Selenium(VI) and copper(II) adsorption using polyethyleneimine-based resins: Effect of glutaraldehyde crosslinking and storage condition

Wang, Shengye; Xiao, Ke Feng; Mo, Yayuan; Yang, Bo; Vincent, Thierry; Faur, Catherine; Guibal, Eric

doi:10.1016/j.jhazmat.2019.121637

Cited by 81 publications

(26 citation statements)

References 38 publications

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“…S2): (a) a high binding energy (399.1 eV) corresponding to amine or amide groups and (b) a lower binding energy (398.8 eV) attributed to nitrogen in the tertiary amine groups (Ma et al, 2014). This is consistent with the characterization of PEI-GLA resins (Wang et al, 2020a), as a confirmation of the successful decoration of PEI-GLA.…”

Section: Characterizationssupporting

confidence: 79%

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Batch sorption and fixed-bed elution for Pd recovery using stable amine-functionalized melamine sponge

Zhong

et al. 2022

Journal of Cleaner Production

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Section: Characterizationssupporting

confidence: 79%

“…The peak at 1453 cm − 1 , corresponding to vibration mode of the amino C-N-H, become wider and its intensity also increases slightly. This could be due to the overlapping of symmetric stretching vibrations of carboxylate groups (Wang et al, 2020a), which is a support for the latter reason.…”

Section: The Improvement Of Modification On Pd(ii) Sorptionmentioning

confidence: 74%

Batch sorption and fixed-bed elution for Pd recovery using stable amine-functionalized melamine sponge

Zhong

et al. 2022

Journal of Cleaner Production

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“…As shown in Figure c,d, the FT-IR spectrum of TPE-C 3 N 4 demonstrated the typical peak pattern of melon-based carbon nitride frameworks. After integration of PEI and the Rh complex, a small peak at 1480 cm –1 was observed belonging to the in-plane bending vibration of -CH 2 , confirming the assembly of PEI on TPE-C 3 N 4 …”

Section: Resultsmentioning

confidence: 65%

Construction of Functionally Compartmental Inorganic Photocatalyst–Enzyme System via Imitating Chloroplast for Efficient Photoreduction of CO₂ to Formic Acid

Tian

Zhou

Zong

et al. 2020

ACS Appl. Mater. Interfaces

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Inorganic photocatalyst−enzyme systems are a prominent platform for the photoreduction of CO 2 to valueadded chemicals and fuels. However, poor electron transfer kinetics and enzyme deactivation by reactive oxygen species in the photoexcitation process severely limit catalytic efficiency. In chloroplast, enzymatic CO 2 reduction and photoexcitation are compartmentalized by the thylakoid membrane, which protects enzymes from photodamage, while the tightly integrated photosystem facilitates electron transfer, promoting photocatalysis. By mimicking this strategy, we constructed a novel functionally compartmental inorganic photocatalyst−enzyme system for CO 2 reduction to formate. To accomplish efficient electron transfer, we first synthesized an integrated artificial photosystem by conjugation of the cocatalyst (a Rh complex) onto thiophene-modified C 3 N 4 (TPE-C 3 N 4 ), demonstrating an NADH regeneration rate of 9.33 μM•min −1 , 2.33 times higher than that of a homogeneous counterpart. The enhanced NADH regeneration activity was caused by the tightly conjugated structure of the artificial photosystem, enabling rapid electron transfer from TPE-C 3 N 4 to the Rh complex. To protect formate dehydrogenase (FDH) from photoinduced deactivation, FDH was encapsulated into MAF-7, a metal−organic framework (MOF) material, to compartmentalize FDH from the toxic photoexcitation process, similar to the function of the thylakoid membrane. Moreover, the triazole linkers of MAF-7 possess both hydrophilicity and pH-buffering capacity providing a stable microenvironment for FDH, which could enhance enzyme stability in photosynthesis. The synergy between the enhanced electron transfer of TPE-C 3 N 4 for NADH cofactor regeneration and MOFprotection of the redox enzyme enables the construction of a functionally compartmental inorganic photocatalyst−enzyme association system, promoting CO 2 photoconversion to formic acid with a yield of 16.75 mM after 9 h of illumination, 3.24 times greater than that of the homogeneous reaction counterpart.

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“…Two small peaks appear at 2328 cm −1 and 2374 cm −1 ; they may be attributed to O=C=O stretching in carbon dioxide. Wang et al [42] reported the sorption of CO 2 on similar PEI-algal based materials. After uranyl sorption, substantial changes are observed: a new broad band appears at 3116 cm −1 .…”

Section: Xps Analysismentioning

confidence: 99%

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

Hamza

Mubark

Wei

et al. 2020

Gels

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The necessity to recover uranium from dilute solutions (for environmental/safety and resource management) is driving research towards developing new sorbents. This study focuses on the enhancement of U(VI) sorption properties of composite algal/Polyethylenimine beads through the quaternization of the support (by reaction with glycidyltrimethylammonium chloride). The sorbent is fully characterized by FTIR, XPS for confirming the contribution of protonated amine and quaternary ammonium groups on U(VI) binding (with possible contribution of hydroxyl and carboxyl groups, depending on the pH). The sorption properties are investigated in batch with reference to pH effect (optimum value: pH 4), uptake kinetics (equilibrium: 40 min) and sorption isotherms (maximum sorption capacity: 0.86 mmol U g−1). Metal desorption (with 0.5 M NaCl/0.5 M HCl) is highly efficient and the sorbent can be reused for five cycles with limited decrease in performance. The sorbent is successfully applied to the selective recovery of U(VI) from acidic leachate of uranium ore, after pre-treatment (cementation of copper, precipitation of rare earth elements with oxalate, and precipitation of iron). A pure yellow cake is obtained after precipitation of the eluate.

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Selenium(VI) and copper(II) adsorption using polyethyleneimine-based resins: Effect of glutaraldehyde crosslinking and storage condition

Cited by 81 publications

References 38 publications

Batch sorption and fixed-bed elution for Pd recovery using stable amine-functionalized melamine sponge

Batch sorption and fixed-bed elution for Pd recovery using stable amine-functionalized melamine sponge

Construction of Functionally Compartmental Inorganic Photocatalyst–Enzyme System via Imitating Chloroplast for Efficient Photoreduction of CO₂ to Formic Acid

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

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Selenium(VI) and copper(II) adsorption using polyethyleneimine-based resins: Effect of glutaraldehyde crosslinking and storage condition

Cited by 81 publications

References 38 publications

Batch sorption and fixed-bed elution for Pd recovery using stable amine-functionalized melamine sponge

Batch sorption and fixed-bed elution for Pd recovery using stable amine-functionalized melamine sponge

Construction of Functionally Compartmental Inorganic Photocatalyst–Enzyme System via Imitating Chloroplast for Efficient Photoreduction of CO2 to Formic Acid

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

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Product

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Construction of Functionally Compartmental Inorganic Photocatalyst–Enzyme System via Imitating Chloroplast for Efficient Photoreduction of CO₂ to Formic Acid