Funcionalizacion no covalente de materiales nanoestructurados de carbono y estudio de sus propiedades
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2019-07-05
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Jaén: Universidad de Jaén
Resumen
En este trabajo se ha llevado a cabo la funcionalización no covalente de nanotubos de carbono multicapa (NTCs) por adsorción irreversible del receptor 1,10-fenantrolina (FEN). la interacción NTCs/FEN se produce por interacciones de n-n stacking entre los centros arénicos de los NTCs y los anillos aromáticos de FEN. las condiciones experimentales para llevar a cabo la funcionalización se establecieron a partir del estudio de la adsorción y desorción de FEN sobre NTCs en disolución acuosa, a 25!!Cy pH 5.
Se han estudiado las propiedades adsorbentes de los NTCs funcionalizados frente a Cu(II) y Pd(II), mediante la obtención de las isotermas de adsorción a 25!!C y pH 5. El material presenta una mejora de capacidad de adsorción de los iones metálicos respecto de los NTCs. Por último, se ha comprobado la utilidad del material híbrido preparado (NTCs/FEN-Pd(II)) como catalizador en la reacción de Sonogashira ensayada.
The purpose of this project is the non-covalent functionalization of multilayer carbon nanotubes (NTCs) by irreversible adsorption of the receptor, 1,10-phenanthroline (FEN). The interaction NTCs/FEN occurs mainly by n-n stacking interactions between the arene centers of NTCs and the aromatic rings of FEN. The experimental conditions to carry out the functionalization were established from the study of the adsorption and desorption of FEN on NTCs, in aqueous solution, at 25!!( and pH 5. The adsorbent properties of the functionalized NTCs versus Cu(II) and ·Pd(II) have been studied by obtaining the adsorption isotherms at 25 !!C and pH 5. The material presents an improvement in the adsorption capacity of the metal ions regarding the NTCs. Finally, has been proved the utility of the hybrid material prepared (NTCs/FEN-Pd(II)) as a heterogeneous catalyst in the Sonogashira reaction tested.
The purpose of this project is the non-covalent functionalization of multilayer carbon nanotubes (NTCs) by irreversible adsorption of the receptor, 1,10-phenanthroline (FEN). The interaction NTCs/FEN occurs mainly by n-n stacking interactions between the arene centers of NTCs and the aromatic rings of FEN. The experimental conditions to carry out the functionalization were established from the study of the adsorption and desorption of FEN on NTCs, in aqueous solution, at 25!!( and pH 5. The adsorbent properties of the functionalized NTCs versus Cu(II) and ·Pd(II) have been studied by obtaining the adsorption isotherms at 25 !!C and pH 5. The material presents an improvement in the adsorption capacity of the metal ions regarding the NTCs. Finally, has been proved the utility of the hybrid material prepared (NTCs/FEN-Pd(II)) as a heterogeneous catalyst in the Sonogashira reaction tested.