Antimicrobial polymer contained adsorbent: A promising candidate with remarkable anti-biofouling ability and durability for enhanced uranium extraction from seawater

Li, Hao; He, Ningning; Cheng, Chong; Dong, Hao; Wen, Jun; Wang, Xiaolin

doi:10.1016/j.cej.2020.124273

Cited by 89 publications

(14 citation statements)

References 60 publications

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“…Sample a is this PLMR ( W PAO / W Resin = 17.8/100) and the other samples b–r are existing AO-based adsorbents. B, c, d, e, f, g, h, i, j, k, l, ] m, n, o, p, q, and r …”

Section: Resultsmentioning

confidence: 99%

“…However, the ultralow content (3–4 mg/T) of the uranium element and the complicated marine environment severely restrict highly effective extraction of uranium from seawater on a large scale. , The uranium adsorption technique has aroused growing focus and is a most promising method to extract uranium from seawater for large-scale industrialization, compared with other strategies including chemical/electrochemical sedimentation, , ion exchange, , and liquid extraction . Presently, a variety of uranium adsorption materials have been explored, such as inorganic adsorbents, − organic/polymeric adsorbents, − many types of nanostructure materials (including MOFs, − PAFs, COFs, POPs, and the latest MXenes with 2D nanostructure , ), and most recently biomass adsorbents, − and so on.…”

Section: Introductionmentioning

confidence: 99%

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Supramolecularly Poly(amidoxime)-Loaded Macroporous Resin for Fast Uranium Recovery from Seawater and Uranium-Containing Wastewater

Wen

Sun

Liu

et al. 2021

ACS Appl. Mater. Interfaces

108

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Uranium is an extremely abundant resource in seawater that could supply nuclear fuel for over the long-term, but it is tremendously difficult to extract. Here, a new supramolecular poly(amidoxime) (PAO)-loaded macroporous resin (PLMR) adsorbent has been explored for highly efficient uranium adsorption. Through simply immersing the macroporous resin in the PAO solution, PAOs can be firmly loaded on the surface of the nanopores mainly by hydrophobic interaction, to achieve the as-prepared PLMR. Unlike existing amidoxime-based adsorbents containing many inner minimally effective PAOs, almost all the PAOs of PLMR have high uranium adsorption efficiency because they can form a PAO-layer on the nanopores with molecular-level thickness and ultrahigh specific surface area. As a result, this PLMR has highly efficient uranium adsorbing performance. The uranium adsorption capacity of the PLMR was 157 mg/g (the U PAO in the PLMR was 1039 mg/g), in 32 ppm uranium-spiked seawater for 120 h. Additionally, uranium in 1.0 L 100 ppb U-spiked both water and seawater can be removed quickly and the recovery efficiency can reach 91.1 ± 1.7% and 86.5 ± 1.9%, respectively, after being filtered by a column filled with 200 mg PLMR at 300 mL/min for 24 h. More importantly, after filtering 200 T natural seawater with 200 g PLMR for only 10 days, the uranium-uptake amount of the PLMR reached 2.14 ± 0.21 mg/g, and its average uranium adsorption speed reached 0.214 mg/(g·day) which is very fast among reported amidoxime-based adsorbents. This new adsorbent has great potential to quickly and massively recover uranium from seawater and uranium-containing wastewater. Most importantly, this work will provide a simple but general strategy to greatly enhance the uranium adsorption efficiency of amidoxime-functionalized adsorbents with ultrahigh specific surface area via supramolecular interaction, and even inspire the exploration of other adsorbents.

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“…Sample a is this PLMR ( W PAO / W Resin = 17.8/100) and the other samples b–r are existing AO-based adsorbents. B, c, d, e, f, g, h, i, j, k, l, ] m, n, o, p, q, and r …”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Supramolecularly Poly(amidoxime)-Loaded Macroporous Resin for Fast Uranium Recovery from Seawater and Uranium-Containing Wastewater

Wen

Sun

Liu

et al. 2021

ACS Appl. Mater. Interfaces

108

View full text Add to dashboard Cite

show abstract

“…(a, b) U-Adsorbing performance comparison of AUPM and blank membrane without Q-CS, within the seawater that was not filtered to remove bacteria/microorganisms for 25 d. (c) Comparison of the U-absorbing rate between this AUPM and existing amidoxime-functionalized adsorbents within seawater. ,,,,,− ,,,,, …”

Section: Resultsmentioning

confidence: 99%

Antibiofouling Ultrathin Poly(amidoxime) Membrane for Enhanced U(VI) Recovery from Wastewater and Seawater

