TiO<sub>2</sub> nanotubes and its composites: Photocatalytic and other photo-driven applications

Subramanian, Vaidyanathan; Sarker, Swagatom; Yu, Bowen; Kar, Archana; Sun, Xiaodi; Dey, Satadru

doi:10.1557/jmr.2012.392

Cited by 33 publications

(19 citation statements)

References 101 publications

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“…1−7 TiO 2 nanotube (TNT), a typical one-dimensional nanostructure, possesses unique geometrical characteristics and advantages in the photocatalytic application due to its large surface-to-volume ratio, direct pathways for charge transport, good mechanical stability, and rich activity sites for pollutant degradation. 8,9 However, it can only utilize no more than 5% of total solar energy irradiating on the earth surface due to its wide bandgap and exhibits high recombination rate of photogenerated electron/hole pairs, which restrict the wide application of TNT in the semiconductor photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ag/TiO₂ Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

Yang¹,

Sun²,

Tong³

et al. 2015

J. Phys. Chem. C

150

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Inspired by the bioadhesion mechanism found in mussel, a catechol derivative, 3-(3,4-dihydroxyphenyl)propionic acid (diHPP), is employed as both linker and reducer of Ag + to synthesize the Ag/TiO 2 nanotube (Ag/TNT) heterojunction under ambient conditions in this study. In the prepared Ag/TNT composite, Ag nanocrystals about 3.8 nm in diameter distribute over the TNT surface uniformly and form the heterojunction structure with TNT. The diHPP first links to the TNT surface through the bidentate chelation of catechol group with Ti 4+ and then acts as both an anchor and a reducer to in situ nucleate and grow Ag nanocrystals on the TNT surface. By adjusting the AgNO 3 concentration, the loading amount of Ag nanocrystals on the TNT surface can be controlled easily, and the visible-light absorption ability of Ag/TNT heterojunctions enhances with increasing the Ag loading amount. Moreover, their photocatalytic activity was evaluated by the degradation capability of Rhodamine B (RhB) under visible light. The Ag/ TNT heterojunctions exhibit the high visible-light photocatalytic activity, which can almost degrade 100% RhB within 2 h. This excellent performance can be attributed to the local electric field caused by the surface plasmon resonance (SPR) of Ag nanocrystals and the high adsorption capability of TNTs with large specific surface area.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Ag/TiO₂ Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

Yang¹,

Sun²,

Tong³

et al. 2015

J. Phys. Chem. C

150

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“…Among these processes, the electrochemical anodization of titanium in fluorinated electrolytes is a simple method to synthesize porous highly vertically ordered structures with high aspect ratios. The process of self organization of nanotube is a complex mechanism [10]- [13] and requires extensive study. The properties of self-organized TNA can be tailored using various anodization conditions and post deposition treatment.…”

Section: Introductionmentioning

confidence: 99%

Study of Titanium Dioxide Nanotube Array for the Application in Dye-Sensitized Solar Cells

Bhardwaj¹,

Rana²,

Laha³

et al. 2014

IJMMM

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Abstract-Highly ordered, self-organized TiO 2 nanotube arrays (TNA) have been successfully prepared by anodization of titanium foil in ethylene glycol electrolyte containing 0.01% ammonium fluoride (NH4F). The effect of variation of applied anodization voltage ranging from 50V to 57 V on the morphology of the TNA has been studied using field emission scanning electron microscope. The increase in applied voltage enhances average pore size from 34nm to 58nm and reduces wall thickness. Diffuse reflectance spectroscopy has been used to evaluate the amount of dye absorption on the surface of various TNA which reveals direct correlation between the dye absorption and the morphology of the sample.

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“…[24][25][26][27] For example, Lv et al successfully designed and synthesized pure brookite, anatase, and mixed-phase TiO 2 via hydrothermal reaction by adjusting pH values. It was found that mixed-phase TiO 2 exhibited the best photocatalytic activity especially when the sample was prepared under pH 5 8.…”

Section: Resultsmentioning

confidence: 99%

One-pot polyelectrolyte assisted hydrothermal synthesis of NiFe₂O₄-reduced graphene oxide nanocomposites with improved electrochemical and photocatalytic properties

Shen

Huang

et al. 2014

J. Mater. Res.

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Reduced graphene oxide-nickel ferrite (RGO-NiFe 2 O 4 ) has been successfully synthesized by the hydrothermal method in the presence of poly(diallyldimethylammonium chloride) (PDDA). PDDA is used both as a reducing agent and as a stabilizer. The prepared RGO-NiFe 2 O 4 nanocomposites have been thoroughly characterized by spectroscopic (Fourier-transform infrared spectroscopy, Raman spectroscopy, and x-ray diffraction) and thermogravimetric analysis. Microscopy techniques (scanning electron microscopy, atomic force microscopy, and transmission electron microscopy) were used to probe the morphological structures as well as to investigate the exfoliation of RGO sheets. It is interesting to find that RGO-NiFe 2 O 4 nanocomposites exhibited much better electrochemical capability than NiFe 2 O 4 . In addition, the as-prepared RGO-NiFe 2 O 4 nanocomposites can effectively remove methyl orange from water under ultraviolet light irradiation, which can be used as novel photocatalysts for environmental protection.

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TiO₂ nanotubes and its composites: Photocatalytic and other photo-driven applications

Abstract: Abstract

Cited by 33 publications

References 101 publications

Synthesis of Ag/TiO₂ Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

Synthesis of Ag/TiO₂ Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

Study of Titanium Dioxide Nanotube Array for the Application in Dye-Sensitized Solar Cells

One-pot polyelectrolyte assisted hydrothermal synthesis of NiFe₂O₄-reduced graphene oxide nanocomposites with improved electrochemical and photocatalytic properties

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TiO2 nanotubes and its composites: Photocatalytic and other photo-driven applications

Abstract: Abstract

Cited by 33 publications

References 101 publications

Synthesis of Ag/TiO2 Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

Synthesis of Ag/TiO2 Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

Study of Titanium Dioxide Nanotube Array for the Application in Dye-Sensitized Solar Cells

One-pot polyelectrolyte assisted hydrothermal synthesis of NiFe2O4-reduced graphene oxide nanocomposites with improved electrochemical and photocatalytic properties

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Product

Resources

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TiO₂ nanotubes and its composites: Photocatalytic and other photo-driven applications

Synthesis of Ag/TiO₂ Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

Synthesis of Ag/TiO₂ Nanotube Heterojunction with Improved Visible-Light Photocatalytic Performance Inspired by Bioadhesion

One-pot polyelectrolyte assisted hydrothermal synthesis of NiFe₂O₄-reduced graphene oxide nanocomposites with improved electrochemical and photocatalytic properties