الفهرس 
Chapter one: IntroductionOnly 14 pages are availabe for public view
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Abstract
Photocatalysis has been attracting much research interest because of its
wide applications in renewable energy and environmental remediation.
Among the photocatalysts, metal oxide semiconductors are the best
choice due to distinctive properties, durability and cost effectiveness.
Semiconductor nanoparticles display exciting and important physical
and optical properties.
Therefore in this thesis we paid a great interest for synthesizing
transition metal oxide and sulphide nanoparticles and its potential
application in photocatalytic degradation of organic dyes.
The main scope of this thesis is to investigate a facile method to
synthesize nanoparticles from its complexes and studying the effect of
complex nature on the morphology and particle size of nanoparticles.
The results revealed that the characteristics of nanoparticles are related
to the geometry of the coordinated precursor. Also different routes
including hydrothermal and solid state are investigated for the
conversion of complexes to nanoparticles. The synthesized nanoparticles
were evaluated as photocatalysts and showed efficient photoactivity.This thesis is composed of Four chapters as follows:
Chapter one: presents a general and comprehensive introduction
covering all the related topics in the work including the definition of
nanomaterials with special focus on metal oxide nanoparticles. After that
we presented the optical, chemical and electrical properties of metal
oxide nanoparticles followed by its methods of preparation and closed
the chapter with a detailed description of the photocatalysis process and
mechanism.
Chapter two: Presents the experimental part and the discussion for the
synthesis of NiO, CuO and Co3O4 nanoparticles via solid state thermal
decomposition of their corresponding coordinated metal precursors. also
we studied the effect of the precursor structure on the characteristics of
the obtained nanoparticles and characterized the nanoparticles via
different techniques such as: XRD, XPS, UV-Vis and SEM. finally we
assessed its photocatalytic activity toward the photocatalytic degradation
of methylene blue dye.
Chapter three: Presents the experimental part and the discussion for the
synthesis of TiO2 nanoparticles from its coordinated metal precursor via
a novel modified hydrothermal method inside stainless steel autoclave.
the synthesized nanoparticles were characterized via different techniques
such as: XRD, XPS, UV-Vis, TEM and SEM. the finally we assessed its
photocatalytic activity toward the photocatalytic degradation of
methylene blue dyeChapter four: Presents the experimental part and the discussion for the
synthesis of ZnS quantum dots nanoparticles prepared via solvothermal
method with PVP/PVA polymer blend. The synthesized nanoparticles
will be characterized by XRD, TEM, HRTEM, raman spectroscopy and
FT-IR. The photoluminescence spectra of the nanoparticles will be
conducted. The photocatalytic activity of ZnS nanoparticles was
assessed for the degradation of neutral red dye under UV irradiation.