TiCr alloy anodization for Cr-doped TiO2 nanotube array with improved photocatalytic activity

被引：10
作者：
Xue, Chaorui [1 ]
Hu, Shengliang [1 ]
Chang, Qing [1 ]
Li, Ying [2 ]
Li, Ning [1 ]
Li, Chengzhen [2 ]
Yang, Jinlong [1 ,3 ]
机构：
[1] North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Shanxi, Peoples R China
[2] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Shanxi, Peoples R China
[3] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 07期
基金：
中国国家自然科学基金; 山西省青年科学基金;
关键词：
TiCr alloy; anodization; TiO2; nanotube; Cr doping; photocatalysis; TITANIA NANOTUBES; PHOTOANODES; OXIDE; WATER; NANOMATERIALS; DEGRADATION; PERFORMANCE; FABRICATION; OXIDATION;
D O I：
10.1088/2053-1591/ab118c
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cr-doped anodic TiO2 nanotube array has been prepared with increased photocurrent compared to pristine titania. However, detailed effect of Cr-addition in titanium on the growth and photocatalytic property of anodic nanotube is still indistinct. To clarify this point, we initially compared the morphology, crystallinity and chemical composition of anodic nanotube arrays on various TiCr alloys. The results indicated that tube length and diameter were increased by TiCr alloy anodization, and Cr atoms were doped inside TiO2 in the form of Cr2+, Cr4+ and Cr2O3. Because of Cr-doping, anatase crystallization of nanotube was inhibited. The photocatalytic activities were next evaluated. Compared to pristine Ti, Ti0.2Cr and Ti0.5Cr, Ti0.1Cr anodization was found to be optimum for preparing nanotube array with improved photocatalytic activity. The reason could be the improved UV-visible light absorption and photo-generated carriers utilization efficiency due to appropriate Cr doping. For Ti0.2Cr and Ti0.5Cr anodization, excess Cr2O3 could be formed, cause the recombination of photo-generated carriers, and reduce the photocatalytic property. The results presented in this work may offer useful guidelines for Ti alloy anodization towards preparation of nanostructured photocatalysts with promising applications.
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页数：12
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[1]   MoO3 in Self-Organized TiO2 Nanotubes for Enhanced Photocatalytic Activity [J].
Agarwal, Pankaj ;
Paramasivam, Indhumati ;
Shrestha, Nabeen K. ;
Schmuki, Patrik .
CHEMISTRY-AN ASIAN JOURNAL, 2010, 5 (01) :66-69
[2]  
Albu S P, 2010, ANGEW CHEM INT EDIT, V120, P1942
[3]   Formation of Double-Walled TiO2 Nanotubes and Robust Anatase Membranes [J].
Albu, Sergiu P. ;
Ghicov, Andrei ;
Aldabergenova, Saide ;
Drechsel, Peter ;
LeClere, Darren ;
Thompson, George E. ;
Macak, Jan M. ;
Schmuki, Patrik .
ADVANCED MATERIALS, 2008, 20 (21) :4135-+
[4]   Ternary Ti-Mo-Ni mixed oxide nanotube arrays as photoanode materials for efficient solar hydrogen production [J].
Allam, Nageh K. ;
Deyab, Nourhan M. ;
Ghany, Nabil Abdel .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (29) :12274-12282
[5]   Study of photocatalytic activity in sputter-deposited Cr-TiO2 thin film [J].
Biswas, S. ;
Hossain, M. F. ;
Takahashi, T. ;
Kubota, Y. ;
Fujishima, A. .
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2008, 205 (08) :2023-2027
[6]   A p-type Cr-doped TiO2 photo-electrode for photo-reduction [J].
Cao, Junyu ;
Zhang, Yuanjian ;
Liu, Lequan ;
Ye, Jinhua .
CHEMICAL COMMUNICATIONS, 2013, 49 (33) :3440-3442
[7]   Nano-titania assisted photoreduction of Cr(VI) The role of the different TiO2 polymorphs [J].
Cappelletti, G. ;
Bianchi, C. L. ;
Ardizzone, S. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 78 (3-4) :193-201
[8]   Hierarchically Branched Titania Nanotubes with Tailored Diameters and Branch Numbers [J].
Chen, Bo ;
Lu, Kathy .
LANGMUIR, 2012, 28 (05) :2937-2943
[9]   Fully Depleted Ti-Nb-Ta-Zr-O Nanotubes: Interfacial Charge Dynamics and Solar Hydrogen Production [J].
Chiu, Yi-Hsuan ;
Lai, Ting-Hsuan ;
Chen, Chun-Yi ;
Hsieh, Ping-Yen ;
Ozasa, Kazunari ;
Niinomi, Mitsuo ;
Okada, Kiyoshi ;
Chang, Tso-Fu Mark ;
Matsushita, Nobuhiro ;
Sone, Masato ;
Hsu, Yung-Jung .
ACS APPLIED MATERIALS & INTERFACES, 2018, 10 (27) :22997-23008
[10]   ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].
FUJISHIMA, A ;
HONDA, K .
NATURE, 1972, 238 (5358) :37-+
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