Preparation and Characterization of Fe2O3 Nanoparticles by Solid-Phase Method and Its Hydrogen Peroxide Sensing Properties

作者：Hao, Chen^*; Shen, Yuru; Wang, Zhiyuan; Wang, Xiaohong^*; Feng, Feng; Ge, Cunwang; Zhao, Yutao; Wang, Kun

来源：ACS Sustainable Chemistry and Engineering, 2016, 4(3): 1069-1077.

DOI：10.1021/acssuschemeng.5b01150

• Fe2O3
• Hydrogen peroxide
• Sodium lignosulfonate
• Graphene
• Solid phase

Modified Fe2O3 nanoparticles were obtained by a conventional solid-phase method with different additions of sodium lignosulfonate (SLS) and calcining temperatures. The microstructures and morphologies of the synthesized Fe2O3 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric/differential scanning calorimetry (TG/DSC) analysis, Fourier transform infrared spectroscopy (FT-IR) and surface area and porosity analyzer (BET). The results indicate that the fine Fe2O3 particles with uniform morphology were gained (1.0 g SLS, calcined 400 degrees C). Then, the as-prepared Fe2O3 nanoparticle, along with graphene (G), was immobilized on the surface of glassy carbon electrode (GCE) by a bridge constituted of chitosan (CS) for further electrochemical measurement of cyclic voltammetry and chronoamperometry. The prepared G-Fe2O3-CS/GCE with the above-mentioned fine Fe2O3 particles (1.0 g SLS, calcined 400 degrees C) displayed high sensitivity (84.32 mu A mM(-1) cm(-2)), wide detection range (0.001-6.0 mM) and low detection limit (1.1 mu M) when applied to the electrochemical sensing of hydrogen peroxide. Moreover, the sensor was also confirmed to exhibit good anti-interference for ascorbic acid and uric acid, excellent repeatability, and long-term stability.

• 出版日期2016-3
• 单位南通大学; 江苏大学