Strontium adsorption on tantalum-doped hexagonal tungsten oxide

Li, Xingliang; Mu, Wanjun; Xie, Xiang; Liu, Bijun; Tang, Hui; Zhou, Guanhong; Wei, Hongyuan; Yuan, Jiugang; Luo, Shi-Zhong

doi:10.1016/j.jhazmat.2013.11.032

Cited by 61 publications

(25 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The OH stretching bands of the extracted species were shifted to lower frequencies, which implied that hydroxyl groups were coordinated with metal ions. Previously examined complexes of p-tert-butylcalix [5]arene hexacarboxylic acid ligand with Cu(II) ion [38] showing that C=O stretching band of ligand-Cu(II) changed intensely and positively. In this experiment, the absorption bands at 1313 and 1156 cm´1 correspond to asymmetrical and symmetrical sulfonyl stretching vibrations of SC4A, respectively.…”

Section: Function Of Groups and Coordination Featurementioning

confidence: 99%

“…The results are listed in Table 5. They showed that D Cs remained approximately invariant when the irradiated dose was between 0 and 1.0ˆ10 5 Gy and then increased when the irradiated dose was higher than 1.0ˆ10 5 Gy. This may be due to the lone pair electrons of oxygen in the ketone group, which can enhance the extraction ability of SC4A for Cs(I).…”

Section: Irradiation Stability and Thermal Stability Of Sc4amentioning

confidence: 99%

“…137 Cs is an analog of potassium that is easily incorporated in living organisms [3], and 90 Sr can be introduced into the food chain, which seriously threatens human health [4]. They also have an adverse impact on ecology [5,6]. Thus, removal of radioactive contaminants from contaminated water has become a significant environmental matter in recent years.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Extraction Property of p-tert-Butylsulfonylcalix[4]arene Possessing Irradiation Stability towards Cesium(I) and Strontium(II)

et al. 2016

View full text Add to dashboard Cite

Solvent extraction behavior of p-tert-butylsulfonylcalix [4]arene (SC4A) towards Cs(I) and Sr(II) from aqueous solutions was studied with respect to the effects of contact time, pH value, SC4A concentration, nitrate concentration and temperature. The extraction of Na(I), K(I), Mg(II), Ca(II), Ba(II), Pb(II), Cd(II), Zn(II), Co(II), Ni(II), and Ce(III) was also investigated. It was demonstrated that SC4A can sequester both Cs(I) and Sr(II) efficiently from aqueous solutions. According to extraction experiments, Fourier transform infrared and 1 H nuclear magnetic resonance analysis of the metal-SC4A complex, authors proposed a possible mechanism involving formation of an adjustable cavity from two SC4A molecules for the complexation of one alkaline earth metal ion, and the size of the adjustable cavity changes depending on the ion within an appropriate range. Irradiation stability of the SC4A was tested, the results indicated that the main structure of SC4A remained unchanged when the temperature was below 400˝C, and SC4A maintains excellent extraction ability for Cs(I) and Sr(II) under an irradiation dose of 1.0ˆ10 4~1 .1ˆ10 6 Gy.

show abstract

Section: Function Of Groups and Coordination Featurementioning

confidence: 99%

Section: Irradiation Stability and Thermal Stability Of Sc4amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Extraction Property of p-tert-Butylsulfonylcalix[4]arene Possessing Irradiation Stability towards Cesium(I) and Strontium(II)

et al. 2016

View full text Add to dashboard Cite

show abstract

“…To confirm the actual rate-controlling mechanism in the adsorption process of Sr 2? , the kinetic data were analyzed using the kinetic equation developed by Boyd et al [24].…”

Section: Boyd Kinetic Plotmentioning

confidence: 99%

Preparation of silica-based titanate adsorbents and application for strontium removal from radioactive contaminated wastewater

Chen

Wei

et al. 2015

J Radioanal Nucl Chem

View full text Add to dashboard Cite

K 2 Ti 6 O 13 /SiO 2 adsorbents were prepared by sol-gel method and good microcrystalline K 2 Ti 6 O 13 phases were formed at 500°C. From EDS of the adsorbents before and after adsorption of Sr 2? it showed that there was ionexchange reaction between K ? and Sr 2? . Experimental data on adsorption isotherms were best fit by the Freundlich and Langmuir-Freundlich model. The experimental data indicated that the pseudo-second order kinetic equation was best fit for both single Sr 2? solution and simulated Fukushima wastewater. The pH approaching to neutral displayed a better adsorption behavior for Sr 2? solution. The breakthrough capacity for treatment of Fukushima wastewater increased with decreasing flow rate and increasing bed diameter.

show abstract

“…18 For instance, Li et al 19 synthesized tantalum (Ta)-doped hexagonal tungsten oxide to increase the capacity of hexagonal tungsten (hex-WO 3 ) to adsorb strontium ions (Sr 2+ ). 19 Chromium (Cr)-doped zinc oxide (ZnO) nanoparticles were prepared to adsorb methyl orange; their adsorption capacity was larger than that of zinc oxide. 20 Although the performance of materials was improved by doping, there are no reports about the relation between the pore structure and dopant, as far as the authors know.…”

Section: Introductionmentioning

confidence: 99%

Preparation of porous Mn-doped CuO microplates and enhanced adsorption performance

LiYao-yin

WangXin-yue

ZhuJian-fei

et al. 2017

Surface Innovations

View full text Add to dashboard Cite

Porous manganese (Mn)-doped copper (II) oxide (CuO) microplates were synthesized by a facile hydrothermal method. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller N 2 adsorption-desorption analysis and Fourier transform infrared spectroscopy. It is shown that the morphologies of samples can be transformed from hierarchical porous microspheres to microplates by doping with manganese ions. The manganese-doped copper (II) oxide (10%) has a wide pore size distribution from micropore to macropore, and its surface area is 16·82 m 2 /g, which is 2·4 times that of copper (II) oxide microspheres (6·92 m 2 /g). It shows excellent adsorption properties for potassium ethyl xanthate. The saturated adsorption capacity of porous manganese-doped copper (II) oxide (10%) microplates for potassium ethyl xanthate is 5219 mg/g, which is 6·4 times that of copper (II) oxide microspheres (813 mg/g). The excellent adsorption property is mainly attributed to the intrinsic structure and the large specific surface area. This approach is expected to be extended to the preparation of other porous materials.Langmuir constrants m mass of the sample (g) q e adsorption capacity (mg/g) V volume of solution

show abstract

Strontium adsorption on tantalum-doped hexagonal tungsten oxide

Cited by 61 publications

References 70 publications

Extraction Property of p-tert-Butylsulfonylcalix[4]arene Possessing Irradiation Stability towards Cesium(I) and Strontium(II)

Extraction Property of p-tert-Butylsulfonylcalix[4]arene Possessing Irradiation Stability towards Cesium(I) and Strontium(II)

Preparation of silica-based titanate adsorbents and application for strontium removal from radioactive contaminated wastewater

Preparation of porous Mn-doped CuO microplates and enhanced adsorption performance

Contact Info

Product

Resources

About