Hydrogen peroxide electrochemical sensor based on Fe3O4 nanoparticles

• DOI: 10.1049/mnl.2013.0612
• Publication Date: 2014-01-11T07:12:25Z
• Authors: Guang Sheng Cao; Peilong Wang; Xin Li; Yue Wang; Guilong Wang; Junping Li
• Keywords: 01 natural sciences; 0104 chemical sciences

Fe3O4 nanoparticles have been successfully synthesised through co‐precipitation of FeSO4 and FeCl3 by adding a solution of NH4OH. The products are characterised in detail by multiform techniques: scanning electron microscopy, transmission electron microscopy, energy‐dispersive X‐ray analysis and X‐ray diffraction. The results show that the phase structure of the Fe3O4 nanoparticles is a spinel structure of pure Fe3O4 with the particle size ranging from 40 to 50 nm. The obtained Fe3O4 nanoparticles have been employed as electrode materials for electrochemical sensing H2O2. The detection sensitivity of the sensor was 0.77683 µA mM−1 and the detection limit was estimated to be about 1 mM.