钛基底上TiO_2纳米棒有序阵列的可控制备与光电化学性能研究
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- 英文论文题名：TiO_2 Nanorod arrays: Controllable Synthesis and PEC Performance
- 论文作者：张婷婷 ; 王道爱
- 英文论文作者：Tingting Zhang ; Daoai Wang ; State Key Laboratory of Solid Lubrication ; Lanzhou Institute of Chemical Physics ; Chinese Academy of Sciences ; University of the Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院兰州化学物理研究所固体润滑国家重点实验室;中国科学院大学;
- 论文关键词：二氧化钛 ; 阵列 ; 机理 ; 光电化学
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十七分会：光化学
- 语种：中文
- 分类号：TQ134.11;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十七分会 ; 光化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：168k
- 原文格式：D
- 会议级别：全国
摘要
我们报道了一种通过通孔氧化铝(AAO)模板在钛基底上原位制备TiO_2纳米棒阵列的方法,系统研究了影响纳米棒形貌,长度和直径的一些参数,比如阳极氧化电压,氧化时间,温度以及电解液。另外提出了TiO2纳米棒的生长机理,钛离子迁移在纳米孔道中沉积形成Ti(OH)_4或无定形的TiO_2纳米棒。与同样长度的TiO_2纳米管阵列、水热制备的纳米线相比,得到的这种纳米棒阵列具有较好的光电化学性能,可用于光电化学分解水,光催化,太阳能电池,传感器等领域。
Herein, a feasible method to fabricate vertical TiO_2 NRs on Ti substrate using through-mask anodized alumina(AAO) anodization process is reported. The tunable morphology, length and diameter of TiO_2 NRs were investigated in detail that can be controlled by adjusting the anodization parameters. In addition, a formation mechanism of the nanorods was proposed during the anodic dissolution, nucleation and growth processes that the anodized Ti ions migrate and deposit in the nanochannels of AAO to form Ti(OH)_4 or amorphous TiO_2 nanorods under electric field and confinement effect of the template. The TiO_2 NRs showed higher photocurrent density under the simulated sunlight illumination, which makes it possible to be used in photoelectrochemical(PEC) water splitting, photocatalysis, solar cells, and sensors.
Herein, a feasible method to fabricate vertical TiO_2 NRs on Ti substrate using through-mask anodized alumina(AAO) anodization process is reported. The tunable morphology, length and diameter of TiO_2 NRs were investigated in detail that can be controlled by adjusting the anodization parameters. In addition, a formation mechanism of the nanorods was proposed during the anodic dissolution, nucleation and growth processes that the anodized Ti ions migrate and deposit in the nanochannels of AAO to form Ti(OH)_4 or amorphous TiO_2 nanorods under electric field and confinement effect of the template. The TiO_2 NRs showed higher photocurrent density under the simulated sunlight illumination, which makes it possible to be used in photoelectrochemical(PEC) water splitting, photocatalysis, solar cells, and sensors.
引文
[1]Chang,Y.H.;Lin,H.W.;Chen,C.J.Electrochem.Soc.2012,159,D512.
[2]Wang,D.;Liu,Y.;Yu,B.;Zhou,F.;Liu,W.Chem.Mater.2009,21,1198.
[2]Wang,D.;Liu,Y.;Yu,B.;Zhou,F.;Liu,W.Chem.Mater.2009,21,1198.