Dendritic amphiphile mediated porous monolith for eliminating organic micropollutants from water

Ye, Yonglian; Wan, Decheng; Du, Jiang; Jin, Ming; Pu, Hongting

doi:10.1039/c4ta07097f

Cited by 29 publications

(36 citation statements)

References 35 publications

(35 reference statements)

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“…6) can also be calculated from Figure (b) (the detailed calculation method is depicted in Section 7 of the Supporting Information), with a value of 0.584 mg g −1 , which is much higher than that of many other adsorption materials. For example, the saturated adsorbing capacity of a dendritic amphiphile‐mediated porous monolith of pyrene was shown to be 0.2 mg g −1 , which is much lower than the value in the current work.…”

Section: Resultscontrasting

confidence: 78%

A continuous method to prepare porous polystyrene membranes with high adsorption ability for polycyclic aromatic hydrocarbons

Cheng

et al. 2017

J of Applied Polymer Sci

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A convenient and continuous method to prepare porous polystyrene (PS) membranes via a microlayer coextrusion and template method is proposed. The porous PS membranes can be obtained via the acid etching of a CaCO3 template embedded in the membranes. Scanning electron microscopy, thermogravimetric analysis, and Fourier transform infrared spectroscopy of the porous PS membranes show that most of the CaCO3 particles can be etched away. The effects of etching time, CaCO3 content, and membrane thickness on the porous structures are investigated, which can be used to regulate and control the porous structure. To demonstrate the adsorption performance of porous PS membranes on polycyclic aromatic hydrocarbons, pyrene is used as the model compound. Compared with that of solid PS membranes, porous PS membranes exhibit much higher adsorption performance for trace pyrene. The adsorption kinetics and isotherm of porous PS membranes can be well fit by pseudo‐second‐order kinetics and a Freundlich isotherm model. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45917.

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Section: Resultscontrasting

confidence: 78%

A continuous method to prepare porous polystyrene membranes with high adsorption ability for polycyclic aromatic hydrocarbons

Cheng

et al. 2017

J of Applied Polymer Sci

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“…[4][5][6][7] They have low solubility in water but are delivered through the food chain and finally harm human health. 10,11 For example, activated carbon is a low cost adsorbent for PAHs, but it doesn't work well because of its rigid structure and weak affinity for PAHs ( ppm level of residual PAHs in water). 10,11 For example, activated carbon is a low cost adsorbent for PAHs, but it doesn't work well because of its rigid structure and weak affinity for PAHs ( ppm level of residual PAHs in water).…”

Section: Introductionmentioning

confidence: 99%

A multifunctional statistical copolymer vesicle for water remediation

Xiao

2016

Polym. Chem.

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Multifunctional statistical copolymers can be simply synthesized in one step without tedious and timeconsuming procedures. In addition, the fuzzy boundary between different functional groups in the statistical copolymers can facilitate the fabrication of new functional nanomaterials. Herein, we designed a novel multifunctional vesicle based on a statistical copolymer, poly[[2-hydroxy-3-(naphthalen-1-ylamino) propyl methacrylate]-stat-[2-(diethylamino)ethyl methacrylate]] [P(HNA 21 -stat-DEA 35 )] which can be synthesized by reversible addition-fragmentation transfer (RAFT) polymerization in one step. The HNA moiety is designed for capturing polycyclic aromatic hydrocarbons (PAHs) by π-π stacking, while the DEA moiety is engineered to immobilize gold nanoparticles for facilitating the reduction of 4-nitrophenol (4-NP) in aqueous solution. This vesicle showed excellent ability in water remediation by absorbing PAHs and accelerating the reduction of 4-nitrophenol (4-NP). Overall, this multifunctional statistical copolymer vesicle provides a new insight for designing multifunctional water remediation materials. † Electronic supplementary information (ESI) available: Synthesis, and characterization. See

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“…AIBN (SCRC) was recrystallized from ethanol and stored in a refrigerator prior to use. The macrosurfactant of PEI@PS (PEI 232 @PS (7300) 70 , M n = 520 kDa, which means a PEI (232 repeat units on the average, M n = 10 kDa) was alkylated with 70 chains of glycidyl‐capped polystyrene (PS) M n = 7.3 kDa) was synthesized in accordance with a previous report …”

Section: Methodsmentioning

confidence: 99%

Evolution of a Radical‐Triggered Polymerizing High Internal Phase Emulsion into an Open‐Cellular Monolith

Jin

Wan

2019

Macro Chemistry & Physics

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The time and manner by which initially discrete cells in a high internal phase emulsion (HIPE) become highly interconnected by windows during/after polymerization (polyHIPE) remain a controversy. Water‐in‐oil HIPE with styrene/divinylbenzene as the oil phase is one of the most widely studied systems. Here, new evidence is presented on the evolution of polyHIPE with the aid of a macrosurfactant and new instruments. The macrosurfactant has a branched polyethylenimine as the hydrophilic head and polystyrene chains as the hydrophobic tail. It can stabilize HIPE within a wide range of dosages and lead to different polyHIPE morphologies, all of which are proven to be of open‐cellular monolith. At a low macrosurfactant dosage, the windows that interconnect the cells are sparse but large and can be effectively detected with a 3D optical microscope (3DOM) and a 2D photothermal infrared (2D PTIR) spectrometer in an open environment. 3DOM detection supports the claim that windows form during HIPE polymerization. Tests involving the extraction of pre‐colored water droplets of the polymerizing HIPE also lend support to the formation of an open‐cellular structure during polymerization. 2D PTIR provides evidence on phase separation on the surface once covered by the macrosurfactant, which favors window development.

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Dendritic amphiphile mediated porous monolith for eliminating organic micropollutants from water

Abstract: Few adsorbents with a macroscopic size can combine well with a 3D microscopically well-tailored surface.

Cited by 29 publications

References 35 publications

A continuous method to prepare porous polystyrene membranes with high adsorption ability for polycyclic aromatic hydrocarbons

A continuous method to prepare porous polystyrene membranes with high adsorption ability for polycyclic aromatic hydrocarbons

A multifunctional statistical copolymer vesicle for water remediation

Evolution of a Radical‐Triggered Polymerizing High Internal Phase Emulsion into an Open‐Cellular Monolith

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