| 초록 |
Gold plasmonic photocatalysts are receiving increasing attention due to their large absorption cross-section in the visible light region. Recently, plasmonic gold nanoparticles photocatalysts researches have been reported to prove electron transfer kinetics. In such researches, the size of gold nanoparticles was fixed around 15 nm that can readily be synthesized by the traditional Turkevich method. With varying the size of photocatalysts, the circumstance of the vicinity of nanoparticles could be modified, leading to changing in the features of localized surface plasmon resonance of gold nanoparticles as well. Hence, we had focused on changing in the electron transfer rate according to the sizes of gold nanoparticles. To investigate the photocatalytic activities on different sizes of gold nanoparticles, we employed Ferricyanide/Ferrocyanide redox couple as an indicator. We also measured power-dependent reaction kinetics under identical excitation wavelength and reaction conditions. |
