New heterogeneous synthesis of mixed Ti-Ca-Mg phosphates as efficient sorbents of 137Cs, 90Sr and 60Co radionuclides

Иванец, А. И.; Шашкова, И. Л.; Китикова, Н. В.; Маслова, М. В.; Mudruk, Natalia

doi:10.1016/j.jtice.2019.09.001

Cited by 19 publications

(4 citation statements)

References 35 publications

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“…Because calcium-phosphate is acid-sensitive (Ivanets et al, 2019), after the CL is delivered to the cellular endosome, the late endosome's acidic environment will dissolve the calciumphosphate core (Li et al, 2010). It had been proved that calcium ions of calcium-phosphate lipid released more with a lower pH (Tang et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Fabrication and Characterization of Calcium-Phosphate Lipid System for Potential Dental Application

et al. 2020

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Lipid has been widely studied as a vehicle and loading vector, but there have been no reports of any such related application in the dental field. The purpose of this research was to fabricate and characterize a nano-size calcium-phosphate lipid (CL) system as a potential vehicle in dental regeneration study, wherein the biocompatibility with dental pulp stem cells (DPSCs) was evaluated. The effect of CL on DPSCs proliferation was analyzed by a CCK-8 assay, and the anti-inflammatory effect was investigated by quantitative polymerase chain reaction (qPCR). Moreover, the effect of CL on odontogenic differentiation of inflamed DPSCs (iDPSCs) was studied by Alizarin red staining, tissue-non-specific alkaline phosphatase (TNAP) staining, qPCR, and western blot analyses. The results of this study showed that CL did not affect the proliferation of DPSCs, it down-regulated the inflammatory-associated markers (IL-1β, IL-6, TNF-α, COX-2) of DPSCs treated with Escherichia coli lipopolysaccharide (LPS), and enhanced the in-vitro odontogenic differentiation potential of iDPSCs. This novel biomaterial has a broad application prospect for its bioactivity and flexible physical property, and thus represents a promising pulpal regeneration material.

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Section: Discussionmentioning

confidence: 99%

Fabrication and Characterization of Calcium-Phosphate Lipid System for Potential Dental Application

et al. 2020

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“…Previously, we were the first to synthesize composite materials based on mixed Ti-Ca-Mg phosphates from dolomite as a natural raw material and titanyl-diammonium sulfate synthesized from waste products of apatit-nefelin ores. The high efficiency of the obtained sorbents was shown in model LRW treatment containing a mixture of 137 Cs, 90 Sr and 60 Co radionuclides [25]. Vary the ratio of Ti/(Ca-Mg) in phosphate sorbents allows to change selectivity to each of the radionuclides.…”

Section: Introductionmentioning

confidence: 94%

“…[28] were used as starting materials for the preparation of Ti-Ca-Mg composite phosphates. Further, PD-1 or PD-2 samples was suspended in aqueous solution of titanyl-diammonium sulfate (NH 4 ) 2 TiO(SO 4 ) 2 •H 2 O with 3.85 wt% concentration without pH correction [29,30] at various V/m ratios under constant stirring at a temperature of 25 °C for 24 h. Samples of Ti-Ca-Mg phosphates were obtained with a ratio of Ti/(Ca + Mg) in a reaction mixture of 10.0, 20.0, 33.0 and 60.0 wt% and marked as PD-1-1 (PD-2-1), PD-1-2 (PD-2-2), PD-1-3 (PD-2-3), PD-1-4 (PD-2-4), respectively [25].…”

Section: Introductionmentioning

confidence: 99%

Sorption of stable and radioactive Cs(I), Sr(II), Co(II) ions on Ti–Ca–Mg phosphates

Иванец

Milyutin

Шашкова

et al. 2020

J Radioanal Nucl Chem

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In this paper, we studied the features of stable and radioactive Cs(I), Sr(II) and Co(II) ions sorption on Ti-Ca-Mg phosphates. The significant differences in the sorption of macro quantities of stable Cs + , Sr 2+ and Co 2+ ions and trace concentrations of 137 Cs, 90 Sr and 60 Co radionuclides were found. It has to be taken into account for evaluation the effectiveness of sorbents for the treatment of real liquid radioactive waste. Comparative studies with industrial sorbents have shown that the synthesized in this study mixed Ti-Ca-Mg phosphates are promising materials for one-stage treatment of liquid radioactive waste with complex chemical and radionuclide composition.

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“…Тонкоизмельченный минерал доломит (карбонаты Ca и Mg) рекомендуют использовать для очистки воды от нефти [8,9]. При химической обработке доломита раствором фосфорной кислоты [10] получают сорбент, включающий фосфаты Ca и Mg. В работе [11] совместно с фосфорной кислотой добавляют кристаллические соединения сульфата титана(IV) или его раствор. Присутствие фосфата титана в композиции значительно повышает сорбционные свойства синтезированных композиций [12].…”

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Obtaining the Silicon-Containing Titanium Phosphate Under Heterogeneous Synthesis Conditions

2022

Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.

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The authors investigated the synthesis of composite materials produced by not simply mixing the components mechanically. The materials are chemically derived on the basis that the combined action of the beneficial properties of such compositions significantly outweighs the action of each component due to synergistic effects. For this purpose, a titanosilicate precursor, TiO2∙nSiO2 (ТSP), synthesized from an accessible technogenic waste containing the mineral titanite (CaSiTiO5) was used. Researches were carried out in the heterogeneous system TiO2∙SiO2-H3PO4-H2O. And the innovative method was developed for obtaining silicon-containing titanophosphate of the composition TiOHPO4∙2H2O or TiO(H2PO4)2·2H2O, depending on the structural features of TSP, as well as on the synthesis conditions - phosphoric acid concentration and temperature. The influence of structural characteristics of titanosilicate precipitate on its chemical activity in heterogeneous synthesis of silicon-containing titanophosphate was studied. The synthesised mesaporous material is a powder with a particle size of 5-15 µm. The correlation between the phase composition of the synthesised compositions and the surface properties of their particles is shown. The sorption capacity of the obtained titanophosphates in the static mode was determined. In particular, the more titanophosphate phase is in the composition of the composition, the higher are the values of Ssp and Vpore particles and therefore their sorption capacity is higher. When comparing the sorption properties of synthesised and conventional sorbents, ion exchange resins and titanium phosphates, used for purification of liquid effluents from Sr2+, Cs+, Co2+ cations, comparable indicators were obtained. The results have shown that the use of silicon-containing titanium phosphate for the treatment of liquid effluents containing non-ferrous metal cations as well as radionuclides may be promising.

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New heterogeneous synthesis of mixed Ti-Ca-Mg phosphates as efficient sorbents of 137Cs, 90Sr and 60Co radionuclides

Cited by 19 publications

References 35 publications

Fabrication and Characterization of Calcium-Phosphate Lipid System for Potential Dental Application

Fabrication and Characterization of Calcium-Phosphate Lipid System for Potential Dental Application

Sorption of stable and radioactive Cs(I), Sr(II), Co(II) ions on Ti–Ca–Mg phosphates

Obtaining the Silicon-Containing Titanium Phosphate Under Heterogeneous Synthesis Conditions

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