Aqueous CTAB-assisted electrodeposition of gold atomic clusters and their oxygen reduction electrocatalytic activity in acid solutions.
Gradual, yet a great leap: electrosynthesized surfactant-stabilized gold atomic clusters (AuACs; Au(n) , 5≤n≤13) electrocatalyze the oxygen reduction reaction (ORR) in acid solution at low overpotentials. Depending on the surfactant concentration, the ORR mechanism gradually transits from a direct four-electron to a two-electron pathway (see picture; SHE=standard hydrogen electrode), which suggests the transformation of atomic clusters into nanoparticles.
Jeyabharathi
Chinnaiah
C
Nanoscale Electrocatalysis & Sensor Research Group, Electrodics & Electrocatalysis Division, CSIR-Central Electrochemical Research Institute, Karaikudi, India.
Kumar
Shanmugam Senthil
SS
Kiruthika
Gobichettipalayam Venkataramani Manohar
GV
Phani
Kanala Lakshmi Narasimha
KL