摘要
采用阳极氧化法在高纯钛片上原位组装TiO2纳米管阵列,然后用脉冲电沉积方法将Pt沉积到TiO2纳米管阵列上,制备出Pt-TiO2纳米管电极.利用XRD和SEM对所获电极的微观结构和形貌进行表征,结果表明,Pt纳米颗粒以花簇状分散在TiO2纳米管上,晶粒大小约为25.6 nm.对甲醇的电催化性能的研究结果表明,脉冲电沉积制得的Pt-TiO2纳米管电极比TiO2纳米管电极和纯Pt片电极具有更高的电催化活性,是Pt电极的40多倍.
Platinum（Pt） nanoflower structure was electrodeposited on the surface of the aligned TiO 2 nanotube,which was fabricated by anodic oxidation on titanium samples.The obtained electrode was characterized by XRD and SEM.The experiment results show that Pt is dispersed on the TiO 2 nanotubes in the shape of nanoflowers,particle size is 25.6 nm based on the calculations of XRD.Compared with pure Pt and clean TiO 2 nanotube arrays,the hybrid electrodes＇ electrocatalytic activity for methanol oxidation has been greatly improved.The oxidation current densities on Pt-TiO 2 nanotubes electrode are 40 times higher than that of pure platinum electrode.The hybrid electrode shows promising applications in many fields,such as direct methanol fuel cell,treatment of polluted water and so on.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2012年第5期1021-1024,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:51002004)
北京市教委科技发展基金(批准号:KZ201010005001
KM201110005003)
电子薄膜与集成器件国家重点实验室开放课题(批准号:UESTC:KFJJ201001)
广西省自然科学基金(批准号:2010GXNSFB013009)资助
关键词
甲醇
脉冲电沉积
铂
TIO2纳米管
电催化性能
Methanol
Pulse electrodeposition
Platnium
TiO 2 nanotubes
Electrocatalytic property
