Fabrication of multi-sectional TiO 2 nanotube arrays by anodization

Li, Shiqi; Yin, Jianbo; Zhang, Gengmin

doi:10.1007/s11426-010-0155-3

Cited by 18 publications

(5 citation statements)

References 33 publications

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“…3(b) is for annealed specimen: diffraction peaks of TiO 2 with anatase crystalline structure from TiO 2 nanotube arrays and peaks of Ti from substrate. The result of XRD shows the phase transition of TiO 2 from amorphous into anatase after annealing, which is consistent with the research of Yin [10]. Equivalent circuit, R(CR)(QR) in Fig.…”

Section: Resultssupporting

confidence: 88%

Fabrication and EIS Characterization of Titania Nanotube Arrays with Top Non-Tube Layer

Wen

et al. 2011

MSF

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TiO2nanotube arrays were fabricated in the electrolyte containing 0.25wt% NH4F, 2.5vol% water and the ethylene glycol for various hours at room temperature by anodization of Ti foil in this paper. Some anodized specimens were annealed at 450°C for 3 hours. Electrochemical Impedance Spectroscopy (EIS) was employed to measure electrochemical parameters of anodized specimens. The morphology and crystalline structure of anodized products were characterized by Field Emission Scanning Electronic Microscopy (FESEM), X-ray Diffraction (XRD) and Transmission Electronic Microscopy (TEM). A non-tube layer appears on nanotube arrays with the increase in anodization time. Anodized TiO2nanotube arrays have an amorphous structure, which transfers to anatase structure after annealing at 450°C. A new equivalent circuit R(CR(R(QR)(CR))) was proposed to fit EIS data. The results show that the charge transfer resistance at the electrode/electrolyte interface controls the electrochemical process of TiO2nanotubes.

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Section: Resultssupporting

confidence: 88%

Fabrication and EIS Characterization of Titania Nanotube Arrays with Top Non-Tube Layer

Wen

et al. 2011

MSF

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“…174,175 The bamboo-type layer is prepared under square potential pulses and followed by constant current anodization. 176 Two parameters have to be noted in the construction of branched nanostructures: (i) constant concentration F À is favorable to the formation of strong transition joints between layers when the anodic process is switched from one to another step. (ii) To enhance the parity in diameters, the voltage of DC process should be equal to the maximum of square wave voltage.…”

Section: Vertical Patterningmentioning

confidence: 99%

Electrochemical engineering of hollow nanoarchitectures: pulse/step anodization (Si, Al, Ti) and their applications

et al. 2014

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Hollow nanoarchitectured materials with straight channels play a crucial role in the fields of renewable energy, environment and biotechnology due to their one-dimensional morphology and extraordinary properties. The current challenge is the difficulty on tailoring hollow nanoarchitectures with well-controlled morphology at a relatively low cost. As a conventional technique, electrochemistry exhibits its unique advantage on machining nanostructures. In this review, we present the progress of electrochemistry as a valuable tool in construction of novel hollow nanoarchitectures through pulse/step anodization, such as surface pre-texturing, modulated, branched and multilayered pore architectures, and free-standing membranes. Basic principles for electrochemical engineering of mono- or multi-ordered nanostructures as well as free-standing membranes are extracted from specific examples (i.e. porous silicon, aluminum and titanium oxide). The potential of such nanoarchitectures are further demonstrated for the applications of photovoltaics, water splitting, organic degradation, nanostructure templates, biosensors and drug release. The electrochemical techniques provide a powerful approach to produce nanostructures with morphological complexity, which could have far-reaching implications in the design of future nanoscale systems.

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“…Although there are alternative techniques to construct PCs [45][46][47][48], electrochemical methods such as the anodizing method are a fantastic way to produce regular porous materials or PCs precisely and affordably [49]. The electrochemistry approach opens a brand-new book on the mass manufacture of self-organized nanoporous materials [50][51][52].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in the Fabrication of Photonic Crystals Based on Porous Anodic Materials

et al. 2023

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Photonic crystals (PCs) based on porous anodic materials have been proven to be a potent and versatile instrument for the emergence of new technologies with a wide range of applications. Their lower production costs are one of the key advantages, making PC-based systems more widely available and appropriate for industrial manufacturing. The ability to produce well-defined pores on metal oxide and semiconductor surfaces has experienced a major renaissance due to the striking differences in characteristics between porous surfaces and dense oxide layers. In this review, we give a general overview of the progress of PC fabrication based on porous surfaces of anodized aluminum (Al), silicon (Si), and titanium (Ti) using various anodization techniques, and their optical characteristics and applications are discussed. The anodizing conditions have a large influence on the pore geometry of the produced porous surfaces. The review fully focuses on the advancements made in manufacturing anodic aluminum oxide (AAO), porous silicon (pSi), and titanium-dioxide nanotube (TNT) PCs manufactured using self-ordered anodization under varied conditions. Additionally, a critical assessment of the upcoming developments in PC manufacturing and their optical characteristics suitable for various photonic devices is provided.

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Fabrication of multi-sectional TiO 2 nanotube arrays by anodization

Cited by 18 publications

References 33 publications

Fabrication and EIS Characterization of Titania Nanotube Arrays with Top Non-Tube Layer

Fabrication and EIS Characterization of Titania Nanotube Arrays with Top Non-Tube Layer

Electrochemical engineering of hollow nanoarchitectures: pulse/step anodization (Si, Al, Ti) and their applications

Recent Progress in the Fabrication of Photonic Crystals Based on Porous Anodic Materials

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