Superhydrophilic membrane with photo-Fenton self-cleaning property for effective microalgae anti-fouling

Wang, Yunhua; Jiao, Zhengqi; Li, Wenlong; Zhang, Sen; Deng, Jiliang; Wang, Miao; Ren, Lei

doi:10.1016/j.cclet.2022.108020

Cited by 10 publications

(7 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We performed both static and dynamic fouling experiments to evaluate the fouling propensity of the membranes. Two model foulants (i.e., BSA and alginate) were selected to, respectively, mimic protein and extracellular polymeric substances that commonly cause severe fouling on engineered surfaces . In static fouling experiments (details in the Supporting Information), membrane surfaces were in contact with fluorescein-conjugated BSA for 3 h in the dark and then observed under fluorescence microscopy.…”

Section: Resultsmentioning

confidence: 99%

“…Two model foulants (i.e., BSA and alginate) were selected to, respectively, mimic protein and extracellular polymeric substances that commonly cause severe fouling on engineered surfaces. 58 In static fouling experiments (details in the Supporting Information), membrane surfaces were in contact with fluorescein-conjugated BSA for 3 h in the dark and then observed under fluorescence microscopy. The fluorescence intensity is thus directly related to the amount of protein attached to the surface (Figure S6).…”

Section: Dynamic Fouling Experiments In Reverse Osmosis (Ro)mentioning

confidence: 99%

See 1 more Smart Citation

Bioinspired N-Oxide-Based Zwitterionic Polymer Brushes for Robust Fouling-Resistant Surfaces

Feng

2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

Fouling-resistant surfaces are needed for various environmental applications. Inspired by superhydrophilic N-oxide-based osmolytes in saltwater fish, we demonstrate the use of a trimethylamine N-oxide (TMAO) analogue for constructing fouling-resistant surfaces. The readily synthesized N-oxide monomer of methacrylamide is grafted to filtration membrane surfaces by surface-initiated atom transfer radical polymerization (SI-ATRP). Successful grafting of the amine N-oxide brush layer as confirmed by material characterization endows the surface with increased hydrophilicity, reduced charge, and decreased roughness. Notably, the introduction of the N-oxide layer does not compromise transport properties, i.e., water permeability and water-salt selectivity. Moreover, the modified membrane exhibits improved antifouling properties with a lower flux decline (32.1%) and greater fouling reversibility (18.55%) than the control sample (45.4% flux decline and 3.26% fouling reversibility). We further evaluate foulant–membrane interaction using surface plasmon resonance (SPR) to relate the reduced fouling tendency to the synergic effects of surface characteristic changes after amine N-oxide modification. Our results demonstrate the promise and potential of the N-oxide-based polymer brushes for the design of fouling resistance surfaces for a variety of emerging environmental applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Dynamic Fouling Experiments In Reverse Osmosis (Ro)mentioning

confidence: 99%

Bioinspired N-Oxide-Based Zwitterionic Polymer Brushes for Robust Fouling-Resistant Surfaces

Feng

2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…These results demonstrate the successful conversion of the SR catheter's hydrophobicity to superhydrophilicity. 39,45 This transformation is attributed to the abundant presence of amino groups in PL and sulfonic acid groups in Hep. The superhydrophilicity surface reduces bacterial and protein adhesion, increasing the blood contact catheter's antibacterial and anticoagulant capabilities.…”

Section: Surface Characterizationmentioning

confidence: 99%

“…38 Additionally, TA boasts multiple hydroxyl groups that can engage with macromolecules and metal ions, enabling secondary functionalization. 39 Zhang et al 21 have reported a polyphenol-amine coating technique on thermoplastic polyurethane surfaces employing TA and lysine through a straightforward dip-coating method, drawing inspiration from the adhesive qualities of mussels. Furthermore, an amide reaction was employed to introduce Hep, imparting anticoagulant functionality.…”

Section: Introductionmentioning

confidence: 99%

“…In nature, mussels exhibit remarkable adhesion capabilities to various objects submerged in seawater, primarily owing to the catechol group found in the mussel foot silk protein. , This catechol group’s adhesive ability arises from a complex interplay of hydrogen bonding, electrostatic forces, hydrophobic interactions, covalent bonds, and other molecular interactions, enabling mussels to securely attach themselves to a wide array of material surfaces. ,− Wang et al have reported a coating that capitalizes on the surface-independent adhesion properties of tannic acid (TA) and the TA-3-aminopropyltriethoxysilane (APTES) reaction, facilitating hydrophilic modification . Additionally, TA boasts multiple hydroxyl groups that can engage with macromolecules and metal ions, enabling secondary functionalization . Zhang et al have reported a polyphenol-amine coating technique on thermoplastic polyurethane surfaces employing TA and lysine through a straightforward dip-coating method, drawing inspiration from the adhesive qualities of mussels.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Generalized Multifunctional Coating Strategies Based on Polyphenol-Amine-Inspired Chemistry and Layer-by-Layer Deposition for Blood Contact Catheters

Du,

Zhang,

et al. 2024

ACS Biomater. Sci. Eng.

