Removal of simulated radionuclide Ce(III) from aqueous solution by as-synthesized chrysotile nanotubes

Cheng, Leilei; Yu, Shaoming; Zha, Caicun; Yao, Yunjin; Pan, Xiaofeng

doi:10.1016/j.cej.2012.09.083

Cited by 21 publications

(14 citation statements)

References 49 publications

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“…At pH > pH pzc the magnetic ChNTs (pH pzc = 5.45) surface becomes negatively charged favoring the adsorption of cationic species. On the other hand, adsorption of anionic species will be favored at pH < pH pzc [19,23]. At investigative pH, the protonation reactions of functional groups occur on magnetic ChNTs that result in their surface becoming positively charged.…”

Section: Adsorption and Desorption Mechanismmentioning

confidence: 98%

“…Previous studies have shown that the pH and materials composition can affect the chrysotile structure and crystalline phase [19,20]. The experimental conditions and results of saturation magnetization (Ms) are listed in Table 1.…”

Section: Morphology Investigationmentioning

confidence: 99%

“…The initial steep adsorption curve suggests that the adsorption occurs rapidly on the surface of magnetic ChNTs. The adsorption becomes slow subsequently for the remaining vacant surface sites of magnetic ChNTs decreasing [19]. Kinetic models of Lagergren-first-order and pseudo-secondorder ones were used to describe the adsorption kinetics of Pb(II), Cd(II) and Cr(III) adsorption onto magnetic ChNTs.…”

Section: Effect Of Ph and Ionic Strengthmentioning

confidence: 99%

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Synthesis of magnetic chrysotile nanotubes for adsorption of Pb(II), Cd(II) and Cr(III) ions from aqueous solution

Zhai

Wang

et al. 2015

Journal of Environmental Chemical Engineering

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Section: Adsorption and Desorption Mechanismmentioning

confidence: 98%

Section: Morphology Investigationmentioning

confidence: 99%

Section: Effect Of Ph and Ionic Strengthmentioning

confidence: 99%

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Synthesis of magnetic chrysotile nanotubes for adsorption of Pb(II), Cd(II) and Cr(III) ions from aqueous solution

Zhai

Wang

et al. 2015

Journal of Environmental Chemical Engineering

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“…It is not suitable for using in nanoscience and technology. [15] Recently, increasing attention has been played to the synthesis, structural characterization, and application of chrysotile nanotubes (ChNTs) [15,16]. However, few researches have done on the adsorption behavior of heavy metal ions onto ChNTs [17].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Characterization of Chrysotile Nanotubes and Their Application for Lead(II) Removal from Aqueous Solution

Cheng

Ren

Wei

et al. 2014

Separation Science and Technology

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Chrysotile nanotubes (ChNTs) were synthesized using the hydrothermal method and characterized by XRD, XPS, SEM, TEM and N2 adsorption-desorption. The results of XRD analysis confirm that the synthetic samples own the pure monoclinic chrysotile. The morphology images show that ChNTs have a hollow nanotubular structure. A batch experiment was employed to evaluate the adsorption efficiency of ChNTs toward Pb(II). The kinetic adsorption of Pb(II) on ChNTs can be described by a pseudo-second-order model very well. The adsorption of Pb(II) on ChNTs are strongly dependent on pH and ionic strength. The adsorption isotherms Downloaded by [University of Nebraska, Lincoln] at 17:56 02 February 2015 A c c e p t e d M a n u s c r i p t 2 are fitted well by Langmuir model, having a maximum adsorption capacity of 25.08 mg·g−1 at 298 ± 1 K. The thermodynamic parameters of the adsorption for Pb(II) indicate that the adsorption process of Pb(II) on ChNTs is spontaneous and endothermic. Herein, this finding suggests that ChNTs can be applied on the preconcentration of Pb(II) in the field of water treatment.

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“…an alternative to carbon and chalcogenide nanotubes [20,21]), sorbents and drug containers [22][23][24], catalyst materials [25][26][27][28], and materials for Li-ion energy sources [29]. The high specific surface (up to several hundred m 2 /g [30][31][32]), abundance of OH-groups, and synthetic flexibility made hydrosilicate nanotubes and nanoscrolls suitable for these purposes.…”

Section: Introductionmentioning

confidence: 99%

Redistribution of Mg and Ni cations in crystal lattice of conical nanotube with chrysotile structure

Krasilin¹,

Гусаров²

2017

Nanosystems: Phys. Chem. Math.

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Recently, nanotubular hydrosilicates have attracted attention due to numerous possible applications and intriguing formation mechanism. In this study we estimate energy effect of cylindrical and conical (Mg 0.5 ,Ni 0.5 ) 3 Si 2 O 5 (OH) 4 nanotube formation depending on their size parameters, cone angle, and Mg-Ni redistribution function. The calculations show that, as we expected, conical morphology is less preferable from an energy perspective than the cylindrical one, and the energy difference between them increases with the cone angle. Nevertheless, Mg and Ni cations redistribution along side length decreases strain energy of conical nanotube. This effect reaches its maximum of ∼ −75 kJ/mol at a cone angle of 5• .

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Removal of simulated radionuclide Ce(III) from aqueous solution by as-synthesized chrysotile nanotubes

Cited by 21 publications

References 49 publications

Synthesis of magnetic chrysotile nanotubes for adsorption of Pb(II), Cd(II) and Cr(III) ions from aqueous solution

Synthesis of magnetic chrysotile nanotubes for adsorption of Pb(II), Cd(II) and Cr(III) ions from aqueous solution

Facile Synthesis and Characterization of Chrysotile Nanotubes and Their Application for Lead(II) Removal from Aqueous Solution

Redistribution of Mg and Ni cations in crystal lattice of conical nanotube with chrysotile structure

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