Bioinspired Unidirectional Silk Fibroin–Silver Compound Nanowire Composite Scaffold via Interface‐Mediated In Situ Synthesis

Xue, Jingzhe; Gao, Huai‐Ling; Wang, Xiang‐Ying; Yang, Yuan; He, Tao; He, Chuanxin; Lu, Yang; Yu, Shu‐Hong

doi:10.1002/ange.201907708

Cited by 8 publications

(8 citation statements)

References 36 publications

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“…As illustrated in Fig. 4i, the evaporation rate of the PDA-1@CA membranes was higher than that of many different types of evaporators previously reported, [48][49][50] including MXene-based, [51][52][53][54] Ag-based, [55][56][57] PPybased evaporators. 20,58 Although some other devices exhibited high evaporation rates, their fabrication processes were usually complicated, or they exhibited an inability to suppress the colonization of bacteria for durable applications in microorganismcontaminated water.…”

Section: Resultsmentioning

confidence: 72%

A bioinspired antibacterial and photothermal membrane for stable and durable clean water remediation

Yang

et al. 2023

Mater. Horiz.

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Section: Resultsmentioning

confidence: 72%

A bioinspired antibacterial and photothermal membrane for stable and durable clean water remediation

Yang

et al. 2023

Mater. Horiz.

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“…As mentioned above, most of the aerogel membranes reported are mainly focused on oil–water separation and dye removal studies. − ,− This is the first report wherein various pollutants such as dyes, pharmaceuticals, hormones, surfactant, arsenate, and fluoride have been successfully removed from aqueous solution using the BNC-AG membrane with remarkably high flux and rejection efficiencies. Besides aerogel-based system, a comparative study was undertaken considering other adsorbents, adsorptive membranes, and pressured-based membrane processes to highlight the advantages/usefulness of the BNC-AG-0.1 membrane.…”

Section: Resultsmentioning

confidence: 99%

“…Alternatively, aerogels possessing improved affinity toward diverse pollutants were exhibited as new-generation adsorbents for the purification of water . An aerogel is usually obtained through freeze-drying of hydrogel, and in the process of freeze-drying, a three-dimensional (3D) hybrid network with porous macrostructures is created after the removal of ice. , Extensive research efforts have been carried out utilizing aerogels in the field of oil–water separation, dye removal, solar-driven evaporation, thermal insulations, and so on. Recently, synthetic polymer-based FIBER aerogel, polyvinylidene difluoride, and polyvinyl alcohol/graphene hybrid aerogel were employed for oil–water separation with high water flux in a dynamic flow method.…”

Section: Introductionmentioning

confidence: 99%

Engineering a Biopolymer-Based Ultrafast Permeable Aerogel Membrane Decorated with Task-Specific Fe–Al Nanocomposites for Robust Water Purification

Mruthunjayappa

Sharma

Kalpana

et al. 2020

ACS Appl. Bio Mater.

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The present work demonstrates an innovative strategy for robust water purification using an engineered aerogel membrane fabricated from biopolymers and task-specific Fe−Al-based nanocomposites. The as-prepared ethylenediaminetetraacetate dianhydride cross-linked chitosan-and agarose (7:3 weight ratio)-based aerogel membrane decorated with α-FeOOHand γ-AlOOH-based nanocomposites was characterized using various analytical tools, which suggested formation of a highly stable network interconnected through covalent and electrostatic interactions. The optimized bionanocompositebased aerogel (BNC-AG-0.1) membrane showed macroporous and partial unidirectional short-range channels with an ultralow density of 0.021 g•m −2 , a high swelling ratio of 1974%, and a remarkable pure water flux of 19,228 L•m −2 •h −1 (>6-fold higher flux compared to the reported aerogel membranes). The aerogel membranes were successfully utilized for purification of diverse pollutants such as dyes, emerging pollutants (EPs), arsenate, and fluoride in a continuous flow method under gravitational force. The BNC-AG-0.1 membrane exhibits high rejection (95−98.6%) for both cationic and anionic dyes with a flux rate of 1150−1375 L•m −2 •h −1 and a rejection of 89−92% for EPs with a flux rate of 1098−1165 L•m −2 •h −1 . Moreover, the BNC-AG-0.1 membrane showed a q max of 102.45 mg•g −1 (at pH 6.5) for As(V) with >93% rejection at a flow rate of 1000 L•m −2 •h −1 . Furthermore, the aerogel membrane showed an excellent removal efficiency (92%) of arsenic up to the 10th cycle and hence demonstrated as a potential adsorption-based membrane for arsenic-free potable water. On the other hand, the BNC-AG-0.1 membrane showed a q max of 81.56 mg•g −1 (at pH 6.5) for F − removal with >99% rejection at a flow rate of 250 L•m −2 •h −1 . When applied for real-water purification, approximately 4734 L of safe drinking water (the F − concentration is less than the WHO permissible limit) per square meter of the aerogel membrane can be obtained with a flux rate of 250 L•m −2 •h −1 . Overall, the prepared aerogel membrane showed robust removal of a variety of contaminants with ultrafast water permeation and established excellent recyclability.

