TA10表面纳米管阵列的制备及其光电化学性能  

Preparation and Photoelectrochemical Performance of Nanotube Arrays on TA10 Alloy

作　　者：郑新华 刘世凯[2] 刘琦[1] 吕志伟 顾艳红[1] 赵杰[1] ZHENG Xinhua;LIU Shikai;LIU Qi;LV Zhiwei;GU Yanhong;ZHAO Jie(College or Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;School of materials and Engineering,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]北京石油化工学院机械工程学院,北京102617 [2]河南工业大学材料科学与工程学院,河南郑州450001

出　　处：《材料科学与工程学报》2018年第3期454-459,共6页Journal of Materials Science and Engineering

基　　金：北京市本科生科学研究计划资助项目(2015J00042;2016J00047)

摘　　要：本文采用阳极氧化法,选用TA10(Ti-0.3Mo-0.8Ni)合金为原料,在反应过程中将Mo和Ni金属元素进行原位掺杂。在不同电压和不同时间两种试验因素下,探索了生成纳米管阵列的最佳电压和时间。采用扫描电子显微镜(SEM)观察纳米管阵列的形貌,X射线衍射仪(XRD)分析物相组成,以及电化学工作站测试动电位(I-V),光电流响应(i-t)和光电压响应(U-t)曲线。结果表明,在阳极氧化电压为20V,时间为1h的条件下纳米管阵列表现为最佳形貌,物相组合也为最佳。此时,饱和光电流密度为0.65mA·cm-2,光转换效率为0.37%。TiO2 nanotube arrays show good photoelectrochemical properties because of their large specific surface area,highly ordering and nano size.However,it can only absorb ultraviolet light in the range ofλ〈387 nm because of its wide band gap.In order to reduce its band gap and to promote absorption range to visible light,TA10（Ti-0.3 Mo-0.8 Ni）was used as the substrate during the process of anodic oxidation.Optimum anodic oxidation voltage and time were determined through evaluating microstructure,phase and photoelectrochemical performance of the nanotube arrays.Then,the dynamic potential polarization curve（IV）,the voltage response（U-t）and the light current response（i-t）of the nanotube arrays are measured on the electrochemical workstation.The nanotube arrays show the best morphology and best phase combination at20 Vand 1 h.Moreover,in this condition its saturated photocurrent density is 0.65 mA·cm-2,and the Photoconversion efficiency is 0.37%,so far the best.

关 键 词：阳极氧化 TA10 纳米管阵列 光电化学性能 光转换效率 

分 类 号：TB383[一般工业技术—材料科学与工程]