Size-Dependent Voltammetry at Single Silver Nanoelectrodes

作者：Hua, Hongmei; Liu, Yong; Wang, Dongmei; Li, Yongxin^*

来源：Analytical Chemistry, 2018, 90(16): 9677-9681.

DOI：10.1021/acs.analchem.8b02644

• ELECTROCHEMICAL DETECTION
• STRIPPING VOLTAMMETRY
• NANOPARTICLES
• COLLISION
• ELECTROCATALYSIS
• FABRICATION
• PARTICLES
• CHEMISTRY
• OXIDATION

Understanding the kinetics and thermodynamics of electro-oxidation of metal nanostructures at single particles/electrodes level is extremely important. In this work, single silver nanoelectrodes with the radii down to 10 nm were fabricated by a laser-assisted puffing technique. Size-dependent voltammetry could be observed using prepared single silver nanoelectrodes with different radii, which involved a fast electron-transfer kinetics process through measuring electron-transfer rate and a favorable thermodynamics process from the negative potential shift with the decrease of radii. Our method provided a meaningful attempt to investigate electron-transfer kinetics and thermodynamics at single nanoparticles/nanoelectrodes level.

• 出版日期2018-8-21
• 单位安徽师范大学