Abstract
We introduce a facile, eco-friendly reduced graphene oxide/palladium tetraphenylporphyrin (RGO/Pd–TPP) nanocomposite for oxygen reduction reaction (ORR) and environmental pollutant detection. The catalytic properties of RGO/Pd–TPP toward ORR and methyl parathion (MP) reduction showed excellent performance due to the synergism between RGO and Pd–TPP. The other properties of RGO/Pd–TPP nanocomposite were characterized by various microscopic and spectroscopic techniques. The as-prepared RGO/Pd–TPP electrocatalyst was further fabricated on electrode to study the ORR activity and MP sensing. The RGO/Pd–TPP modified electrode shows higher current density and less methanol tolerance than the Pt/C electrode, which revealed that the proposed material can be used as an excellent alternative to commercial Pt/C electrode. In addition, the electrocatalytic reduction of MP on RGO/Pd–TPP/GCE was briefly investigated and achieved a good analytical performance with excellent linear range (0.1–125 μM), low detection limit ...
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