Self Cite

View full text Add to dashboard Cite

Blood-contacting catheters play a pivotal role in contemporary medical treatments, particularly in the management of cardiovascular diseases. However, these catheters exhibit inappropriate wettability and lack antimicrobial characteristics, which often lead to catheter-related infections and thrombosis. Therefore, there is an urgent need for blood contact catheters with antimicrobial and anticoagulant properties. In this study, we employed tannic acid (TA) and 3-aminopropyltriethoxysilane (APTES) to create a stable hydrophilic coating under mild conditions. Heparin (Hep) and poly(lysine) (PL) were then modified on the TA-APTES coating surface using the layer-by-layer (LBL) technique to create a superhydrophilic TA/APTES/ (LBL) 4 coating on silicone rubber (SR) catheters. Leveraging the superhydrophilic nature of this coating, it can be effectively applied to blood-contacting catheters to impart antibacterial, antiprotein adsorption, and anticoagulant properties. Due to Hep's anticoagulant attributes, the activated partial thromboplastin time and thrombin time tests conducted on SR/TA-APTES/(LBL) 4 catheters revealed remarkable extensions of 276 and 103%, respectively, when compared to uncoated commercial SR catheters. Furthermore, the synergistic interaction between PL and TA serves to enhance the resistance of SR/TA-APTES/(LBL) 4 catheters against bacterial adherence, reducing it by up to 99.9% compared to uncoated commercial SR catheters. Remarkably, the SR/TA-APTES/(LBL) 4 catheter exhibits good biocompatibility with human umbilical vein endothelial cells in culture, positioning it as a promising solution to address the current challenges associated with blood-contact catheters.

show abstract

Flexible, transparent, and durable slippery liquid‐infused porous surface achieved by void‐centered PVDF‐co‐HFP membrane for self‐cleaning antifog coating

Tran,

Nguyen,

Bui

et al. 2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

Bioinspired smart surfaces, such as slippery liquid‐infused porous surfaces (SLIPS), have garnered significant attention due to their efficacy in self‐cleaning, antifouling, and antibacterial applications. Despite their advantages, SLIPS exhibit limitations such as compromised transparency, insufficient stability, and limited slippery performance, which have hindered their widespread practical use. To address these challenges, this article proposes a rational design utilizing a void‐centered poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF) membrane for slippery liquid‐infused porous surfaces with exceptional flexibility, transparency, durability, and superior slippery performance. These advancements promise to enhance high‐performance, self‐cleaning, and antifogging coatings. The membranes, featuring large‐area, thickness‐customizable void‐centered PVDF, are fabricated through a two‐step process involving phase separation and selective etching. The utilization of PVDF polymer, which has a refractive index similar to that of silicon‐based lubricant oil, enhances transparency, while macrovoids positioned at the membrane's center, acting as oil reservoirs, improve the stability and performance of the SLIPS surfaces. Experimental findings demonstrate remarkable transparency of up to 93% in the visible light range and a lubricant oil uptake of 2.32 at a porosity of 70%. Moreover, the developed SLIPS exhibit outstanding durability, maintaining slippery performance with sliding angles of <10° following exposure to either 400 consecutive droplets or aging for up to 40 days. This study significantly contributes to the development of future SLIPS, particularly for applications such as antifogging coatings on vehicle glass and solar panels, and self‐cleaning surfaces.

show abstract

Superhydrophilic membrane with photo-Fenton self-cleaning property for effective microalgae anti-fouling

Cited by 10 publications

References 42 publications

Bioinspired N-Oxide-Based Zwitterionic Polymer Brushes for Robust Fouling-Resistant Surfaces

Bioinspired N-Oxide-Based Zwitterionic Polymer Brushes for Robust Fouling-Resistant Surfaces

Generalized Multifunctional Coating Strategies Based on Polyphenol-Amine-Inspired Chemistry and Layer-by-Layer Deposition for Blood Contact Catheters

Flexible, transparent, and durable slippery liquid‐infused porous surface achieved by void‐centered PVDF‐co‐HFP membrane for self‐cleaning antifog coating

Contact Info

Product

Resources

About