Titanium oxide nanotubes, nanofibers and nanowires

Yuan, Zhong‐Yong; Su, Bao‐Lian

doi:10.1016/j.colsurfa.2004.04.030

Cited by 496 publications

(378 citation statements)

References 29 publications

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“…1, the surface areas (197-312 m 2 g À1 ) and outer diameters of the TNs (5-13 nm) increased with the rising of heating temperature. However, for TN (180-2), the tubular structure disappeared, and nanosized fibers formed instead, which was consistent with the results reported by Lee et al [22], Yuan and Su [23] and Bavykin et al [24]. XRD results of TP showed that the raw material was a mixture of rutile and anatase (Fig.…”

Section: Characterization Of Protonated Tns and Tpsupporting

confidence: 82%

Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method

Niu

Wang

Shi

et al. 2009

Microporous and Mesoporous Materials

117

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a b s t r a c tA mesoporous material, titanate nanotubes (TNs) with different surface areas (197-312 m 2 g À1 ) and pore size diameters (2-6 nm) was synthesized by alkaline hydrothermal method. Their adsorption abilities to arsenic, the notoriously poisonous inorganic contaminant in groundwater were evaluated. Batch experiments showed that the adsorption of arsenate [As (V)] was more favored in acid solution, while the uptake of arsenite [As (III)] was preferred in alkaline solution. The maximum uptake of As (V) and As (III) calculated by Langmuir equation was 208 mg g À1 (pH 3.0) and 60 mg g À1 (pH 7.0) respectively achieved on TN (180-1) adsorbent (312 m 2 g À1 , internal diameter, 5 nm), which was 33 and 10 times greater than those of nanosized titania particles (40-50 nm, 15 mg g À1 ). Silicate anions, phosphate and sulfate had little effect on arsenic adsorption onto TNs. In several real water samples, TNs still showed high uptake efficiency to arsenic at pH 7.0. More than 80% of As (III) and 95% of As (V) adsorbed on TNs could be desorbed with 1.0 M NaOH solution within 1 h. Comparison study indicated that all the tubular titanate materials exhibited great adsorption capacity to arsenic regardless their surface areas. Since the equipment required for TNs synthesis is simple and cheap, and alkali solutions are reusable, TNs can be regarded as an efficient, low-cost adsorbent for the removal of arsenic.

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Section: Characterization Of Protonated Tns and Tpsupporting

confidence: 82%

Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method

Niu

Wang

Shi

et al. 2009

Microporous and Mesoporous Materials

117

View full text Add to dashboard Cite

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“…Yuan and Su [103] studied nanostructures at different hydrothermal temperatures. They concluded that hydrothermal reaction temperature of 100-160°C results in nanotube formation, whereas higher temperature of 180-250°C leads to formation of nanoribbons.…”

Section: Synthesis Of N-tio 2 Using the Alkaline Hydrothermal Reactionmentioning

confidence: 99%

Reinforcement of flowable dental composites with titanium dioxide nanotubes

et al. 2016

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“…A mass of 1.15 g of TiO 2 was treated with an aqueous NaOH solution (w(NaOH) = 30 %) in a PTFE vessel equipped with a reflux condenser and a magnetic stirrer. The reaction was performed at 130 °C for 24 h. The raw nanotubes were washed with distilled water and then suspended in 0.1-M HCl in order to exchange the sodium ions from the nanotubes' structure with H 3 O + ions [18,20]. The protonated nanotubes were finally washed with distilled water and dried for 12 h at 75 °C.…”

Section: Syntheses Of Materialsmentioning

confidence: 99%

“…Although several crystal structures with different stoichiometries were proposed to describe the structure of titanate nanotubes, most authors agree that titanate nanotubes in protonated form (H-form) have a hydrogen trititanate monoclinic structure corresponding to the formula H 2 Ti 3 O 7 [17][18][19][20][21]. However, recent investigations based on Raman spectroscopy have provided some evidence that the H-form of the titanate nanotubes has a lepidocrocite-type layered structure, corresponding to the formula H 0.7 Ti 1.825  0.175 O 4 ·H 2 O ( : vacancy) [22,23], proposed for the first time by Renzhi Ma et al [23].…”

Section: Introductionmentioning

confidence: 99%

The mechanochemical stability of hydrogen titanate nanostructures

Plodinec¹,

Friščić²,

Iveković³

et al. 2010

Journal of Alloys and Compounds

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The structural stability of some nanostructured titanates was investigated in terms of their subsequent processing and possible applications. With the aim to investigate their mechanochemical stability, we applied high-energy ball milling and studied the resulting induced phase transitions. Hydrogen titanates with two different morphologies, microcrystals and nanotubes, were taken into consideration. The phase-transition sequence was studied by Raman spectroscopy and X-ray powder diffraction, while the morphology and crystal structure, on the nanoscale, were analyzed by high-resolution transmission electron microscopy. During the mechanochemical treatment of both morphologies, the phase transitions from hydrogen titanate to TiO2 anatase and subsequently to TiO2 rutile were observed. In the case of hydrogen trititanate crystals, the phase transition to anatase starts after a longer milling time than in the case of the titanate nanotubes, which is explained by the larger particle size of the crystalline powder. However, the phase transition from anatase to rutile occurred more quickly in the crystalline powder than in the case of the nanotubes.

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Titanium oxide nanotubes, nanofibers and nanowires

Cited by 496 publications

References 29 publications

Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method

Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method

Reinforcement of flowable dental composites with titanium dioxide nanotubes

The mechanochemical stability of hydrogen titanate nanostructures

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