Comparative study of potassium hexatitanate (K2Ti6O13) whiskers prepared by sol–gel and solid state reaction routes

Siddiqui, Mohd Asim; Chandel, Vishal Singh; Azam, Ameer

doi:10.1016/j.apsusc.2012.04.018

Cited by 51 publications

(14 citation statements)

References 38 publications

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“…This creates a unique electronic property. Bandgap energy Eg is 3.41 eV for as-synthesized potassium titanate nanorods were calculated from the plot, (αhʋ) 2 v/s photon energy eV, which is very close to literature value (26). aqueous suspension (100 mL) containing 10 ppm of MO dye and catalyst (0.10 g/L).…”

Section: Uv-visible Spectrophotometrysupporting

confidence: 81%

Improved Photocatalytic Degradation of Methyl Orange Dye in UV Light Irradiation by K2Ti6O13 Nanorods

Kiran

Lokesh

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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The K2Ti6O13 nanorods (KTNRs) were synthesized by Molten Salt Solution method (MSS) using TiO2 nanoparticles and potassium chloride as precursors. As synthesized KTNRs was characterized by powder X-ray diffraction to know the crystallinity, scanning electron microscopy confirms the rod type morphology with diameter 10 to 12 nm with length up to 80 nm, functional groups were studied with FT-IR spectroscopy, optical property of KTNRs showed the bandgap energy Eg= 3.41 eV by UV-Vis spectrophotometry. The synthesized KTNRs was used as photocatalyst for degradation of the methyl orange dye under UV light illumination. The degradation of methyl orange dye followed the pseudo first order rate law. The kinetics and mechanism of MO dye degradation dye was studied for different photocatalyst dosage 5, 10 and 15 mg of KTNRs, maximum for rate constant is found for 10 mg of photocatalyst.

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Section: Uv-visible Spectrophotometrysupporting

confidence: 81%

Improved Photocatalytic Degradation of Methyl Orange Dye in UV Light Irradiation by K2Ti6O13 Nanorods

Kiran

Lokesh

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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“…Figure (d) shows the variation in conductivity with frequency measured at room temperature for LCTO‐SG and LCTO‐SS ceramics. It has been observed that the conductivity gradually increases with increasing frequency, which may be ascribed to the enhancement of electron hopping frequency . It is also found that the LCTO‐SG ceramics exhibit higher conductivity than the LCTO‐SS ceramics.…”

Section: Resultsmentioning

confidence: 92%

Differentiated Electric Behaviors of La_2/3Cu₃Ti₄O₁₂ Ceramics Prepared by Different Methods

Chao

Liang

et al. 2014

J. Am. Ceram. Soc.

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Microstructure and electric behaviors of La 2/3 Cu 3 Ti 4 O 12 (LCTO) ceramics prepared by the sol-gel method (SG) and solid-state method (SS) have been systemically investigated. The results indicated that LCTO-SG ceramics sintered at 1105°C for 15 h showed larger grain size, higher density, and especially higher dielectric constant up to about 0.9-1.6 3 10 4 at 10 2~1 0 5 Hz compared to LCTO-SS ceramics. The higher dielectric constant of the LCTO-SG ceramics might be due to the stronger internal barrier layer capacitor (IBLC) effect. More notably, compared with LCTO-SS ceramics, two kinds of dielectric anomalies, one conduction activation energy value and same activation energies for the conduction and relaxation process in LCTO-SS ceramics, the LCTO-SG ceramics showed three kinds of dielectric anomalies, two values of conduction activation energy, and decrease in conduction activation energy with increasing temperature. The activation energies for the conduction and relaxation process in LCTO-SG ceramics showed great difference below about 210°C, suggesting that the mechanism of electrical conduction and dielectric relaxation seem to be different in LCTO-SG ceramics. These remarkable differences in electric behaviors of LCTO ceramics prepared by sol-gel and solid-state methods were firstly found and analyzed.

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“…After that the mixture was cooled in the furnace itself up to room temperature. The cooled material was again ground for 30 min 12,[22][23] . It was then ready for characterization.…”

Section: Methodsmentioning

confidence: 99%

“…Kikkawa et al, reported hydrolysis and thermolysis of the alkali titanates, Fujishiro et al, investigated cation exchange property of alkali titanates as these materials are capable in protecting the environment from radioactive wastes, the alkali titanates can also be used as capacitors, electrolyte for fuel cell, biosensors as well as dielectric sensors [9][10][11][12] [15][16][17][18][19] . Alkali titanates with tunnel and layered structure have been synthesized by various research groups including our group [20][21][22][23][24][25][26][27][28][29][30][31][32][33] .…”

Section: Introductionmentioning

confidence: 99%

Differential Scanning Calorimetric Analysis of Ni Doped Sodium Hexa-titanate

Alam¹,

Chandel²,

Khatoon³

2020

Orient. J. Chem

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Pure and nickel doped alkali titanates Na 2 Ti 6-x Ni x O 13 (where x = 0, 0.04, 0.08, 0.12 mol percentage) were synthesized using conventional solid-state reaction method. Phase of the synthesized samples have been confirmed with the help of X-ray diffraction (XRD) patterns recorded at room temperature (RT). Peak positions of all samples (Na 2 Ti 6-x Ni x O 13 ) exhibited the monoclinic structure. FE-SEM of these samples has been done at 10kV acceleration voltage, in secondary electron mode, at different magnifications to observe morphology (microstructure) and they have been found as rod shaped. Thermal stability of pure and nickel doped titanates was done with the help of differential scanning calorimetry (DSC) in presence of inert gas (nitrogen) from ambient temperature to 800°C, keeping heating and cooling rates 10°C/minute.

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Comparative study of potassium hexatitanate (K2Ti6O13) whiskers prepared by sol–gel and solid state reaction routes

Cited by 51 publications

References 38 publications

Improved Photocatalytic Degradation of Methyl Orange Dye in UV Light Irradiation by K2Ti6O13 Nanorods

Improved Photocatalytic Degradation of Methyl Orange Dye in UV Light Irradiation by K2Ti6O13 Nanorods

Differentiated Electric Behaviors of La_2/3Cu₃Ti₄O₁₂ Ceramics Prepared by Different Methods

Differential Scanning Calorimetric Analysis of Ni Doped Sodium Hexa-titanate

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Comparative study of potassium hexatitanate (K2Ti6O13) whiskers prepared by sol–gel and solid state reaction routes

Cited by 51 publications

References 38 publications

Improved Photocatalytic Degradation of Methyl Orange Dye in UV Light Irradiation by K2Ti6O13 Nanorods

Improved Photocatalytic Degradation of Methyl Orange Dye in UV Light Irradiation by K2Ti6O13 Nanorods

Differentiated Electric Behaviors of La2/3Cu3Ti4O12 Ceramics Prepared by Different Methods

Differential Scanning Calorimetric Analysis of Ni Doped Sodium Hexa-titanate

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Differentiated Electric Behaviors of La_2/3Cu₃Ti₄O₁₂ Ceramics Prepared by Different Methods