Synthesis and characterization of Carbon Quantum Dots, ZnO and Magnetic Nanoparticles. New Analytical Applications

  1. Hashem Gaber Ahmed, Gaber
Dirigida por:
  1. Josefa Ángela García Calzón Directora
  2. Marta Elena Díaz García Director/a

Universidad de defensa: Universidad de Oviedo

Fecha de defensa: 04 de diciembre de 2014

Tribunal:
  1. María Antonia Martín Carmona Presidente/a
  2. Jose Manuel Costa Fernandez Secretario
  3. Cesar Fernandez Sanchez Vocal
Departamento:
  1. Química Física y Analítica

Tipo: Tesis

Teseo: 375181 DIALNET lock_openRUO editor

Resumen

In this dissertation new analytical methods based on the use of magnetic and luminescent nanoparticles are presented. Molecules of clinical (5-hydroxyindole acetic acid, 5-HIAA), environmental (4-nitrophenol) and food (tannic acid) concern have been used as model analytes. Also, the functionalization of ZnO nanoparticles was addressed with the aim to use them as lubricant additives and as nanosensors. Firstly, the synthesis, functionalization and characterization using different analytical tools (XRD, FTIR, TEM, HRTEM, NMR, and Spectrophotometry UV-Vis) were performed. As a result, magnetic nanoparticles functionalized with macrocycles were employed for the separation and determination of 5-HIAA in urine samples and fluorescent carbon quantum dots were used for the determination of 4-nitrophenol in surface waters and tannic acid in wines. Moreover, the mechanisms by which the molecular recognition took place were proposed and explained. All the results are presented in details within the thesis and as a result several articles have been published in international journals.