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“…Given these demands, vertically aligned architectures of pores are not only beneficial for the enhancement of mechanical properties, but they also pave the way for efficient transportation of drug delivery and exchange nutrients for the rapid proliferation of cells. [183] Bai and co-workers prepared a type of hydroxyapatite (HA)-based scaffold with graded channels along with perpendicular direction via unidirectional freezing casting strategy; this resulted in rapider cell migration behavior for complete bone regeneration compared with scaffolds with conventional tortuous or parallels. [183d] Based on an effective vertically aligned design, a bio-scaffold behaving a good balance between mechanical properties and rich flow channels for transportation enables successful cell regeneration on a large-scale.…”

Section: Other Functional Applicationsmentioning

confidence: 99%

Controlled Vertically Aligned Structures in Polymer Composites: Natural Inspiration, Structural Processing, and Functional Application

Lei

Xie

et al. 2021

Advanced Materials

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density, diverse processability, excellent flexibility, and high chemical resistance, have been attracting increasing research attention for practical applications. [5] Further, the combination of polymers with various functional fillers, such as graphene, carbon nanotubes (CNTs), [6] boron nitride nanosheets (BNNS), [7] and barium carbonate (BaTiO 3 ) [8] can help in developing bring polymer composites that have additional electrical, magnetic, thermal, or photonic functions that are not limited to the characteristics of the filler and the matrix; [9] this provides them with indispensable potentials in some emerging scenarios and sophisticated applications.The macroscopic performance and function of polymer composites depend on the polymer/filler composition and their morphological microstructure. In previous studies, polymer composites were fabricated via direct physical mixing, which appears as filler agglomeration in the polymeric matrix. [10] In this century, an increasing number of researchers have adopted structural manipulation, which focuses on the regulation of polymer/filler architecture, instead of homogeneous filler dispersion. For example, the number of uniform filler particles with random distribution in the polymer matrix can be controlled in the formation of interconnected filler morphology; [11] the filler can be selectively distributed (confined within one polymer phase or at the polymer-polymer interface) by structural processing procedures; [12] and the filler particles can be induced to be oriented along one specific direction by an intense shear field considering the anisotropy of the filler dimension. [13] These diverse processing strategies provide us with great opportunities to optimize the polymer/filler microstructure, performance and functionality, and to largely broaden their practical applications. Among the various structures in polymeric composites such as randomly distributed structures and horizontal structures, vertically aligned structures in polymer composites, which refers to the architectures with filler orientation, interconnection, or assembly in the thickness direction, have considerable significance and are gaining interest in scientific research and industrial applications, because of their distinctive throughplane functional properties. For instance, the reinforced filler in the polymeric matrix needs to be perpendicular to the Vertically aligned structures, which are a series of characteristic conformations with thickness-direction alignment, interconnection, or assembly of filler in polymeric composite materials that can provide remarkable structural performance and advanced anisotropic functions, have attracted considerable attention in recent years. The past two decades have witnessed extensive development with regard to universal fabrication methods, subtle control of morphological features, improvement of functional properties, and superior applications of vertically aligned structures in various fields. However, a systematic review remains to be attempted. Th...

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Bioinspired Unidirectional Silk Fibroin–Silver Compound Nanowire Composite Scaffold via Interface‐Mediated In Situ Synthesis

Cited by 8 publications

References 36 publications

A bioinspired antibacterial and photothermal membrane for stable and durable clean water remediation

A bioinspired antibacterial and photothermal membrane for stable and durable clean water remediation

Engineering a Biopolymer-Based Ultrafast Permeable Aerogel Membrane Decorated with Task-Specific Fe–Al Nanocomposites for Robust Water Purification

Controlled Vertically Aligned Structures in Polymer Composites: Natural Inspiration, Structural Processing, and Functional Application

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