Promising priority separation of europium from lanthanide by novel DGA-functionalized metal organic frameworks

Lin, Wanqing; Zhao, Zhigang; Yang, Fan; Liu, Zhaoli; Tan, Fengzhi; Xie, Meiying; Ma, Ying; Meng, Lingyi

doi:10.1016/j.mineng.2021.106831

Cited by 18 publications

(9 citation statements)

References 29 publications

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“…20 - 26 , and Supplementary Table 3 ). This greatly exceeds the capacity of most current adsorbents, such as CA@Fe 3 O 4 NPs 35 , KIT-6-1,3-PDDA 36 , MFC-O 37 , MIL-101-DGA 38 , and PEI800/ES-1/2.1 39 . Energy dispersive X-ray spectroscopy (EDS) mapping analysis confirms that Pr 3+ , Nd 3+ , Gd 3+ , and Dy 3+ entered the structures of the material with a uniform distribution throughout the samples (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 91%

Rationally designed nanotrap structures for efficient separation of rare earth elements over a single step

Hu,

Song,

Gao

et al. 2024

Nat Commun

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Extracting rare earth elements (REEs) from wastewater is essential for the growth and an eco-friendly sustainable economy. However, it is a daunting challenge to separate individual rare earth elements by their subtle differences. To overcome this difficulty, we report a unique REE nanotrap that features dense uncoordinated carboxyl groups and triazole N atoms in a two-fold interpenetrated metal-organic framework (named NCU-1). Notably, the synergistic effect of suitable pore sizes and REE nanotraps in NCU-1 is highly responsive to the size variation of rare-earth ions and shows high selectivity toward light REE. As a proof of concept, Pr/Lu and Nd/Er are used as binary models, which give a high separation factor of SFPr/Lu = 796 and SFNd/Er = 273, demonstrating highly efficient separation over a single step. This ability achieves efficient and selective extraction and separation of REEs from mine tailings, establishing this platform as an important advance for sustainable obtaining high-purity REEs.

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Section: Resultsmentioning

confidence: 91%

Rationally designed nanotrap structures for efficient separation of rare earth elements over a single step

Hu,

Song,

Gao

et al. 2024

Nat Commun

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“…The pseudo-first-order kinetic model and pseudo-second-order kinetic model of adsorption kinetics are expressed by Formula (5) and Formula (6), respectively [ 41 ]:

where C e refers to the concentration of ReO 4 − at equilibrium (mg/L); Q e and Q t are the adsorption capacity (mg/g) of ReO 4 − at equilibrium and at time t (min), respectively; and k 1 and k 2 are the pseudo-first-order and pseudo-second-order kinetic model constants.…”

Section: Methodsmentioning

confidence: 99%

Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

Qin

Yinqiao

Xie

et al. 2022

Toxics

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The treatment of radioactive wastewater is one of the major problems in the current research. With the development of nuclear energy, the efficient removal of 99TcO4− in radioactive wastewater has attracted the attention of countries all over the world. In this study, a novel functional polyamide polymer p-(Amide)-PAM was synthesized by the two-step method. The experimental results show that p-(Amide)-PAM has good adsorptive properties for 99TcO4−/ReO4− and has good selectivity in the nitric acid system. The kinetics of the reaction of p-(Amide)-PAM with 99TcO4−/ReO4− was studied. The results show that p-(Amide)-PAM has a fast adsorption rate for 99TcO4−/ReO4−, the saturated adsorption capacity reaches 346.02 mg/g, and the material has good reusability. This new polyamide-functionalized polyacrylamide polymer material has good application prospects in the removal of 99TcO4− from radioactive wastewater.

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“…4,5 Among these, adsorption techniques have received a wide range of interest in recent years due to their relatively low cost, simplicity, superior selectivity, and higher efficiency. 6,7 Various adsorbents are applicable for this challenge such as double layered hydroxides, layered metal suldes, activated carbon, carbon nanotubes, clay minerals, composite materials, zeolites, and metal-organic frameworks (MOFs). [8][9][10] Recently, MOFs were used by many authors in this eld.…”

Section: Introductionmentioning

confidence: 99%

A novel strontium-based MOF: synthesis, characterization, and promising application in removal of ^152+154Eu from active waste

et al. 2022

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Promising priority separation of europium from lanthanide by novel DGA-functionalized metal organic frameworks

Cited by 18 publications

References 29 publications

Rationally designed nanotrap structures for efficient separation of rare earth elements over a single step

Rationally designed nanotrap structures for efficient separation of rare earth elements over a single step

Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

A novel strontium-based MOF: synthesis, characterization, and promising application in removal of ^152+154Eu from active waste

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Promising priority separation of europium from lanthanide by novel DGA-functionalized metal organic frameworks

Cited by 18 publications

References 29 publications

Rationally designed nanotrap structures for efficient separation of rare earth elements over a single step

Rationally designed nanotrap structures for efficient separation of rare earth elements over a single step

Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

A novel strontium-based MOF: synthesis, characterization, and promising application in removal of 152+154Eu from active waste

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Product

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A novel strontium-based MOF: synthesis, characterization, and promising application in removal of ^152+154Eu from active waste