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Electrochemical study of nitrobenzene reduction using novel Pt nanoparticles/macroporous carbon hybrid nanocomposites.

Analytica chimica acta (2012-10-30)
Yufan Zhang, Lijun Zeng, Xiangjie Bo, Huan Wang, Liping Guo
RESUMEN

Novel Pt nanoparticles (PN) ensemble on macroporous carbon (MPC) hybrid nanocomposites (PNMPC) were prepared through a rapidly and simple one-step microwave-assisted heating procedure. The obtained PNMPC was characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and electrochemical methods. The electrochemical reduction of nitrobenzene (NB) was thoroughly investigated at the PNMPC modified glassy carbon (GC) electrode, and the catalytic rate constant was calculated to be 3.14×10(4) M(-1) s(-1) for NB. A sensitive NB sensor was developed based on the PNMPC/GC electrode, which showed a wide linear range (1-200 μM), low detection limit (50 nM), high sensitivity (6.93 μA μM(-1)), excellent anti-interference ability and good stability. And moreover, the electrode was successfully applied to the determination of NB in real samples.

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Sigma-Aldrich
Nitrobenzene, ACS reagent, ≥99.0%
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