Chauhan, Husn Ara
(2022)
Preparation And Characterization Of Graphene
Oxide - Zinc Oxide Nanocomposite In Degradation Of Phenanthrene From Aqueous Solutions.
Masters thesis, Perpustakaan Hamzah Sendut.
Abstract
Environmental concerns have arisen due to the persistent nature and
carcinogenicity of polycyclic aromatic hydrocarbons (PAHs). Skin, lung, pancreatic,
oesophageal, bladder, colon, and female breast cancer are only some of the organs
that have been linked to long-term PAH exposure. It has been suggested that being
exposed to PAH also raises the odds of developing lung cancer. Thus, the use of
nanocomposites with high-efficiency properties is necessary. This study used the
doping approach to successfully construct a nanocomposite photocatalyst based on
graphene oxide (GO) and zinc oxide (ZnO). The nanocomposites were investigated
by Fourier transform infrared (FTIR) spectroscopy, UV-Visible diffuse reflectance
spectroscopy (UV-Vis DRS), X-ray diffraction (XRD), Raman spectroscopy,
scanning electron microscopy (SEM) with energy dispersive X-ray (EDX),
transmission electron microscopy (TEM), Brunaeur-Emmett-Teller (BET). The
photocatalytic activity of synthesized nanocomposites was tested in phenanthrene
deterioration as a precursor of contaminants in water. At 6.8 pH, the GO/ZnO
nanocomposite showed excellent ability to degrade 25 ppm of phenanthrene
(86.06%) in 120 minutes under UV-Visible light exposure followed by commercial
ZnO (62.84%), GO/ZnO in the dark with stirring (47.40%), GO/ZnO without stirring
(40.28%), and photolysis (no photocatalyst) (15.56%).
Actions (login required)
 |
View Item |
