Synthesis and Characterization of Iron Phthalocyanine Supported on Graphene Oxide and Catalysis of Adrenaline.

Author(s) Peng, C.; Tan, S.Y.; Li, M.T.
Journal J Nanosci Nanotechnol
Date Published 2020 Apr 01

Iron tetranitro-phthalocyanine was synthesized by the reaction of 4-nitrophthalimide with FeCl₃, and was then modified by -(trimethoxysilyl)propane-1-thiol to prepare functionalized iron phthalocyanine. A graphene oxide/iron phthalocyanine composite was then prepared, comprising functionalized iron phthalocyanine supported on the surface of graphene oxide via covalent bonds. All these complexes were characterized by infrared spectra (IR), X-ray diffraction, ultraviolet/visible (UV/vis) and Raman spectroscopy, and scanning electron microscopy. The catalytic properties of the graphene oxide/iron phthalocyanine composite for catalyzing adrenaline oxidation were evaluated by measuring the absorbance intensity at the characteristic peak of the oxidation product. A fiberoptic adrenaline sensor based on a graphene oxide/iron phthalocyanine composite catalyst and fluorescence quenching was fabricated and studied. The relationship between the concentrations of dissolved oxygen and adrenaline was investigated by measuring the phase delay . The results showed that the graphene oxide/iron phthalocyanine composite can effectively catalyze adrenaline oxidization, and the optimal conditions are pH = 8.0, = 30 °C, and = 4.0 mg/mL; moreover, concentrations of adrenaline can be detected in the range from 1.8×10 to 9.2×10 mol/L with a sensor response time of 4 min.

DOI 10.1166/jnn.2020.17202
ISSN 1533-4899
Citation J Nanosci Nanotechnol. 2020;20(4):21952204.

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