Investigation of U(VI) adsorption properties of poly(trimesoyl chloride-co-polyethyleneimine)

Xie, Xiaoyun; Wang, Yanfei; Zhou, Weini; Chen, Can; Xiong, Zuhong

doi:10.1016/j.jssc.2021.121966

Cited by 18 publications

(2 citation statements)

References 31 publications

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“…As shown in Table S6, the positive values of ΔH° indicate that the adsorption process of Fe3O4-P-CMC/PAMAM towards U(VI) is endothermic [51,52]. The positive Compared to the Friedrich model, the absorption of U(VI) in Fe 3 O 4 -P-CMC/G1.5 series is better delineated by the Langmuir isotherm model, which has higher correlation coefficients (R 2 > 0.99), indicating a monolayer adsorption process [49]. Moreover, the maximum Langmuir adsorption capacity of Fe 3 O 4 -P-CMC/G1.5 series for U(VI) was 1238.49 mg•g −1 (G1.5-1), 1513.47 mg•g −1 (G1.5-2), and 1344.14 mg•g −1 (G1.5-3), whereas that of Fe 3 O 4 -CMC/G1.5 was 681.31 mg•g −1 .…”

Section: Adsorption Thermodynamicmentioning

confidence: 95%

A Phosphorylated Dendrimer-Supported Biomass-Derived Magnetic Nanoparticle Adsorbent for Efficient Uranium Removal

Ma,

Luo,

Han

et al. 2024

Nanomaterials

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A novel biomass-based magnetic nanoparticle (Fe3O4-P-CMC/PAMAM) was synthesized by crosslinking carboxymethyl chitosan (CMC) and poly(amidoamine) (PAMAM), followed by phosphorylation with the incorporation of magnetic ferric oxide nanoparticles. The characterization results verified the successful functionalization and structural integrity of the adsorbents with a surface area of ca. 43 m2/g. Batch adsorption experiments revealed that the adsorbent exhibited a maximum adsorption capacity of 1513.47 mg·g−1 for U(VI) at pH 5.5 and 298.15 K, with Fe3O4-P-CMC/G1.5-2 showing the highest affinity among the series. The adsorption kinetics adhered to a pseudo-second-order model (R2 = 0.99, qe,exp = 463.81 mg·g−1, k2 = 2.15×10−2 g·mg−1·min−1), indicating a chemically driven process. Thermodynamic analysis suggested that the adsorption was endothermic and spontaneous (ΔH° = 14.71 kJ·mol−1, ΔG° = −50.63 kJ·mol−1, 298. 15 K), with increasing adsorption capacity at higher temperatures. The adsorbent demonstrated significant selectivity for U(VI) in the presence of competing cations, with Fe3O4-P-CMC/G1.5-2 showing a high selectivity coefficient. The performed desorption and reusability tests indicated that the adsorbent could be effectively regenerated using 1M HCl, maintaining its adsorption capacity after five cycles. XPS analysis highlighted the role of phosphonate and amino groups in the complexation with uranyl ions, and validated the existence of bimodal U4f peaks at 380.1 eV and 390.1 eV belonging to U 4f7/2 and U 4f5/2. The results of this study underscore the promise of the developed adsorbent as an effective and selective material for the treatment of uranium-contaminated wastewater.

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Section: Adsorption Thermodynamicmentioning

confidence: 95%

A Phosphorylated Dendrimer-Supported Biomass-Derived Magnetic Nanoparticle Adsorbent for Efficient Uranium Removal

Ma,

Luo,

Han

et al. 2024

Nanomaterials

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“…After modification with PEI, a new peak at 285.1 eV appeared in the C 1s spectrum of SA@PEI, which may be due to the CN bond. 42 The change of the relative peak area of CN in the SA@PEI@WPU functional layer was due to the addition of WPU. (Figure 3c).…”

Section: Heavy Metal Pollution Purificationmentioning

confidence: 99%

Nature-Inspired Polyethylenimine-Modified Calcium Alginate Blended Waterborne Polyurethane Graded Functional Materials for Multiple Water Purification

Zhang

Wang

Akakuru

et al. 2022

ACS Appl. Mater. Interfaces

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In recent years, natural disasters such as hurricanes and floods have become more frequent, which usually leads to the pollution of drinking water. Drinking contaminated water may cause public health emergencies. The demand for healthy drinking water in disaster-affected areas is huge and urgent. Therefore, it is necessary to develop a simple water treatment technology suitable for emergencies. Inspired by nature, a fractional spray method was used to prepare graded purification material under mild conditions. The material consists of a calcium alginate isolation layer and a functional layer composed of calcium alginate, polyethylenimine, and water-based polyurethane, which can purify complex pollutants in water such as heavy metals, oils, pathogens, and micro/nano plastics through percolation. It does not require additional energy and can purify polluted water only under gravity. A disposable paper cup model was also designed, which can be used to obtain purified water by immersing in polluted water directly without other filtering devices. The test report shows that the water obtained from the paper cup was deeply purified. This design makes the material user-friendly and has the potential as a strategic material. This discovery can effectively improve the safety of drinking water after disasters and improve people's quality of life.

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Preparation of biochar@chitosan-polyethyleneimine for the efficient removal of uranium from water environment

Zhang

Mei

Shen

et al. 2023

Carbohydrate Polymers

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Investigation of U(VI) adsorption properties of poly(trimesoyl chloride-co-polyethyleneimine)

Cited by 18 publications

References 31 publications

A Phosphorylated Dendrimer-Supported Biomass-Derived Magnetic Nanoparticle Adsorbent for Efficient Uranium Removal

A Phosphorylated Dendrimer-Supported Biomass-Derived Magnetic Nanoparticle Adsorbent for Efficient Uranium Removal

Nature-Inspired Polyethylenimine-Modified Calcium Alginate Blended Waterborne Polyurethane Graded Functional Materials for Multiple Water Purification

Preparation of biochar@chitosan-polyethyleneimine for the efficient removal of uranium from water environment

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