Two novel hierarchical homogeneous nanoarchitectures of TiO2 nanorods branched and P25-coated TiO2 nanotube arrays and their photocurrent performances

被引：39

作者：

Hu, Anzheng ^{[1
,2
]}

Cheng, Cuixia ^{[1
]}

Li, Xin ^{[1
]}

Jiang, Jian ^{[1
]}

Ding, Ruimin ^{[1
]}

Zhu, Jianhui ^{[1
]}

Wu, Fei ^{[1
]}

Liu, Jinping ^{[1
]}

Huang, Xintang ^{[1
]}

机构：

[1] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China

[2] Xiangfan Univ, Sch Phys & Elect Engn, Xiangfan 441053, Hubei, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2011年 / 6卷

基金：

中国国家自然科学基金;

关键词：

SENSITIZED SOLAR-CELLS; VISIBLE-LIGHT; DYE; WATER; EFFICIENCY; PHOTOCATALYST; ANODIZATION; CONVERSION; STABILITY; MEMBRANE;

D O I：

10.1186/1556-276X-6-91

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report here for the first time the synthesis of two novel hierarchical homogeneous nanoarchitectures of TiO2 nanorods branched TiO2 nanotube arrays (BTs) and P25-coated TiO2 nanotube arrays (PCTs) using two-step method including electrochemical anodization and hydrothermal modification process. Then the photocurrent densities versus applied potentials of BTs, PCTs, and pure TiO2 nanotube arrays (TNTAs) were investigated as well. Interestingly, at -0.11 V and under the same illumination condition, the photocurrent densities of BTs and PCTs show more than 1.5 and 1 times higher than that of pure TNTAs, respectively, which can be mainly attributed to significant improvement of the light-absorbing and charge-harvesting efficiency resulting from both larger and rougher surface areas of BTs and PCTs. Furthermore, these dramatic improvements suggest that BTs and PCTs will achieve better photoelectric conversion efficiency and become the promising candidates for applications in DSSCs, sensors, and photocatalysis.

引用

页数：6

共 44 条

[11] TiO2/TiSi2 Heterostructures for High-Efficiency Photoelectrochemical H2O Splitting [J].

Lin, Yongjing ;

Zhou, Sa ;

Liu, Xiaohua ;

Sheehan, Stafford ;

Wang, Dunwei .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (08) :2772-+

[12] Fabrication of rutile TiO2 tapered nanotubes with rectangular cross-sections via anisotropic corrosion route [J].

Liu, Lei ;

Qian, Jieshu ;

Li, Bo ;

Cui, Yuming ;

Zhou, Xingfu ;

Guo, Xuefeng ;

Ding, Weiping .

CHEMICAL COMMUNICATIONS, 2010, 46 (14) :2402-2404

[13] Filling of TiO2 nanotubes by self-doping and electrodeposition [J].

Macak, Jan M. ;

Gong, Bin G. ;

Hueppe, Michael ;

Schmuki, Patrik .

ADVANCED MATERIALS, 2007, 19 (19) :3027-+

[14] Ordered Ferroelectric Lead Titanate Nanocellular Structure by Conversion of Anodic TiO2 Nanotubes [J].

Macak, Jan M. ;

Zollfrank, Cordt ;

Rodriguez, Brian J. ;

Tsuchiya, Hiroaki ;

Alexe, Marin ;

Creil, Peter ;

Schmuki, Patrik .

ADVANCED MATERIALS, 2009, 21 (30) :3121-+

[15] Greatly enhanced sub-bandgap photocurrent in porous GaP photoanodes [J].

Marin, FI ;

Hamstra, MA ;

Vanmaekelbergh, D .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (03) :1137-1142

[16] Natural Dyes Adsorbed on TiO2 Nanowire for Photovoltaic Applications: Enhanced Light Absorption and Ultrafast Electron Injection [J].

Meng, Sheng ;

Ren, Jun ;

Kaxiras, Efthimios .

NANO LETTERS, 2008, 8 (10) :3266-3272

[17] Enhanced photoelectrochemical generation of hydrogen from water by 2,6-dihydroxyantraquinone-functionalized titanium dioxide nanotubes [J].

Mohapatra, Susanta K. ;

Misra, Mano .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (31) :11506-11510

[18] Enhanced photocleavage of water using titania nanotube arrays [J].

Mor, GK ;

Shankar, K ;

Paulose, M ;

Varghese, OK ;

Grimes, CA .

NANO LETTERS, 2005, 5 (01) :191-195

[19] Use of highly-ordered TiO2 nanotube arrays in dye-sensitized solar cells [J].

Mor, GK ;

Shankar, K ;

Paulose, M ;

Varghese, OK ;

Grimes, CA .

NANO LETTERS, 2006, 6 (02) :215-218

[20] Vertically oriented Ti-Fe-O nanotube array films: Toward a useful material architecture for solar spectrum water photoelectrolysis [J].

Mor, Gopal K. ;

Prakasam, Haripriya E. ;

Varghese, Oomman K. ;

Shankar, Karthik ;

Grimes, Craig A. .

NANO LETTERS, 2007, 7 (08) :2356-2364

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