“Several birds with one stone” strategy of pH/thermoresponsive flame-retardant/photothermal bactericidal oil-absorbing material for recovering complex spilled oil

Chen, Ya; Lin, Jing; Mersal, Gaber A.M.; Zuo, Jianliang; Li, Jialin; Wang, Qiying; Ye, Feng; Liu, Jianwei; Liu, Zili; Wang, Bin; Xu, Ben Bin; Guo, Zhanhu

doi:10.1016/j.jmst.2022.05.002

Cited by 60 publications

(12 citation statements)

References 96 publications

(75 reference statements)

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“…Bacterial antiadhesion capabilities of samples were evaluated using a slight modi cation of the methodology reported by Lin et al [46][47][48][49][50][51][52]. The PVA and Janus membranes were cut into 1 cm diameter discs.…”

Section: Bacterial Antiadhesion Test and Live/dead Bacteria Uorescenc...mentioning

confidence: 99%

Hemostatic, antiextravasation, and prehealing drug droplet directional transportation of antibacterial Janus wound plaster based on the structural and wettability gradients

Lin

Hua

Yao

et al. 2022

Preprint

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Uncontrolled bleeding and bacterial infections are major causes of wounds that do not heal. However, developing a wound plaster that can stop bleeding, resist blood extravasation, and realize directional transportation of drugs to promote wound healing remains a significant challenge. This study developed a superhydrophilic/hydrophobic PVA/CS/Ag@TPU Janus membrane with structural and wettability gradients. Water is absorbed from blood via the superhydrophilic layer attached to the wound and charge interactions between introduced chitosan (CS) and platelets promote blood clotting. The capillary pressure resistance (∆p > 0) from the superhydrophilic layer to the hydrophobic layer can prevent blood from permeating, reducing blood loss. A favorable ∆p ( < 0 ) based on structural and wettability gradients can realize the directional transportation of drugs that promote wound healing from the hydrophobic to superhydrophilic layer. The incorporation of CS and Ag endows Janus wound plaster with intrinsic antibacterial activity (99.9%). The bacterial antiadhesion capability of wound plaster can be achieved due to the resisting effect of the hydrated layer that formed on the hydrophilic layer, its low adhesion, and antibacterial capability. Experiments on mice with full-thickness skin defects showed that the wound-healing rate using the Janus membrane after dosing with a drug increased from 87.65% (without the drug) to approximately 100%. Moreover, it could accelerate wound healing, regenerate epidermal and granulation tissue, promote collagen formation, and reduce the scar area. This gradient-design strategy opens an avenue for next-generation wound dressings.

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Section: Bacterial Antiadhesion Test and Live/dead Bacteria Uorescenc...mentioning

confidence: 99%

Hemostatic, antiextravasation, and prehealing drug droplet directional transportation of antibacterial Janus wound plaster based on the structural and wettability gradients

Lin

Hua

Yao

et al. 2022

Preprint

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“…12 Stationary wettabilityregulated materials usually require ex situ multistep treatments or devices for achieving highly efficient separation. Stimulusresponsive separation membranes can effectively prevent oil contamination and achieve continuous on-demand oil/water separation by changing the membrane surface wettability under external stimuli (e.g., pH, 13,14 light, 15−17 temperature, 18−20 electricity, 21,22 magnetism, 23−25 and pressure 26,27 ). Stimulus-responsive hydrogels also exhibit superiority toward complex wastewater (such as multiphase heavy oil/water/light oil mixtures).…”

Section: Introductionmentioning

confidence: 99%

Separation and Photodegradation of Dye-Containing Oil/Water Mixtures with a Photothermally Responsive PNIPAm-MXene/PAN-PNIPAm Nanofibrous Hydrogel Membrane

Huang,

Wen,

Huang

et al. 2024

ACS Appl. Nano Mater.

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Although several separation membranes for the purification of dye-containing oily wastewater have been reported, achieving continuous onestep separation and photodegradation of complex oil/water effluents containing dyes is still a significant challenge. In previous studies, the purification of oil/ water mixtures has typically involved a two-step process involving the initial separation of oil/water mixtures followed by the subsequent photodegradation of organic dyes. This is because one-step purification requires the membrane to concurrently possess an excellent separation efficiency and photodegradation ability to ensure efficient degradation of dyes as they rapidly pass through the separation membrane. Herein, we propose a photothermally responsive poly(Nisopropylacrylamide)-MXene/polyacrylonitrile-poly(N-isopropylacrylamide) nanofibrous hydrogel membrane (PNIPAm-MXene/PAN-PNIPAm, PMPP membrane). The PMPP membrane is composed of a PNIPAm-MXene hydrogel bonded to the surface of a PAN-PNIPAm nanofibrous membrane. The PNIPAm-MXene hydrogel layer imparts excellent photothermally responsive wettability, photodegradation activity, and antifouling properties to the membrane. The PAN-PNIPAm nanofibrous membrane provides a porous structure that ensures the highly efficient separation of complex oil/water mixtures. The PMPP membrane achieves simultaneous one-step separation and photodegradation of complex oil/water effluents under light irradiation, particularly in the case of multiphase heavy oil/water/light oil mixtures containing both oily and water-soluble organic dyes and oil−water emulsions. The degradation and separation efficiencies of the PMPP membrane exceed 99.5%. Even after 20 cycles, the degradation rates of Sudan IV and methyl blue (MB) remain above 95.7 and 99.9%, respectively.

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“…Smart-responsive Janus materials have been extensively focused on because of their advantages, such as controllable separation process and remote operation. Besides, intelligent responsive Janus materials have broad application prospects in biomedicine, 32,33 sensors, 34,35 oil–water separation 36–38 and other fields. In 2014, Cao et al 39 prepared a temperature and pH dual-responsive poly( N , N -dimethylaminoethyl methacrylate) (PDMAEMA) hydrogel-coated mesh for controlled oil–water separation in an oil/water/solid three-phase system.…”

Section: Introductionmentioning

confidence: 99%

Janus smart materials with asymmetrical wettability for on-demand oil/water separation: a comprehensive review

Gong,

Xiang,

Sun

et al. 2023

J. Mater. Chem. A

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“Several birds with one stone” strategy of pH/thermoresponsive flame-retardant/photothermal bactericidal oil-absorbing material for recovering complex spilled oil

Cited by 60 publications

References 96 publications

Hemostatic, antiextravasation, and prehealing drug droplet directional transportation of antibacterial Janus wound plaster based on the structural and wettability gradients

Hemostatic, antiextravasation, and prehealing drug droplet directional transportation of antibacterial Janus wound plaster based on the structural and wettability gradients

Separation and Photodegradation of Dye-Containing Oil/Water Mixtures with a Photothermally Responsive PNIPAm-MXene/PAN-PNIPAm Nanofibrous Hydrogel Membrane

Janus smart materials with asymmetrical wettability for on-demand oil/water separation: a comprehensive review

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