Title
Kompozitni materijali na bazi metalnih oksida i derivata grafita: sinteza, karakterizacija i primena
Creator
Stepić, Katarina, 1993-
CONOR:
140012297
Copyright date
2026
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
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Language
Serbian
Cobiss-ID
Theses Type
Doktorska disertacija
description
Datum odbrane: 18.06.2026.
Other responsibilities
University
Univerzitet u Nišu
Faculty
Prirodno-matematički fakultet
Group
Odsek za hemiju
Alternative title
Compozite materials based on metal oxides and graphite derivatives: synthesis, characterization and application
Publisher
[K. D. Stepić]
Format
178 str.
description
Bibliografija: str. 173-178.
Biografija: 171-172.
description
Applied chemistry
Abstract (en)
The aim of this doctoral dissertation was to develop composites based
on graphite and its derivatives, modified with TiO2, ZrO2, and ZnO
oxides, for application in the sorption removal and photocatalytic
degradation of textile dyes from aqueous solutions. The base graphite
material was synthesized by a modified Hummers-Offeman method
using waste graphite powder, while the metal oxide composites were
prepared by a modified sol-gel method followed by reflux treatment.
The synthesized materials were characterized by SEM, XRD, FTIR,
N₂ adsorption/desorption analysis, and acid-base analysis, confirming
that modification with metal oxides led to enhanced surface
development, changes in pore structure and surface properties, as well
as the formation of functional bonds between the graphite matrix and
the oxide phases. The applicability of the obtained materials was
examined in the processes of sorption and photocatalysis of the
cationic dye Methylene Blue and the anionic dye Reactive Blue 19.
The obtained results confirm that the synthesized graphite-dominant
composites containing metal oxides represent cost-effective,
sustainable, and functional materials with significant potential for
application in the treatment of dye-contaminated wastewater, and
show that the choice of metal oxide dopant determines the selectivity
of the composites toward the type of pollutant.
Authors Key words
grafitni kompozit, oksidi metala, hemijska modifikacija,
sorpcija, fotokataliza, metilen plavo, reaktivna plava 19,
sorpciona ravnoteža, kinetika
Authors Key words
graphite composite, metal oxides, chemical modification, sorption,
photocatalysis, methylene blue, reactive blue 19, sorption
equilibrium, kinetics
Classification
546.7+546.26-162]:66.017(043)
Subject
Р 003
Type
Tekst
Abstract (en)
The aim of this doctoral dissertation was to develop composites based
on graphite and its derivatives, modified with TiO2, ZrO2, and ZnO
oxides, for application in the sorption removal and photocatalytic
degradation of textile dyes from aqueous solutions. The base graphite
material was synthesized by a modified Hummers-Offeman method
using waste graphite powder, while the metal oxide composites were
prepared by a modified sol-gel method followed by reflux treatment.
The synthesized materials were characterized by SEM, XRD, FTIR,
N₂ adsorption/desorption analysis, and acid-base analysis, confirming
that modification with metal oxides led to enhanced surface
development, changes in pore structure and surface properties, as well
as the formation of functional bonds between the graphite matrix and
the oxide phases. The applicability of the obtained materials was
examined in the processes of sorption and photocatalysis of the
cationic dye Methylene Blue and the anionic dye Reactive Blue 19.
The obtained results confirm that the synthesized graphite-dominant
composites containing metal oxides represent cost-effective,
sustainable, and functional materials with significant potential for
application in the treatment of dye-contaminated wastewater, and
show that the choice of metal oxide dopant determines the selectivity
of the composites toward the type of pollutant.
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