Mazzei, Lorenzo
(2018)
Elettrodi modificati con nanomateriali di carbonio: ottimizzazione della sintesi di idrossidi doppi a strati.
[Laurea magistrale], Università di Bologna, Corso di Studio in
Chimica industriale [LM-DM270]
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Abstract
In this thesis work, it has been studied the effect of carbonaceous nanomaterials like graphene and nanotubes on GC electrodes, in various configurations, to perform the synthesis of the layered double hydroxide of nickel and aluminium. The potentiodynamic electrodeposition was found more efficient as to Ni centres electroactivity and more reproducible than potentiostatic or galvanostatic electrodeposition. It has been performed a structural characterization by means of XRD analysis (which confirmed the typical hydrotalcitical pattern) and a morphological characterization by means of SEM analysis, from which it was observed a homogeneous and well adherent coating, except for the bilayer configurations. It was carried out an electrochemical characterization to evaluate the electroactive surface area, that was found to be significantly increased in the presence of graphene, and the charge transfer resistance, that was lower when the nanomaterials were present. The modified electrodes were then tested in practical applications like the glucose determination and the oxygen evolution reaction.
Abstract
In this thesis work, it has been studied the effect of carbonaceous nanomaterials like graphene and nanotubes on GC electrodes, in various configurations, to perform the synthesis of the layered double hydroxide of nickel and aluminium. The potentiodynamic electrodeposition was found more efficient as to Ni centres electroactivity and more reproducible than potentiostatic or galvanostatic electrodeposition. It has been performed a structural characterization by means of XRD analysis (which confirmed the typical hydrotalcitical pattern) and a morphological characterization by means of SEM analysis, from which it was observed a homogeneous and well adherent coating, except for the bilayer configurations. It was carried out an electrochemical characterization to evaluate the electroactive surface area, that was found to be significantly increased in the presence of graphene, and the charge transfer resistance, that was lower when the nanomaterials were present. The modified electrodes were then tested in practical applications like the glucose determination and the oxygen evolution reaction.
Tipologia del documento
Tesi di laurea
(Laurea magistrale)
Autore della tesi
Mazzei, Lorenzo
Relatore della tesi
Correlatore della tesi
Scuola
Corso di studio
Ordinamento Cds
DM270
Parole chiave
nickel layered double hydroxide electrochemical deposition glassy carbon multi walled carbon nanotubes reduced graphene oxide
Data di discussione della Tesi
22 Marzo 2018
URI
Altri metadati
Tipologia del documento
Tesi di laurea
(NON SPECIFICATO)
Autore della tesi
Mazzei, Lorenzo
Relatore della tesi
Correlatore della tesi
Scuola
Corso di studio
Ordinamento Cds
DM270
Parole chiave
nickel layered double hydroxide electrochemical deposition glassy carbon multi walled carbon nanotubes reduced graphene oxide
Data di discussione della Tesi
22 Marzo 2018
URI
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