High hydrophilic antifouling membrane modified with capsaicin-mimic moieties via microwave assistance (MWA) for efficient water purification

Zhang, Lili; Shan, Chaoyue; Jiang, Xiaohui; Xia, Li; Yu, Liangmin

doi:10.1016/j.cej.2018.01.053

Cited by 31 publications

(17 citation statements)

References 52 publications

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“…It can be observed that the surface porosity and pore size of the PSf/PES-AM-VT membrane (Figure 6d,g) obviously increased with the addition of VTMES. This is mainly due to AMTHBA playing a leading role in the co-modification process when a small amount of VTMES was added, which was consistent with the results-the addition of AMTHBA leads to an increase in mean pore size [28]. Subsequently, the hybrid membrane exhibited a much denser surface without an obvious pore structure (Figure 6j), when the content of VTMES was 2 wt %.…”

Section: Morphologies Of the Membranessupporting

confidence: 87%

“…Hydrophilicity and wettability can be determined by static and time-dependent WCAs on the membrane surface, respectively, which is a measure of the tendency for water to wet the membrane. Figure 7 illustrates that the PSf/PES-AM membrane had the lowest contact angle among all the membranes, attributed to the inherent abundance of hydroxyl groups in AMTHBA [28]. By increasing the added content of VTMES from 0.5 to 3.0 wt % in hybrid membranes, the WCA increased from 69.6 • to 84.7 • , indicating attenuation in hydrophilic characteristics of PSf/PES-AM-VT membranes.…”

Section: Surface Wettability Of the Membranesmentioning

confidence: 99%

“…All membranes were prepared with the L-S phase inversion method, which is widely used in the application of membrane separation [35,36]. Firstly, the homogenous solution of PSf/PES was prepared in DMAc as a solvent, and PEG-400 acted as a pore-forming agent by magnetic stirring at 50 • C for 10 h. AMTHBA and AIBN were dissolved in DMAc through ultrasonication for 1 min to obtain a stable solution, and the dosage was determined according to the previous report [28]. Then, a certain amount (2 wt %) of AMTHBA in DMAc was added to the PSf/PES solution and reacted via microwave irradiation at 90 • C for 10 min.…”

Section: Membrane Preparationmentioning

confidence: 99%

“…The FTIR spectra are depicted in Figure 3, and the neat PSf/PES membrane without modifier was taken as a blank control. It can be seen that several new peaks associated with the C=C stretching vibration at 1695-1630 cm −1 , -CH 2 -vibrations at 2975-2845 cm −1 , and O-H stretching vibrations at 3370 cm −1 were observed, after the capsaicin derivative AMTHBA was successfully self-polymerized via an "MWA in situ polymerization-blending" process [28]. It is known that silicone molecules can adhere to the hydroxy group on the surface of a substrate to form a network silicone film with excellent mechanical durability and antifouling property (as shown in Figure 4) [33,42,43].…”

Section: Chemical Structures and Compositions Of The Membrane Surfacesmentioning

confidence: 99%

“…Numerous studies have reported capsaicin and its derivatives are in urgent demand to meet the increasing challenges in the fabrication of bactericidal membranes [26,27]. In our previous research, we used strategies (i) and (ii) and incorporated N-(5-methyl acrylamide-2,3,4 hydroxy benzyl) acrylamide (AMTHBA) in a membrane matrix, which resulted in excellent hydrophilicity and antibacterial [28]. Although modified surfaces containing capsaicin-mimic moieties can kill the attached bacteria, the residual dead bacteria will still contaminate the membrane, which may cause immune responses or inflammation [29,30].…”

mentioning

confidence: 99%

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Highly Dual Antifouling and Antibacterial Ultrafiltration Membranes Modified with Silane Coupling Agent and Capsaicin-Mimic Moieties

et al. 2020

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Dual antifouling and antibacterial polysulfone(PSf)/polyethersulfone(PES) hybrid membranes were developed by the synergy of capsaicin-mimic N-(5-methyl acrylamide-2,3,4 hydroxy benzyl) acrylamide (AMTHBA) and vinyl triethylene (b-methoxy ethoxy) silane (VTMES). First, AMTHBA as a natural antimicrobial agent was incorporated into a casting solution via "microwave-assistance (MWA) in situ polymerization-blending" process to construct a hydroxyl-rich environment. Then, VTMES crosslinked to a hydroxyl-rich polymer matrix via hydrolytic condensation, and the influence of VTMES content on the hybrid membrane properties was systematically investigated. When the VTMES added amount was 1.0 wt %, the hybrid membrane achieved an optimal separation performance including a steady-state humic acid (HA) (5 mg/L) permeation flux of 326 L·m −2 ·h −1 and a rejection percentage of 97%. The antibacterial tests revealed that the hybrid membranes exhibited sustained bactericidal activity and effective inhibition of bacterial adhesion. Besides, the dual-functional membranes were clean as new after two-cycles filtration (with a cleaning efficiency of~90%), indicating that the network silicone film on the surface benefits the foulant repellence. Hopefully, the dual-functional membranes constructed in this study can be applicable to the pretreatment stage of water treatment.Polymers 2020, 12, 412 2 of 17 attachment of organic fouling and bacteria; (ii) bactericidal membranes for killing attached bacteria and preventing the formation of viable biofilm, which is principally against biofouling; and (iii) dual-functional bactericidal membranes for reducing both organic fouling and biofouling [13][14][15][16]. Among these, dual-functional bactericidal modification combining two strategies into one system is considered an ideal method. For example, Zhang et al.[17] designed a dual-functional antibacterial surface with a two-step surface modification strategy, aiming to acquire the properties of fouling resistance and antibacterial performance. Besides, Xie et al. [18] co-deposited polydopamine (PDA) and a zwitterionic polymer onto a polyethersulfone (PES) substrate and then immersed the surface in a AgNO 3 solution, leading to satisfactory antibacterial and antibiofouling properties. More recently, Wu et al. [19] synthesized a bifunctional membrane by incorporating silver-polydopamine nanohybrid (Ag-PDA) nanocomposites in a polysulfone membrane matrix. These results indicated the obvious advantages of dual functionality. However, due to the absence of strong bonding with surrounding polymers, active particles can be gradually leached out during operation, which could deteriorate the membrane antifouling efficiency [20]. In addition, the release of additional agents may have some potential impacts on the environment and human health [21].Capsaicin-mimic materials used as natural antifungal and antibacterial agents exhibit strong inhibition effects on various microbes and have been widely applied to resist marine or biomedical bacterial attachmen...

