AuPt合金泡沫膜的制备及其电催化性能研究

Study on preparation of AuPt alloy foam films and their electrocatalytic activity

采用阴极共沉积氢气泡动态模板法成功地制备了AuPt合金薄膜,这种三维分级多孔结构是由连通的枝晶壁构成。通过扫描电镜(SEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)分别对泡沫膜的形貌、物相、表面组成进行了表征。结果表明:由于多孔结构、电子效应和集合效应的影响,AuPt合金对甲酸的电催化氧化表现出高催化活性。

AuPt alloy films with three-dimensional(3D)hierarchical pores consisting of interconnected dendrite walls were successfully fabricated by a strategy of cathodic code positionutilizing the hydrogenbubble dynamictemplate.Themorphology,phase and surface composition of foam films were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The results show that the AuPt alloy foam films show superior electrocatalytic activity toward the electrooxidation of formic acid in acidic solution due to the special porous structure,the electronic property,and the assembly effect.