恒电流法在AAO模板中制备钯合金纳米线  

Fabrication of Pd-Alloy Nanowire Arrays by Galvanostatic Deposition in Porous Anodic Aluminum Oxide Template

作　　者：余刚[1] 岳二红[1] 欧阳跃军[2] 司薇薇[1] 胡波年[3] 叶立元[1] 

机构地区：[1]湖南大学化学化工学院,湖南长沙410082 [2]湖南怀化学院化学化工系,湖南怀化418008 [3]湖南建材高等专科学校,湖南衡阳421008

出　　处：《湖南大学学报（自然科学版）》2007年第9期67-70,共4页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(20373015);湖南省教育厅资助项目(04C033)

摘　　要：在孔深60μm直径200nm的通孔氧化铝模板中，采用恒电流沉积法制备了钯镍与钯银合金纳米线阵列、用扫描电子显微镜和X-射线能谱仪表征纳米线的形貌和成分、研究结果表明：Pd-Ni合金纳米线中镍的含量随着电流密度的增大而增加，电流密度在0．6～1．0mA·cm^-2之间时，合金纳米线中镍的质量分数变化范围为7．89％～15．21％；Pd-Ag合金纳米线中银的质量分数随着电流密度的增大而减少，电流密度在2．0～3．0mA·cm^-2之间时，合金中银的质量分数变化范围为22．88％～16．55％、获得的钯合金纳米线线条均匀连续、结晶致密，长径比高达250.Pd-Ni and Pd-Ag alloy nanowires arrays have been fabricated in the nanopores of anodic aluminum oxide template with 200 nm in diameter and 60μm in depth by galvanostatic electrodeposition. Scanning electron microscopy and Energy-dispersive X-ray analysis were employed to characterize the morphologies and compositions of Pd-alloy nanowires. Research results show that Pd-Ni alloy nanowire arrays with 7.89 % - 15.21% （mass） nickel can be fabricated by applying current density ranging from 0.6- 1.0 mA ·cm^-2 Nickel contents in Pd-Ni alloy nanowires will ascend with the increase of current density. Pd-Ag alloy nanowire arrays with 22.88% - 16. 55% （mass） silver can be obtained by applying current density ranging from 2. 0 - 3. 0 mA·cm^-2, the silver contents in Pd-Ag alloy nanowires will decrease with the increase of current density. SEM images show that the alloy nanowire arrays are continuous, parallel and well-aligned, compact crystal, with an aspect ratio of 250.

关 键 词：钯合金 纳米结构材料 氧化铝模板 恒电流沉积 

分 类 号：O646[理学—物理化学]