A sensitive nonenzymatic hydrogen peroxide sensor based on Fe3O4�?�Fe2O3 nanocomposites

Bulletin of materials science

Xin Li¹  Guang Sheng Cao¹  Peilong Wang¹  Guilong Wang¹  Yue Wang¹  Junping Li¹ 

[1] Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, PR China$$Key Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, PR ChinaKey Laboratory of Enhanced Oil & Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163318, PR China$$

关键词: Fe3O4;    Fe2O3;    nanocomposites;    hydrogen peroxide;    sensor.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The Fe₃O₄â€�?�Fe₂O₃ nanocomposites were prepared by the co-precipitation method and followed by calcination process. The products were synthesized and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray analysis. The obtained Fe₃O₄â€�?�Fe₂O₃ nanocomposites were then applied to study the electrocatalytic reduction of hydrogen peroxide (H₂O₂) in 0.01 M pH 7.0 phosphate buffer medium. Then the Fe₃O₄â€�?�Fe₂O₃ nanocomposites were used as active electrode material of electrochemical sensors for H₂O₂ detection The detection sensitivity of the sensor was 20.325 𝜇A mM^-1, and the detection limit was estimated to be about 0.2 mM.

【 授权许可】

Unknown