Porous polydivinylbenzene (PDVB) as an efficient adsorbent for hydrocarbons: Effect of porogens on adsorption capacity

Churipard, Sathyapal R.; Kanakikodi, Kempanna S.; Rambhia, Dheer A.; Raju, Ch. Siva Kesava; Halgeri, A. B.; Choudary, Nettem V.; Ganesh, Gandham Sri; Ravishankar, Raman; Maradur, Sanjeev P.

doi:10.1016/j.cej.2019.122481

Cited by 42 publications

(16 citation statements)

References 78 publications

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“…PDVB is a new type of porous organic material with many excellent properties. It not only has the advantages of rich pores and specific surface area but also has the superhydrophobicity and superoleophilicity. , As shown in Figure S10a,b, PDVB fabric had extremely opposite wettability to oil and water, and its contact angle to toluene was 0°. Interestingly, when PDVB@fabric was irradiated with UV light (λ = 365 nm) for 1 h, a significant difference in wettability was observed.…”

Section: Results and Discussionmentioning

confidence: 99%

Biomimetic Fabrication of Janus Fabric with Asymmetric Wettability for Water Purification and Hydrophobic/Hydrophilic Patterned Surfaces for Fog Harvesting

Zhu

Liu

Hou

et al. 2020

ACS Appl. Mater. Interfaces

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The long-term shortage of freshwater resources has drawn increasing research attention for water purification and collection. This work reports a facile method to prepare Janus fabrics with asymmetric wettability for on-demand oil/water separation and hydrophobic/hydrophilic patterned fabrics for efficient fog harvesting. Here, the superhydrophobic fabric was prepared by in situ polymerization of polydivinylbenzene (PDVB) on cotton fabric. By regulating the polymerization time, the PDVB polymer content was changed, thereby achieving the regulation of the surface structure and wettability of the prepared fabric. Meanwhile, the superhydrophobic fabric exhibited excellent selfcleaning and antifouling performance, mechanical abrasion and chemical resistance, and environmental durability. Moreover, the photocatalytic degradation properties of PDVB were utilized to prepare the Janus fabric with asymmetric wettability. Water droplets could spontaneously penetrate from the hydrophobic side to the hydrophilic side, while not vice versa, achieving unidirectional transport of water. In addition, the prepared Janus fabric could be used for on-demand oil/water separation, including the heavy oil/water mixture and light oil/water mixture. The separation efficiency and collected oil purity of each mixture were higher than 99.00 and 99.94%, respectively. Furthermore, the hydrophobic/ hydrophilic patterned fabrics were prepared by using the lithographic masks with different apertures under UV light irradiation. Based on the fog-capturing ability of the hydrophilic areas and the water transport performance of the hydrophobic regions, efficient fog harvesting was achieved. For the patterned fabric with larger hydrophobic/hydrophilic areas, the water collection rate reached 224.7 mg cm −2 h −1 . Therefore, this simple strategy to achieve controllable gradient wettability by adjusting the surface structure and chemical composition of the fabric shows great potential in the filtration of purification of oily sewage and the efficient condensed collection of water.

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Section: Results and Discussionmentioning

confidence: 99%

Biomimetic Fabrication of Janus Fabric with Asymmetric Wettability for Water Purification and Hydrophobic/Hydrophilic Patterned Surfaces for Fog Harvesting

Zhu

Liu

Hou

et al. 2020

ACS Appl. Mater. Interfaces

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“…Besides, polymer processed into the powdered oil adsorption material directly was reported in the literature. Churipard et al 37 fabricated a series of porous polydivinylbenzene (PDVB) adsorbents via free radical polymerization of divinylbenzene assisted with different porogenic solvents. The obtained PDVB material showed superhydrophobicity, high surface area, and an obvious advantage in oil adsorption capacity of 16 g/g compared with other reported particle adsorbents.…”

Section: Basic Theory Of Surface Wettabilitymentioning

confidence: 99%

A Review on Oil/Water Mixture Separation Material

Zhang

et al. 2020

Ind. Eng. Chem. Res.

147

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Frequent oil spill accidents and leakage of organic solvent destroy aquatic ecosystems and threaten marine lives. Separation of the oily pollutant from water with material has long been treated as an effective and environmentally friendly solution. As a result, great efforts have been made to construct a material with high oil adsorption capacity, high oil−water separation efficiency, high oil−water selectivity, and superior recyclability. Surface chemical composition and surface topography are two key factors that determine the surface wettability and oil−water separation efficiency of a material. In this review, we summarize the popular oil−water separation materials during the past five years, including adsorption material, filtration material, and smart controllable special wettable separation material. Before that, a basic theory of surface specific wettability is introduced. The perspectives and challenges of each material are also highlighted.

