Preliminary Research on the Uptake Behavior of Ammonium Molybdophosphate for Cesium and the Corresponding Structural Transformation

Huang, Zhao; Zhang, Dong; Tan, Zhao

doi:10.4028/www.scientific.net/amr.535-537.2191

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…In addition, an analysis of published data shows that ammonium salts of phosphorousmolibdenum heteropolyacid under certain conditions, can be used for the extraction of liquid radioactive waste of the lanthanides (Ce) and actinides (Am , Np) [16][17][18][19] . High selectivity of HPA salts with respect to radionuclides and high stability of natural ionizing radiation to the ion exchangers allowed using them effectively for the extraction of cesium from sea water, contaminated as a result of the accident at the Fukushima-I [16,17].…”

Section: Resultsmentioning

confidence: 99%

Acid Activation of Natural Zeolite with High Content of Iron Oxides in Creation of Selective Sorbents and Catalysts

et al. 2017

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Abstract. The paper studies the influence of the nature of modifying acids (mineral, organic and heteropolyacids), and their combination on the composition and structure of the iron oxide rich clinoptilolit from Shankanay field in Kazakhstan for creation of selective catalysts in hydracarbon processing and sorbents for extracting ions of lanthanide and actinide elements. It is shown that sequential processing of natural zeolite in optimal conditions, by hydrochloric and sulfosalicylic acids lead to intensive decationization and dealumination, as well as maximum removal of iron ions from the zeolite framework without destroying it. It is found that the combination of activated clinoptilolite with hydrochloric acid and phosphotungstic heteropolyacid contributes to obtain catalyst system with high surface area and acidity.

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Section: Resultsmentioning

confidence: 99%

Acid Activation of Natural Zeolite with High Content of Iron Oxides in Creation of Selective Sorbents and Catalysts

et al. 2017

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“…Along with gel synthesis, AMP powder was also synthesized by following the procedure given in ref and is given in detail in the Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

Selective and Fast Separation of Cesium Ions by In Situ Synthesized Ammonium Molybdophosphate-Like Moieties in a Polymer Gel

Mhatre

Agarwal

Kumar

et al. 2022

ACS Appl. Polym. Mater.

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The objective of the present study is to develop a selective and fast separation media for cesium ions for nuclear fission studies. Here, ammonium molybdophosphate (AMP)-like moieties have been synthesized in situ in a polymer gel with bis[2-(methacryloyloxy)ethyl] phosphate as the monomer. Two types of ethyl] phosphate) and poly (bis[2-(methacryloyloxy)ethyl] phosphate-co-acrylic acid), have been prepared using in situ UV polymerization and characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and Raman spectroscopy. The successful formation of the Keggin structure of [PMo 12 O 40 ] 3− in the modified gels has been confirmed by the presence of its distinctive spectral signatures. The AMP-modified gels have been shown to extract Cs + at all of the studied acid concentrations (0.5−8 mol L −1 ) and are found to be selective for Cs + in the presence of other fission products (Ba 2+ , Eu 3+ , Ce 3+ ) and even in the presence of bulk lead nitrate. A selectivity ratio as high as ∼47 for cesium ion with respect to other fission products has been obtained. The kinetics of Cs + ion uptake has been observed to be fast with >90% uptake in ∼8 s, which is almost two orders of magnitude faster than the Cs + adsorbents/extraction methods reported so far to the best of our knowledge. This fast kinetics can be attributed to the hydrophilic and porous nature of the synthesized polymer gel. The AMPmodified gels were successfully tested for the selective and fast separation of short-lived cesium isotopes produced in neutroninduced fission of 235 U and allowed us to experimentally determine the half-life of one of the short-lived isotope of cesium, i.e., 140 Cs, which was found to be in excellent agreement with the literature-reported value (t 1/2 = 63.7 s). This is a significant improvement over previous studies and can have a variety of interesting applications not only in nuclear physics studies but also for the separation processes where Cs + needs to be separated in a minimum time scale.

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Ammonium molybdophosphate functionalized copolymer micelles for efficient Cs+ adsorption

Zheng²,

Zhou

et al. 2021

J Polym Res

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Preliminary Research on the Uptake Behavior of Ammonium Molybdophosphate for Cesium and the Corresponding Structural Transformation

Cited by 4 publications

References 11 publications

Acid Activation of Natural Zeolite with High Content of Iron Oxides in Creation of Selective Sorbents and Catalysts

Acid Activation of Natural Zeolite with High Content of Iron Oxides in Creation of Selective Sorbents and Catalysts

Selective and Fast Separation of Cesium Ions by In Situ Synthesized Ammonium Molybdophosphate-Like Moieties in a Polymer Gel

Ammonium molybdophosphate functionalized copolymer micelles for efficient Cs+ adsorption

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