Titanate nanotubes as support of solid base catalyst

Santos‐López, Iván A.; Handy, Brent E.; García-de-León, R.

doi:10.1016/j.tca.2013.01.005

Cited by 17 publications

(11 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2. Raman spectra of (a) pure TiO 2 -B and samples of (b) 5%, (c) 12%, (d) 42.6% and (e) 100% anatase content. Peaks with light and dark gray shadings denote TiO 2 -B and anatase vibration modes, respectively.…”

Section: Crystal and Microstructure Of 1d Titanates And Their Conversmentioning

confidence: 99%

See 1 more Smart Citation

Atomic scale characterization and surface chemistry of metal modified titanate nanotubes and nanowires

Kukovecz

Kordás

Kiss

2016

Surface Science Reports

104

View full text Add to dashboard Cite

Titanates are salts of polytitanic acid that can be synthesized as nanostructures in a great variety concerning crystallinity, morphology, size, metal content and surface chemistry.Titanate nanotubes (open-ended hollow cylinders measuring up to 200 nm in length and 15 nm in outer diameter) and nanowires (solid, elongated rectangular blocks with length up to 1500 nm and 30-60 nm diameter) are the most widespread representatives of the titanate nanomaterial family. This review covers the properties and applications of these two materials from the surface science point of view. Dielectric, vibrational, electron and X-ray spectroscopic results are comprehensively discussed first, then surface modification methods including covalent functionalization, ion exchange and metal loading are covered. The versatile surface chemistry of onedimensional titanates renders them excellent candidates for heterogeneous catalytic, photocatalytic, photovoltaic and energy storage applications, therefore, these fields are also reviewed.

show abstract

Section: Crystal and Microstructure Of 1d Titanates And Their Conversmentioning

confidence: 99%

“…Diameter or thickness 8-15 nm [9,32,42] 5-300 nm [43][44][45] o 10 nm [32] Length or lateral dimensions Up to several micrometers [32] Up to several micrometers [43,44] 4 100 nm [32] Band gap 3. [57,58] Young's modulus n.a.…”

Section: Nanotubementioning

confidence: 99%

Atomic scale characterization and surface chemistry of metal modified titanate nanotubes and nanowires

Kukovecz

Kordás

Kiss

2016

Surface Science Reports

104

View full text Add to dashboard Cite

show abstract

“…∼2θ ≈24.2θ action peaks present the diffraction peaks of TNs. In addition, a peak at ∼2θ ≈ 10° represents the intercalation interlayer structure of TNs . The results in Figure showed that the sample, which was magnetically stirred for 24 h, was titanates with a pure monoclinic phase and good crystallinity.…”

Section: Resultsmentioning

confidence: 97%

Removal of Cr (VI) from aqueous solutions by titanate nanomaterials synthesized via hydrothermal method

Fan

Lin

et al. 2016

Can J Chem Eng

View full text Add to dashboard Cite

Titanate nanomaterials (TNs) were synthesized via a simple hydrothermal method. The physical‐chemical properties of the as‐prepared TNs, such as morphology, structure, surface area, and chemical composition, were characterized by XRD, SEM, and BET. The absorption capability and adsorptive mechanism of Cr (VI) in aqueous solutions were tested in the static system. The results showed that the TNs prepared with reaction time of 24 h were in pure monoclinic phase which aggregated mutually to form a unique layered structure. TNs were considered excellent adsorbents to Cr (VI). When pH = 1, the adsorption capacity was up to 83.91 mg/g. The adsorption kinetics of Cr (VI) followed the pseudo‐first order model. The equilibrium adsorption time of TNs was 80 min. The Langmuir isotherm model fitted the equilibrium data best. The adsorption of Cr (VI) onto TNs was an exothermic process, and the adsorption process was mainly composed of electrostatic attraction. The structure of TNs basically remained unchanged after adsorption.

show abstract

“…In fact, textile industry with the discharge of synthetic dyes-containing effluents into the water system can cause considerable environmental pollution which would gravely impact the quality of life of humans [2][3][4]. For instance, methyl orange acts as one of the major chemical classes of azo dyes that is normally carcinogenic, toxic, and mutagenic in nature [5,6]. Thus, the treatments of such wastewater have become a major concern and it is urgent to develop a sustainable and cost-effective treatment technology to solve the discharge of toxic chemicals into water systems [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Rapid Formation of 1D Titanate Nanotubes Using Alkaline Hydrothermal Treatment and Its Photocatalytic Performance

Lai

Hamid

Tan

et al. 2015

Journal of Nanomaterials

View full text Add to dashboard Cite

One-dimensional (1D) titanate nanotubes (TNT) were successfully synthesized using alkaline hydrothermal treatment of commercial TiO2nanopowders in a Teflon lined stainless steel autoclave at 150°C. The minimum time required for the formation of the titanate nanotubes was 9 h significantly. After the hydrothermal processing, the layered titanate was washed with acid and water in order to control the amount of Na+ions remaining in the sample solutions. In this study, the effect of different reaction durations in a range of 3 h to 24 h on the formation of nanotubes was carried out. As the reaction duration is extended, the changes in structure from particle to tubular shapes of alkaline treated TiO2were obtained via scanning electron microscope (SEM). Also, the significant impact on the phase transformation and crystal structure of TNT was characterized through XRD and Raman analysis. Indeed, the photocatalytic activity of TNT was investigated through the degradation of methyl orange aqueous solution under the ultraviolet light irradiation. As a result, TNT with reaction duration at 6 h has a better photocatalytic performance than other samples which was correlated to the higher crystallinity of the samples as shown in XRD patterns.

show abstract

Titanate nanotubes as support of solid base catalyst

Cited by 17 publications

References 48 publications

Atomic scale characterization and surface chemistry of metal modified titanate nanotubes and nanowires

Atomic scale characterization and surface chemistry of metal modified titanate nanotubes and nanowires

Removal of Cr (VI) from aqueous solutions by titanate nanomaterials synthesized via hydrothermal method

Rapid Formation of 1D Titanate Nanotubes Using Alkaline Hydrothermal Treatment and Its Photocatalytic Performance

Contact Info

Product

Resources

About