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“…Porogens, which can dissolve in the organic phase and inorganic phase at the same time, play important roles in the formation of pores during phase inversion. , Glycerol and some soluble polymers (PEG and polyethyleneimine) were used as porogens to fabricate the composites at a concentration of 0.5%, and it was found that polyhydroxyl porogens showed superior results in the formation of pores with higher porosity and lower dry weight of composites than that of polyamine ones (Figure A-1). Meanwhile, their L/FP composite beads also performed better in lipase immobilization (Figure A-2).…”

Section: Resultsmentioning

confidence: 99%

SiO₂-Coated Fe₃O₄ Nanoparticle/Polyacrylonitrile Beads for One-Step Lipase Immobilization

Zhu

et al. 2021

ACS Appl. Nano Mater.

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Nanoscale particle-based enzyme immobilization carries a risk of dissolving or breaking the material when applied. One effective strategy to improve the stability and functionality of this type of nanomaterial is compounding with polymers. In this study, Fe3O4 nanoparticles were synthesized and coated with SiO2, after which magnetic hollow composite beads with nanoscale porous structures, named, lipase/Fe3O4/PAN (L/FP), were fabricated by compounding polyacrylonitrile and SiO2-coated Fe3O4 nanoparticles to immobilize Candida antarctica lipase B (CALB) in one step. Fourier transform infrared spectroscopy, scanning electron microscopy, the Brunauer–Emmett–Teller method, vibrating sample magnetometer measurements, and thermogravimetry analysis were used to analyze the structure of hollow beads. It was found that composite beads retained nanoscale channels and had a larger specific surface area (27.2 m2/g), a higher pore volume (0.09 cm3/g), and better saturation magnetization values (9.8 emu/g) than PAN hollow beads (6.2 m2/g, 0.03 cm3/g, and 0 emu/g, respectively). After optimizing fabrication and immobilization conditions, L/FP showed a high lipase capacity (50 mg protein/g support) at 2 mg/mL lipase, and the immobilized yield was up to 98.4% when the mass ratio of the starting lipase and support was 1.3 (mg lipase/g support). The immobilized lipase in L/FP showed greater thermal stability and resistance to alkali than free CALB. L/FP also had good stability in most organic solvents. In all tested cycles, it also had better reusability (78.4, 47.2, and 23.8% retained activity after 10, 20, and 30 cycles, respectively) in ester hydrolysis than CALB-immobilized Fe3O4 nanoparticles or PAN beads and had higher activity than the commercial immobilized lipase (Novo 435).

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Porous polydivinylbenzene (PDVB) as an efficient adsorbent for hydrocarbons: Effect of porogens on adsorption capacity

Cited by 42 publications

References 78 publications

Biomimetic Fabrication of Janus Fabric with Asymmetric Wettability for Water Purification and Hydrophobic/Hydrophilic Patterned Surfaces for Fog Harvesting

Biomimetic Fabrication of Janus Fabric with Asymmetric Wettability for Water Purification and Hydrophobic/Hydrophilic Patterned Surfaces for Fog Harvesting

A Review on Oil/Water Mixture Separation Material

SiO₂-Coated Fe₃O₄ Nanoparticle/Polyacrylonitrile Beads for One-Step Lipase Immobilization

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Porous polydivinylbenzene (PDVB) as an efficient adsorbent for hydrocarbons: Effect of porogens on adsorption capacity

Cited by 42 publications

References 78 publications

Biomimetic Fabrication of Janus Fabric with Asymmetric Wettability for Water Purification and Hydrophobic/Hydrophilic Patterned Surfaces for Fog Harvesting

Biomimetic Fabrication of Janus Fabric with Asymmetric Wettability for Water Purification and Hydrophobic/Hydrophilic Patterned Surfaces for Fog Harvesting

A Review on Oil/Water Mixture Separation Material

SiO2-Coated Fe3O4 Nanoparticle/Polyacrylonitrile Beads for One-Step Lipase Immobilization

Contact Info

Product

Resources

About

SiO₂-Coated Fe₃O₄ Nanoparticle/Polyacrylonitrile Beads for One-Step Lipase Immobilization