来源：
ELECTROCHIMICA ACTA | 2018年 / 281卷
关键词：
Boron-doped diamond; Hydrodynamic scanning electrochemical microscopy; Reactive oxygen species; Tip-substrate voltammetry; DOPED DIAMOND ELECTRODES; ADVANCED OXIDATION PROCESSES; HYDROXYL RADICALS; FENTON REACTION; WATER-TREATMENT; FEEDBACK MODE; REDUCTION; SECM; INTERROGATION; PLATINUM;
D O I：
10.1016/j.electacta.2018.05.115
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Hydrodynamic scanning electrochemical microscopy (SECM) was applied for the characterization of Pt and boron-doped diamond (BDD) macroelectrodes operated in a potential region producing reactive oxygen species (ROS) during oxygen evolution reaction (OER). Forced convection introduced by high-precision stirring enabled the formation of a stable diffusion layer of electrochemically produced species and tip-substrate voltammetry was used for the detection of different ROS species produced during OER at BDD. Hydrodynamic SECM imaging in substrate generation/tip collection mode revealed local differences in the production of the ROS species across the BDD electrode surface. (c) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：494 / 501
页数：8
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