Pt-Fe_3O_4/C复合材料的合成及对乙醇的电催化性能

Preparation of Pt-Fe_3O_4/C composites and its electrocatalytic performance for ethanol

以氯化铁和硫酸亚铁为原料,采用水热法合成了四氧化三铁纳米微粒。采用X射线衍射仪（XRD）和扫描电子显微镜（SEM）对所得产物进行表征,所得产物为均匀分布的纳米颗粒,平均粒径为40~50 nm。电沉积Pt获得了Pt-Fe3O4/C,利用循环伏安法探索了不同Pt含量的复合材料对乙醇的电催化性能。结果表明,沉积40次时Pt-Fe3O4/C的电催化性能最佳。

Fe3O4 nanoparticles were synthesized by a hydrothermal method with ferric chloride and ferrous sulfate as raw materials. Morphology and microstructure of the prepared products were investigated by X-ray diffraction （XRD） and scanning election microscope （SEM）. The results indicate that the samples are uniform particles with the diameter of 40-50 nm. Pt was electrodesposited to synthesize Pt- Fe3O4/C. The electrocatalytivity of Pt- Fe3O4/C with different Pt contents for ethanol was investigated by cyclic voltammetry （CV） method. The results show that the best catalytic activity of composite for ethanol is obtained when the scanning segment of electrodesposition of Pt is 40.