Non-enzymatic hydrogen peroxide biosensor based on rose-shaped FeMoO_4 nanostructures produced by convenient microwave-hydrothermal method

摘要

In this work, we demonstrated a simple, rapid and reliable microwave-assisted hydrothermal approach to synthesize the uniform rose-shaped FeMoO_4 within 10 min. The morphologies of the synthesized materials were characterized by X-ray powder diffraction and scanning electron microscopy. Moreover, a non-enzymatic amperometric sensor for the detection of hydrogen peroxide (H_2O_2) was fabricated on the basis of the FeMoO_4 as electrocatalysis. The resulting FeMoO_4 exhibited high sensitivity and good stability for the detection of H_2O_2, which may be attributed to the rose-shaped structure of the material and the catalytic property of FeMoO_4. Amperometric response showed that the modified electrode had a good response for H_2O_2 with a linear range from 1 μM to 1.6 mM, a detection limit of 0.5 μM (S/N-3), high selectivity and short response time. Additionally, good recoveries of analytes in real milk samples confirm the reliability of the prepared sensor in practical applications.