NiO/TiO_2纳米管阵列异质结电极的制备及光电化学性能  

Preparation and Photoelectrochemical Property of NiO/TiO_2 Nanotube Arrays Heterojunction Electrode

作　　者：孙大春[1] 王丽萍[2] 郭进[3] 李伊荇[3] 李明辉[3] 付乌有[3] 杨海滨[3] 

机构地区：[1]白城师范学院教育技术系,吉林白城137000 [2]白城师范学院物理系,吉林白城137000 [3]吉林大学超硬材料国家重点实验室,长春130012

出　　处：《吉林大学学报（理学版）》2011年第6期1124-1130,共7页Journal of Jilin University:Science Edition

基　　金：吉林省科技发展计划项目(批准号:20100417)

摘　　要：采用阳极氧化方法在金属钛表面制备TiO2纳米管阵列,管内径为60～90 nm,壁厚约为15 nm,长度为600 nm,通过化学镀Ni并结合空气中热处理过程,在TiO2表面生长出NiO纳米颗粒层,厚度约为200 nm,颗粒尺寸为20～40 nm,获得异质结型NiO/TiO2纳米管阵列复合电极.结果表明,在100 mW/cm2的辐照下,该光阳极可提高其光电化学特性.在0.65 V偏压时的光电流密度和光电转换效率分别为3.05 mA/cm2和1.41%.TiO2 nanotube arrays were prepared by means of anodizing method on the surface of titanium films. The packed n-type TiO2 tubes have an inner pore diameter of 60-90 nm, a wall thickness of approximately 15 nm and a length of 600 nm. The NiO/TiO2 heterojunction electrode was synthesized by means of electroless plating and annealing which resulted in TiO2 nanotube arrays coated with a layer （ about 200 nm in thickness） of NiO particles （20-40 nm）. The results show that NiO/TiO2 heterojunction electrode enhanced photoelectrochemical property under 100 mW/cm^2 irradiation. The photocurrent density is 3.05 mA/cm^2, and photoelectricity conversion efficiency is 1.41% at a bias voltage of 0.65 V.

关 键 词：TIO2纳米管阵列 NiO/TiO2异质结电极 紫外-可见光吸收 光电化学性质 

分 类 号：TB383[一般工业技术—材料科学与工程]