الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Our thesis is divided into four chapters. It focuses on the preparation of
polyaniline-montmorillonite (PANI-NF-MMT), polyaniline-rice husk silica
nanoparticles (PANI-NF-RH-SNP) and graphene-polypyrrole nanoparticles
composite (GRP-PPY-NP). The developed nanocomposites achieved superior
adsorption uptake efficiency for removal of Zn2+ and Cr3+ ions compared to
polyaniline nanofibers alone. On the other hand, graphene-polypyrrole
nanoparticles composite were developed. Polypyrrole nanoparticles were
polymerized on the surface of graphene sheets originated from graphite using
facile approach. The developed nanocomposite achieved superior adsorption
uptake efficiency for removal of Mn+2 than polypyrrole nanoparticles alone.
The introduction is a general overview polyaniline-montmorillonite
(PANI-NF-MMT), polyaniline-rice husk silica nanoparticles (PANI-NF-RH-SNP)
and graphene-polypyrrole nanoparticles composite (GRP-PPY-NP) preparation,
characterization and potential applications.
Literature review of this research work includes the fundamentals and
motive for choosing PANI-NF-MMT, PANI-NF-RH-SNP and (GRP-PPY-NP)
nanocomposites, the interesting and improved features of as-synthesized
nanocomposites and the proposed fabrication route for MMT and NF-RH-SNP
nanoparticles decorated PANI composites and PPY nanoparticles decorated
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graphene composites. Finally, the chapter will end up with discussing the
performance of nanocomposites in wastewater treatment from heavy metal ions.
Materials and methodologies introduced the reliable pathway for
preparation of PANI-NF-MMT, PANI-NF-RH-SNP and GRP-PPY-NP. Various
characterization tools that employed to define the nanocomposites characteristics
such as FTIR spectroscopy, Dispersive Raman spectrometer, Thermogravimetric
analysis (TGA), Scanning electron microscope (SEM) and Transmission electron
microscopy (TEM).
At last, the measurements of heavy metal ions removal from aqueous
solutions using the obtained nanocomposites are described. Atomic Absorption
Spectrophotometer (AAS), was used for measuring the residual concentrations of
Zn(II), Cr(III) and Mn(II) heavy metal ions.
Results and Discussion
This chapter explores the result obtained from analytical techniques for the
characterization studies of structural, morphological features of PANI-NF-MMT,
PANI-NFRH-SNP and PPY-G nanocomposites. In addition, the performance of
the prepared nanocomposites as superior sorbents for heavy metal ions also was
investigated.
The nanomaterials shape controlled the efficiency of nanocomposite for
removal of specific metal ions. Therefore, PANI-NF-MMT was specific for highly
uptake efficiency of Zn2+ achieving 95%, PANI-NF-RH-SNP was found to specific
for high uptake efficiency of Cr3+ recording 92%, however, GRP-PPY-NP was
specific for highly uptake efficiency of Mn+2 achieving 89%.