Water-insoluble hydrophilic polysulfides as microfibrous composites towards highly effective and practical Hg2+ capture

Limjuco, Lawrence A.; Nisola, Grace M.; Parohinog, Khino J.; Chung, Wook-Jin; Lee, Seong‐Poong; Kim, Hern

doi:10.1016/j.cej.2019.122216

Cited by 34 publications

(59 citation statements)

References 50 publications

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“…These sulfur polymers improved mercury uptake by virtue of their hydrophilicity, in comparison to hydrophobic sulfur polymers. [62][63] These sulfur polymers were soluble in DMF and could be processed by electrospinning into micro-and nanofibrous mats when a polyacrylonitrile (PAN) carrier polymer was used, with the amount of PAN varying from 33% to 66% of the total polymer mixture. 62 These mats exhibited exceptional mercury binding capacities (qm = 634-835 mg Hg / g sulfur polymer, depending on the composition) and the fibrous membranes could be used for removal of mercury from water via filtration.…”

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

“…[62][63] These sulfur polymers were soluble in DMF and could be processed by electrospinning into micro-and nanofibrous mats when a polyacrylonitrile (PAN) carrier polymer was used, with the amount of PAN varying from 33% to 66% of the total polymer mixture. 62 These mats exhibited exceptional mercury binding capacities (qm = 634-835 mg Hg / g sulfur polymer, depending on the composition) and the fibrous membranes could be used for removal of mercury from water via filtration. 62 This study was also important in that it highlighted the importance of hydrophilicity of the sorbent for removing mercury from water and the additional mercury binding imparted from the organic crosslinker.…”

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

“…62 These mats exhibited exceptional mercury binding capacities (qm = 634-835 mg Hg / g sulfur polymer, depending on the composition) and the fibrous membranes could be used for removal of mercury from water via filtration. 62 This study was also important in that it highlighted the importance of hydrophilicity of the sorbent for removing mercury from water and the additional mercury binding imparted from the organic crosslinker. 62 Other insights included the regeneration of the sorbent with 6 M HCl, which allowed recyclability.…”

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

“…62 This study was also important in that it highlighted the importance of hydrophilicity of the sorbent for removing mercury from water and the additional mercury binding imparted from the organic crosslinker. 62 Other insights included the regeneration of the sorbent with 6 M HCl, which allowed recyclability.…”

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

“…In their copolymerizations of sulfur and hydrophilic monomers such as methacrylic acid and 2-carboxyethyl Template for Organic Materials © Thieme Stuttgart • New York 2021-05-06 page 6 of 10 acrylated, significant hydrophilicity was imparted to the sorbent (Figure 8). [62][63] The carboxylate functionality and polysulfide groups were both proposed to bind to mercury as well. These polymers could be integrated into nanofibers by electrospinning, as discussed previously.…”

Section: Crosslinker Considerationsmentioning

confidence: 99%

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Polymers Made by Inverse Vulcanization for Use as Mercury Sorbents

et al. 2021

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Inverse vulcanization is a process in which highly abundant and low-cost elemental sulfur is copolymerized with an unsaturated organic molecule such as a polyene. This process has provided a variety of useful materials with high sulfur content—typically 50% or greater in sulfur by mass. These materials have garnered increasing interest in as sorbents for mercury, due to the high affinity of sulfur for mercury. In this review, the features of mercury sorbents made by inverse vulcanization are presented. Additionally, case studies are provided to illustrate the variety of polymer architectures accessible with this chemistry, the versatility of these materials in mercury remediation, and prospects for industrial use.

show abstract

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

Section: Increasing Surface Area To Improve Mercury Uptakementioning

confidence: 99%

Section: Crosslinker Considerationsmentioning

confidence: 99%

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Polymers Made by Inverse Vulcanization for Use as Mercury Sorbents

et al. 2021

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State‐of‐the‐Art and Future Electrospun Technology

Rastogi

Kandasubramanian

2020

Electrospun Materials and Their Allied Applications

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Highly Efficient, Recyclable Microplastic Adsorption Enabled by Chitin Hydrogen Bond Network Rearrangement

Wu,

Ye,

Liu

et al. 2024

Adv Funct Materials

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A sustainable strategy based on chitin from waste seafood is proposed to remove nano‐size microplastics in water. A chitin nanofibrous foam is constructed by a new hydrogen bond rearrangement scheme without any crosslinking, which delivers an impressive high adsorption capacity of 411.14 ± 1.50 mg g−1 for small‐sized (< 1 µm) microplastics. This excellent adsorption capacity stems from the rough fibrous surface structure of the highly porous foam, the positively charged nature of the partially deacetylated chitin and other molecular interactions introduced by the activation and increased exposure of ‐OH, ‐NH2 and ‐NHCO‐ groups. Molecular dynamics simulation further demonstrates that C‐H‐π, O‐H‐π, and C = O‐π interactions between the microplastics and chitin foam facilitates the efficient removal of microplastics. A high removal efficiency is maintained even in salty water, a property that exemplifies good adaptability to various water bodies. Finally, two proof‐of‐principle scenarios are presented for converting the recovered microplastics into value‐added products. Thus, the entire cycling strategy represents a powerful remedy for the urgent yet challenging ocean microplastic pollution problem.

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Water-insoluble hydrophilic polysulfides as microfibrous composites towards highly effective and practical Hg2+ capture

Cited by 34 publications

References 50 publications

Polymers Made by Inverse Vulcanization for Use as Mercury Sorbents

Polymers Made by Inverse Vulcanization for Use as Mercury Sorbents

State‐of‐the‐Art and Future Electrospun Technology

Highly Efficient, Recyclable Microplastic Adsorption Enabled by Chitin Hydrogen Bond Network Rearrangement

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