Sinteza metalnih nanočestica u graničnom sloju elektrolita i plazme
Synthesis of metallic nanoparticles in electrolyte plasma interface
Author
Nikola, BednarMentor
Stojanović, Goran
Committee members
Živanov, LjiljanaSrdić, Vladimir

Satarić, Miljko
Damnjanović, Mirjana
Jakšić, Zoran

Stojanović, Goran

Metadata
Show full item recordAbstract
Metalne nanočestice spadaju u nanomaterijale sa širokim spektrom primena u plazmonici, elektronici, katalizi i biomedicini. Razvijene su brojne metode njihove fabrikacije. U ovoj disertaciji predstavljena je mogućnost sinteze metalnih nanočestica korišćenjem jednog novog metoda, u kojem se koristi granični sloj elektrolita i plazme. Niskotemperaturni joni iz plazme se pomoću električnog polja uvode u elektrolit sa prekursorskim materijalom. Ovako uvedeni joni iniciraju oksido-redukcione reakcije sa prekursorom metala u nanometarski tankom sloju na površini elektrolita. Razvijen je generator niskotemperaturne plazme baziran na konfiguraciji dielektričnih barijernih pražnjenja. Urađena je njegova karakterizacija i merenje struje formiranih reaktivnih jona. Metod je verifikovan na primeru nanočestica srebra i platine.
Metallic nanoparticles are nanomaterials with wide range of applications in plasmonics, electronics, catalysis and biomedicine. Thus, a number of methods for their fabrication exist. In this dissertation a possibility of synthesis of metallic nanoparticles using а new method, which exploits an interface between plasma and electrolyte. By means of an electric field, lowtemperature ions from plasma are introduced into the electrolyte with precursor material. The ions from plasma start redox reactions with metal precursor ions within a nanometer-thin layer on the surface of the electrolyte. Nonthermal plasma generator based on dielectric barrier discharges was developed and characterized. Currents of generated reactive ions were subsequently measured. The developed method was verified by synthesis of silver and platinum nanoparticles.