Synthesis of K2Ti4O9whiskers

Zaremba, T.; Hadryś, A.

doi:10.1023/b:jmsc.0000034150.99540.16

Cited by 12 publications

(11 citation statements)

References 14 publications

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“…However, it was confirmed that K 2 Ti 4 O 9 was the main synthetic product and the material synthesized with K 2 Ti 4 O 9 was observed using a scanning electron microscope (Fig. 2) [11]. The morphology of the K 2 Ti 4 O 9 compound was prismatic and showed an undivided crystal, which is consistent with previous reports on the K 2 Ti 4 O 9 crystal structure.…”

Section: Resultssupporting

confidence: 88%

“…In the treatment of radioactive wastes and waste-containing heavy metal ions, an adsorption method employing an organic or inorganic ion exchanger is commonly used. One of the most popularly applied compounds is potassium titanate oxide (K 2 Ti 4 O 9 ), which is characterized by its double acid resistance and selective adsorption of strontium ions [10][11][12]. It also serves as an inorganic ion exchanger and has been used for removing strontium ions in strongly acidic environments.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption characteristics of strontium onto K2Ti4O9 and PP-g-AA nonwoven fabric

Lee

Chun-Ki

Park

2018

Environmental Engineering Research

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This study investigated the possibility of using potassium titanate oxide (K2Ti4O9) and acrylic acid-grafted polypropylene fabric (PP-g-AA) as adsorbents capable of removing strontium from aqueous solutions. K2Ti4O9 showed the highest rate of strontium removal in the weak alkaline range, while the PP-g-AA increased strontium removal in the neutral range. Moreover, the adsorption capacity of the K2Ti4O9 was not affected by the coexistence of K and Na ions, while the adsorption capacity decreased when Ca and Mg ions were present at the same concentration as that of strontium. When coexisted at the same concentration as strontium, Na, K, Ca, and Mg ions strongly reduced the adsorption capacity of the PP-g-AA. The results also indicated that the adsorption of strontium on K2Ti4O9 was consistent with both the Langmuir and Freundlich adsorption isotherms. In contrast, the adsorption of strontium on the PP-g-AA was more consistent with the Langmuir isotherm model. Moreover, the adsorption equilibrium time of K2Ti4O9 was generally 12 h, while that of the PP-g-AA was 5 h, indicating that the adsorption rates were consistent with the pseudo-second order kinetics model. K2Ti4O9 and the PP-g-AA could be regenerated by simple washing with 0.5 N HCl.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of strontium onto K2Ti4O9 and PP-g-AA nonwoven fabric

Lee

Chun-Ki

Park

2018

Environmental Engineering Research

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“…The treated disks were immersed into KOH solutions with concentrations of 4, 6, 8 and 10 M at 600°C for 24 h, respectively. After alkaline treatment, Ti disks were heated to 600°C for 1 h in a muffle furnace according to previous studies [7,11].…”

Section: Sample Preparationmentioning

confidence: 99%

“…We hypothesized that surface engineering of Ti substrates with potassium hydroxide could form potassium titanate layers on their surfaces. Potassium titanates (K 2 OÁnTiO 2 , n = 2, 4, 6 or 8) have been widely used as fiber-reinforced ceramics and friction materials [11][12][13] due to their good mechanical, thermal and corrosion-resistance properties. Thus, the anticorrosion property of Ti substrates was expected to be improved by protection from potassium titanate layers.…”

Section: Introductionmentioning

confidence: 99%

Surface engineering of titanium with potassium hydroxide and its effects on the growth behavior of mesenchymal stem cells

et al. 2010

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“…It has attracted more attention because it is environmentally friendly, non-toxic, and has strong mechanical properties. The interlayer potassium ions can play an important role in ion exchange with other positive ions, such as Pb 2+ , Cr 2+ , Cu 2+ , and so on [3,4,5,6]. Additionally, PTW has powerful reactivity to be surface modified.…”

Section: Introductionmentioning

confidence: 99%

Separation of Lead with a Novel Ion Separating Agent Prepared by Clothing a Chitin Whisker on a Potassium Tetratitanate Whisker

Liu

Xue

2017

Materials

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Separation of Pb2+ from Cu2+-Pb2+ mixed solution by a newly-developed ion separating agent was examined, which was obtained by clothing chitin whiskers (ChW) on the surface of potassium tetratitanate whiskers (PTW). The separation capability and mechanism of the ion separating agent (ChW-PTW) was determined, based on the difference of the adsorption isotherm pattern and the adsorption kinetics model between ChW and PTW on Cu2+ and Pb2+, respectively. The results showed that the adsorption process of ChW could be described by Freundlish isotherm. The adsorption affinity of Cu2+ (kF = 0.085·g−1) on ChW was greater than Pb2+ (kF = 0.077 g−1). The adsorption pattern of PTW was inclined to the Langmuir isotherm, and Pb2+ (kL = 310.59 L·mmol−1) could be obviously more easily adsorbed on PTW than Cu2+ (kL = 25.85 L·mmol−1). The experimental data both fitted well with the pseudo-second order kinetics. The reaction rate of Pb2+ (k2 = 4.442 for ChW and k2 = 0.846 for PTW) was greater than that of Cu2+ on both ChW and PTW, while the diffusion rate of intra-particles of PTW was much higher than ChW. The adsorption model of ChW and PTW could illustrate well the separation mechanism of ChW-PTW and allowed for relevant results.

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Synthesis of K₂Ti₄O₉whiskers

Cited by 12 publications

References 14 publications

Adsorption characteristics of strontium onto K2Ti4O9 and PP-g-AA nonwoven fabric

Adsorption characteristics of strontium onto K2Ti4O9 and PP-g-AA nonwoven fabric

Surface engineering of titanium with potassium hydroxide and its effects on the growth behavior of mesenchymal stem cells

Separation of Lead with a Novel Ion Separating Agent Prepared by Clothing a Chitin Whisker on a Potassium Tetratitanate Whisker

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