| 초록 |
In this study, we propose a novel approach for controlling the particle size and distribution using plasma-assisted electrochemical synthesis. The continuous, controlled addition of an Au precursor with syringe pump successfully controls the particle size in the range of 50 to 300 nm with a monodisperse size distribution. Moreover, gold nanoparticles can be formed successfully without any stabilizer and reducing agent. Through optimization of the reaction parameters, including the reaction temperature, discharge current of the microplasma, pH, and concentration of D-(-)-fructose, we verify two distinct feature of diffusion-controlled growth that the particle growth is good agreement of theoretical growth rate (r ~ t1/3) and the formed gold nanoparticles exhibit polyhedral or near-spherical shapes. We also present a novel and facile methodology for the synthesis of highly branched Au nanoparticles by plasma electrochemical synthesis. |
