Pd掺杂TiO_2纳米管阵列的制备及氢敏性能  

Pd Doped TiO_2 Nanotube Arrays: Preparation and Hydrogen-Sensing Performance

作　　者：吕怡[1,2] 凌云汉[2] 马洁[1] 任富建[2] 许军娜[2] 

机构地区：[1]首都师范大学化学系,北京100048 [2]清华大学材料系,北京100084

出　　处：《无机化学学报》2010年第4期627-632,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金委员会与中国工程物理研究院联合基金项目(NSAF)(No10676018;10776017)资助

摘　　要：采用电化学阳极氧化的方法,以含F-的溶液为电解液,在金属钛基底表面生长出规则排列的TiO2纳米管阵列,并通过电化学沉积的方法对之进行金属Pd掺杂。利用XRD、SEM和TEM对样品进行分析表征,并测试了样品的氢敏性能。结果表明,用此种方法制备的Pd掺杂的TiO2纳米管阵列具有良好的氢气敏感性能,适当掺Pd的样品在较低温度(80℃)下对0.01mL·L-1的H2具有良好的灵敏性(灵敏度S=14)。Well ordered and uniform titanium dioxide nanotube arrays were fabricated on titanium substrate by electrochemical anodic oxidation in a solution containing F-ions. The samples were characterized by XRD, SEM and TEM. The hydrogen-sensing properties of the as-prepared samples were also investigated. The results show that the Pd-doped TiO2 nanotube arrays obtained by the above method have excellent hydrogen sensing properties under working temperature of 80 ℃ and low limit hydrogen concentration of 0.01 mL·L^-1,and the sensitivity of the sample is 14.

关 键 词：TIO2纳米管阵列 电化学 Pd掺杂 氢气敏感 

分 类 号：O614.823[理学—无机化学] O614.411[理学—化学]