Detection of individual nanoparticle impacts using etched carbon nanoelectrodes

被引：22

作者：

Clausmeyer, Jan ^{[1
]}

Wilde, Patrick ^{[1
]}

Loeffler, Tobias ^{[1
]}

Ventosa, Edgar ^{[1
]}

Tschulik, Kristina ^{[2
]}

Schuhmann, Wolfgang ^{[1
]}

机构：

[1] Ruhr Univ Bochum, CES, Analyt Chem, Univ Str 150, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, CES, Micro Nanoelectrochem, Univ Str 150, D-44780 Bochum, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2016年 / 73卷

关键词：

Nanoelectrodes; HF etching; Particle impact electrochemistry; Particle size distribution; Ag nanoparticles; SINGLE-CELL ANALYSIS; ELECTROCHEMICAL DETECTION; SILVER NANOPARTICLES; COLLISION EVENTS; ELECTROCATALYTIC AMPLIFICATION; FIBER MICROELECTRODES; AGGLOMERATION; AGGREGATION; ELECTRODES; NANOSCALE;

D O I：

10.1016/j.elecom.2016.11.003

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A rapid and reliable nanofabrication route produces electrodes with beneficial properties for electrochemistry based on stochastic nanoparticle collision events. Carbon nanoelectrodes are etched to expose conical carbon tips which present an increased surface area for the detection of nanoparticle impacts. The tuneable electrode size as well as the conical geometry allow to increase the observed particle impact frequency while maintaining low background noise. Moreover, anodic particle coulometry for the sizing of silver nanoparticles shows that the detected impacts are representative of the polydisperse particle population. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：67 / 70

页数：4

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