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Synthesis and Characterization of Magnetite/Reduced Graphene Oxide
and Its Application in Uric Acid Determination
Yee Kin Weng
Supervisor: Dr. Farhanini Yusoff
Bachelor of Science (Analytical and Environmental Chemistry)
School of Marine and Environmental Sciences
Universiti Malaysia Terengganu
A modified electrode was designed based on the synergy effect of both reduced
graphene oxide (rGO) as supportive framework and nano-magnetite (Fe3O4) particles
for electrocatalytic activity of uric acid determination. The preparation of hybrid
nanocomposite Fe3O4/rGO was performed via one facile in-situ formation mechanism,
which reduction of graphene precursor and co-precipitation of magnetite nanoparticle
occurred simultaneously. Different characterization approaches such as FT-IR, XRD,
and SEM were examined on the resulting Fe3O4/rGO nano composite where identifiable
growth of nano-crystalline Fe3O4 on the surface of rGO platelet was confirmed. The
modified electrode then fabricated using drop-casting technique on the surface of GCE
electrode resulting on Fe3O4/rGO/GCE. Electrochemical studies using cyclic
voltammetry and differential pulse voltammetry revealed the excellent electrocatalytic
performance of the Fe3O4/rGO/GCE toward the detection of uric acid. The Fe3O4/rGO
hybrid-material potentially shows great promise in the development electrochemical
sensing electrode and its availabilities in other field related applications.
2002 | UMT UNDERGRADUATE RESEARCH DAY 2018