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

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.

Author dc:creator

• Hashem Gaber Ahmed, Gaber

Advisors dc:contributor.advisor

• Díaz García, Marta Elena
• García Calzón, Josefa Ángela

• Química analítica
• Flourimetría

Statement dc:rights

• CC Reconocimiento - No comercial - Sin obras derivadas 4.0 Internacional

Licence dc:rights.uri

• http://creativecommons.org/licenses/by-nc-nd/4.0/

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/10651/30752

OAI identifier oai:identifier

oai:digibuo.uniovi.es:10651/30752