Sun

Liu

Wen

et al. 2021

ACS Appl. Mater. Interfaces

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Although eco-friendly amidoxime-based adsorbents own an excellent uranium (U)-adsorption capacity, their U-adsorption efficiency is commonly reduced and even damaged by the biological adhesion from bacteria/microorganisms in an aqueous environment. Herein, we present an antibiofouling ultrathin poly(amidoxime) membrane (AUPM) with highly enhanced U-adsorption performance, through dispersing the quaternized chitosan (Q-CS) and poly(amidoxime) in a cross-linked sulfonated cellulose nanocrystals (S-CNC) network. The cross-linked S-CNC not only can elevate the hydrophilicity to improve the U-adsorption efficiency of AUPM but also can enhance the mechanical strength to form a self-supporting ultrathin membrane (17.21 MPa, 10 μm thickness). More importantly, this AUPM owns a good antibiofouling property, owing to the broad-spectrum antibacterial quaternary ammonium groups of the Q-CS. As a result, within the 1.00 L of low-concentration (100 ppb) U-added pure water (pH ≈ 5) and seawater (pH ≈ 8) for 48 h, 30 mg of AUPM can recover 93.7% U and 91.4% U, respectively. Furthermore, compared with the U-absorption capacity of a blank membrane without the Q-CS, that of AUPM can significantly increase 37.4% reaching from 6.39 to 8.78 mg/g after being in natural seawater for only 25 d. Additionally, this AUPM can still maintain almost constant tensile strength during 10 cycles of adsorption–desorption, which indicates the relatively long-term usability of AUPM. This AUPM will be a promising candidate for highly efficient and large-scale U-recovery from both U-containing waste freshwater/seawater and natural seawater, which will be greatly helpful to deal with the U-pollution and enrich U for the consumption of nuclear power. More importantly, the work will provide a new convenient but universal strategy to fabricate new highly enhanced low-cost U-adsorbents, through the introduction of both an antibacterial property and a high mechanical performance, which will be a good reference for the design of new highly efficient U-adsorbents.

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“…5 During the last few decades, growing attention has been paid to develop antibacterial polymer composite thanks to their various advantages, including biocompatibility, cost efficiency, and durable antibacterial activity. 6 Chitosan is a natural polymer with both biocompatibility and antibacterial property, which inhibits the synthesis of mRNA and protein via penetration into the nuclei of bacteria and binding with DNA. 7,8 Although chitosan-based films exhibit good bactericidal activity, their poor mechanical properties, such as, tensile strength and flexibility, restrict their biomedical applications, especially as wound dressings.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and antibacterial activity of chitosan/silicone rubber filled zeolite, silver, and copper nanocomposites againstPseudomonas aeruginosaand methicillin‐resistantStaphylococcus aureus

Rezazadeh

Kianvash

2021

J of Applied Polymer Sci

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The ongoing emergence of antibiotic‐resistant bacteria has become one of the biggest threats to global health and development today. Pseudomonas aeruginosa and methicillin‐resistant Staphylococcus aureus (MRSA) are important antibiotic‐resistant bacteria due to their increasing resistance to a broad array of antimicrobial agents. Herein, we developed a novel antibacterial nanocomposite based on chitosan and liquid silicone rubber filled zeolite‐A, Ag, and Cu nanoparticles with remarkable antibacterial activity against P. aeruginosa and MRSA. The antibacterial activity of the nanocomposite was studied by disc diffusion and broth culture methods. Besides, the mechanical properties, wetting behavior, and chemical structure of the present nanocomposite were also investigated. The results exhibited that the inhibition zone diameter of the nanocomposite for P. aeruginosa and MRSA were 40 and 27 mm, respectively. It also took approximately 1 h to inhibit the growth of the tested bacteria. The nanocomposite sample with a thickness of around 1 mm showed an elastic elongation of nearly 49% and a contact angle of roughly 120°. Thus, the present nanocomposite was found to be useful in killing and inhibiting the growth of P. aeruginosa and MRSA, and it could also be qualified as a superior elastic and hydrophobic material.

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Antimicrobial polymer contained adsorbent: A promising candidate with remarkable anti-biofouling ability and durability for enhanced uranium extraction from seawater

Cited by 89 publications

References 60 publications

Supramolecularly Poly(amidoxime)-Loaded Macroporous Resin for Fast Uranium Recovery from Seawater and Uranium-Containing Wastewater

Supramolecularly Poly(amidoxime)-Loaded Macroporous Resin for Fast Uranium Recovery from Seawater and Uranium-Containing Wastewater

Antibiofouling Ultrathin Poly(amidoxime) Membrane for Enhanced U(VI) Recovery from Wastewater and Seawater

Preparation, characterization, and antibacterial activity of chitosan/silicone rubber filled zeolite, silver, and copper nanocomposites againstPseudomonas aeruginosaand methicillin‐resistantStaphylococcus aureus

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