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Section: Morphologies Of the Membranessupporting

confidence: 87%

Section: Surface Wettability Of the Membranesmentioning

confidence: 99%

Section: Membrane Preparationmentioning

confidence: 99%

Section: Chemical Structures and Compositions Of The Membrane Surfacesmentioning

confidence: 99%

mentioning

confidence: 99%

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Highly Dual Antifouling and Antibacterial Ultrafiltration Membranes Modified with Silane Coupling Agent and Capsaicin-Mimic Moieties

et al. 2020

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In Situ Structure Transformation of a Sprayed Gel for pH‐Ultrasensitive Nano‐Catalytic Antibacterial Therapy

Niu

Xie

Wei

et al. 2023

Adv Healthcare Materials

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Nano-catalytic bacterial killing provides new opportunities to address ever-increasing antibiotic resistance. However, the intrinsic catalytic activity usually depends on a much lower pH conditions (pH = 2-5) than that in the weakly acidic bacterial microenvironments (pH = 6-7) for reactive oxygen species production by Fenton reactions. Herein, a MnSiO 3 -based pH-ultrasensitive "in situ structure transformation" is first reported to significantly promote the adhesion between material and bacteria, and shorten the diffusion distance (<20 nm) to compensate ultra-short life (<200 ns) of •OH generated by Mn 2+ -mediated Fenton-like reaction, finally enhancing its nano-catalytic antibacterial performance in weakly acidic conditions. A separated spray bottle is further designed to achieve in situ gelation at the wound site, which demonstrates excellent shape adaptability to complicated and rough surfaces of wounds, allowing for long-term nano-catalyst release. As a result, bacterial-infected wound healing is efficiently promoted. Herein, the in situ sprayed nano-catalytic antibacterial gel presents a promising paradigm for bacterial infection treatment.

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Antibacterial Hybrid Hydrogels

Cao

Luo

et al. 2020

Macromolecular Bioscience

121

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Bacterial infectious diseases and bacterial‐infected environments have been threatening the health of human beings all over the world. In view of the increased bacteria resistance caused by overuse or improper use of antibiotics, antibacterial biomaterials are developed as the substitutes for antibiotics in some cases. Among them, antibacterial hydrogels are attracting more and more attention due to easy preparation process and diversity of structures by changing their chemical cross‐linkers via covalent bonds or noncovalent physical interactions, which can endow them with various specific functions such as high toughness and stretchability, injectability, self‐healing, tissue adhesiveness and rapid hemostasis, easy loading and controlled drug release, superior biocompatibility and antioxidation as well as good conductivity. In this review, the recent progress of antibacterial hydrogel including the fabrication methodologies, interior structures, performances, antibacterial mechanisms, and applications of various antibacterial hydrogels is summarized. According to the bacteria‐killing modes of hydrogels, several representative hydrogels such as silver nanoparticles‐based hydrogel, photoresponsive hydrogel including photothermal and photocatalytic, self‐bacteria‐killing hydrogel such as inherent antibacterial peptides and cationic polymers, and antibiotics‐loading hydrogel are focused on. Furthermore, current challenges of antibacterial hydrogels are discussed and future perspectives in this field are also proposed.

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High hydrophilic antifouling membrane modified with capsaicin-mimic moieties via microwave assistance (MWA) for efficient water purification

Cited by 31 publications

References 52 publications

Highly Dual Antifouling and Antibacterial Ultrafiltration Membranes Modified with Silane Coupling Agent and Capsaicin-Mimic Moieties

Highly Dual Antifouling and Antibacterial Ultrafiltration Membranes Modified with Silane Coupling Agent and Capsaicin-Mimic Moieties

In Situ Structure Transformation of a Sprayed Gel for pH‐Ultrasensitive Nano‐Catalytic Antibacterial Therapy

Antibacterial Hybrid Hydrogels

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