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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Sinteza metalnih nanočestica u graničnom sloju elektrolita i plazme / Synthesis of metallic nanoparticles in electrolyte plasma interface

Nikola Bednar 22 December 2014 (has links)
<p>Metalne nanočestice spadaju u nanomaterijale sa širokim spektrom<br />primena u plazmonici, elektronici, katalizi i biomedicini.<br />Razvijene su brojne metode njihove fabrikacije. U ovoj disertaciji<br />predstavljena je mogućnost sinteze metalnih nanočestica korišćenjem<br />jednog novog metoda, u kojem se koristi granični sloj elektrolita i<br />plazme. Niskotemperaturni joni iz plazme se pomoću električnog polja<br />uvode u elektrolit sa prekursorskim materijalom. Ovako uvedeni joni<br />iniciraju oksido-redukcione reakcije sa prekursorom metala u<br />nanometarski tankom sloju na površini elektrolita.<br />Razvijen je generator niskotemperaturne plazme baziran na<br />konfiguraciji dielektričnih barijernih pražnjenja. Urađena je njegova<br />karakterizacija i merenje struje formiranih reaktivnih jona. Metod je<br />verifikovan na primeru nanočestica srebra i platine.</p> / <p>Metallic nanoparticles are nanomaterials with wide range of applications in<br />plasmonics, electronics, catalysis and biomedicine. Thus, a number of<br />methods for their fabrication exist. In this dissertation a possibility of<br />synthesis of metallic nanoparticles using а new method, which exploits an<br />interface between plasma and electrolyte. By means of an electric field, lowtemperature<br />ions from plasma are introduced into the electrolyte with<br />precursor material. The ions from plasma start redox reactions with metal<br />precursor ions within a nanometer-thin layer on the surface of the electrolyte.<br />Nonthermal plasma generator based on dielectric barrier discharges was<br />developed and characterized. Currents of generated reactive ions were<br />subsequently measured. The developed method was verified by synthesis of<br />silver and platinum nanoparticles.</p>

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