Ultrafine Silk-Derived Nanofibrous Membranes Exhibiting Effective Lysozyme Adsorption

Yi, Shixiong; Dai, Fangyin; Ma, Yue; Yan, Tingsheng; Si, Yang; Sun, Gang

doi:10.1021/acssuschemeng.7b01580

Cited by 36 publications

(32 citation statements)

References 43 publications

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“…Nowadays, the attractive properties of SF protein-such as good mechanism stability [42], superior biocompatibility [43], and excellent optic performances [44]-have made SF effective use in bioelectronic substrate [45], optical sensor [46], drug delivery [47,48], and so on. Consequently, SF protein has been regarded as an excellent candidate of organic biomolecules for HNF fabrication [49].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Xiong

Duan

et al. 2020

Materials

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For further the understanding of the adsorption mechanism of heavy metal ions on the surface of protein-inorganic hybrid nanoflowers, a novel protein-derived hybrid nanoflower was prepared to investigate the adsorption behavior and reveal the function of organic and inorganic parts on the surface of nanoflowers in the adsorption process in this study. Silk fibroin (SF)-derived and copper-based protein-inorganic hybrid nanoflowers of SF@Cu-NFs were prepared through self-assembly. The product was characterized and applied to adsorption of heavy metal ion of Pb(II). With Chinese peony flower-like morphology, the prepared SF@Cu-NFs showed ordered three-dimensional structure and exhibited excellent efficiency for Pb(II) removal. On one hand, the adsorption performance of SF@Cu-HNFs for Pb(II) removal was evaluated through systematical thermodynamic and adsorption kinetics investigation. The good fittings of Langmuir and pseudo-second-order models indicated the monolayer adsorption and high capacity of about 2000 mg g−1 of Pb(II) on SF@Cu-NFs. Meanwhile, the negative values of Δ r G m ( T ) θ and Δ r H m θ proved the spontaneous and exothermic process of Pb(II) adsorption. On the other hand, the adsorption mechanism of SF@Cu-HNFs for Pb(II) removal was revealed with respect to its individual organic and inorganic component. Organic SF protein was designated as responsible ‘stamen’ adsorption site for fast adsorption of Pb(II), which was originated from multiple coordinative interaction by numerous amide groups; inorganic Cu3(PO4)2 crystal was designated as responsible ‘petal’ adsorption site for slow adsorption of Pb(II), which was restricted from weak coordinative interaction by strong ion bond of Cu(II). With only about 10% weight content, SF protein was proven to play a key factor for SF@Cu-HNFs formation and have a significant effect on Pb(II) treatment. By fabricating SF@Cu-HNFs hybrid nanoflowers derived from SF protein, this work not only successfully provides insights on its adsorption performance and interaction mechanism for Pb(II) removal, but also provides a new idea for the preparation of adsorption materials for heavy metal ions in environmental sewage in the future.

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Section: Introductionmentioning

confidence: 99%

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Xiong

Duan

et al. 2020

Materials

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“…Alternatively, 2D membrane materials are considered as ideal adsorbents with wider adsorption applicability owing to the large surface area, controllable microstructure, and convenient one‐step processing . Among these 2D membrane materials, fascinating electrospun nanofibrous membranes (NFM), possessing large surface areas, high tortuous porous structures, and robust mechanical strength have been successfully applied to adsorb and elute target molecules to obtain highly purified proteins …”

Section: Introductionmentioning

confidence: 99%

Seaweed‐Derived Electrospun Nanofibrous Membranes for Ultrahigh Protein Adsorption

Dou

Qian

et al. 2019

Adv Funct Materials

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Construction of simple and efficient protein adsorption materials is extremely vital to satisfy the requirements of highly purified proteins in biopharmaceutical and biotechnological industries, yet remains challenging. Herein, a cost‐effective strategy to develop seaweed‐derived nanofibrous membranes (NFM) for ultrahigh protein adsorption is reported. Synergistic regulation by cosolvent of ethanol, nonionic surfactants of Triton X‐100, and polyethylene oxide (PEO5000k) is employed to realize electrospinning of seaweed‐derived sodium alginate (SA) nanofibers with higher alginate content of 98 wt% to date, and following water washing easily generates SA nanofibrous membranes (SA‐NFM) with excellent morphology. Benefiting from the nanoscale merit of large specific surface area and tortuously porous microstructure, SA‐NFM exhibit a high actual capacity of 1235 mg g−1 toward lysozyme, which far exceeds maximum value for the reported 2D membrane materials (710 mg g−1) and is about 20 times that of commercial membranes adsorbents (51 mg g−1). Higher dynamic capacity of 805 mg g−1 (gravity driven) is also realized to meet the demand of practical application. The SA‐NFM also possess outstanding reversibility and unique selectivity toward specific proteins. Herein, SA‐NFM represent a perfect candidate for next‐generation protein absorbents for fast and efficient bioseparation.

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“…Yi et al. reported a scalable method to prepare carboxyl group functionalized nanofibrous membranes which had a capacity of 710 mg g −1 for the adsorption of lysozyme . Apart from adsorption capacity, the adsorption kinetics is also critical for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Bovine Hemoglobin by Sulfonated Polystyrene Nanospheres

Shen

Chen

et al. 2019

ChemistrySelect

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In this work, the authors attempted to present a detailed study on the adsorption of bovine hemoglobin (BHB) by sulfonated polystyrene nanospheres (SPS NSs). The adsorption characteristics including adsorption isotherms, kinetics and thermodynamics were studied in detail. The adsorption isotherms were better fitted by the Langmuir model, leading to a remarkable adsorption capacity of 2831.4 mg g À 1 . Such an adsorption capacity is among the highest values reported in the literature. The adsorption kinetics was analyzed by the pseudo-first-order, pseudo-second-order and intra-particle diffusion equations.The thermodynamic parameters including binding site, binding affinity, and changes of enthalpy, entropy and Gibbs free energy were determined by isothermal titration calorimetry measurements. The electrostatic interaction of BHB and SPS NSs was identified as the major adsorption mechanism. The effects of solution pH, temperature and competitive metal ions in the adsorption process were studied. Based on the Arrhenius equation, the activation energy of the adsorption process was determined to be 2.34 kJ mol À 1 .

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Ultrafine Silk-Derived Nanofibrous Membranes Exhibiting Effective Lysozyme Adsorption

Cited by 36 publications

References 43 publications

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Seaweed‐Derived Electrospun Nanofibrous Membranes for Ultrahigh Protein Adsorption

Adsorption of Bovine Hemoglobin by Sulfonated Polystyrene Nanospheres

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