CAJ | 학술논문

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TiO_2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TiO_2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0.01 mL·L~(-1)的H_2具有良好的灵敏性(灵敏度S=14).
채용전화학양겁양화적방법,이함F-적용액위전해액,재금속태기저표면생장출규칙배렬적TiO_2납미관진렬,병통과전화학침적적방법대지진행금속Pd참잡.이용XRD、SEM화TEM대양품진행분석표정,병측시료양품적경민성능.결과표명,용차충방법제비적Pd참잡적TiO_2납미관진렬구유량호적경기민감성능,괄당참Pd적양품재교저온도(80℃)하대0.01 mL·L~(-1)적H_2구유량호적령민성(령민도S=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 TiO_2 nanotube arrays obtained by the above method have excellent hydrogen sensing properties under working temperature of 80℃ and low limit hydrogen concentration of 0.0 1 mL·L~(-1),and the sensitivity of the sample is 14.