ACS Applied Materials & Interfaces
·
2015
·
IF 6.723
Jing Kang,Jinsong Han,Yangyang Gao,Tianyi Gao,Shi Lan,Linghan Xiao,Yanling Zhang,Ge Gao,Harnoode Chokto,Alideertu Dong
Preventing bacterial infections is a main focus of medical care. Antibacterial agents with broad and excellent disinfection capability against pathogenic bacteria are in fact urgently required. Herein, a novel strategy for the development of N-halamine polymers from spheres to fibers using a combined copolymerization-electrospinning-chlorination technique was reported, allowing fight against bacterial pathogen. Optimizing the process conditions, e.g., comonomer molar ratio, concentration of electrospinning solution, chlorination order, and chlorination period, resulted in the formation of N-halamine fibers with controllable morphology. N-Halamine polymers were tested against two common bacterial pathogens, Escherichia coli and Staphylococcus aureus, and were found to be extremely potent against both bacteria, suggesting that they possess powerful sterilizing properties. Remarkably, compared with those with sphere morphology, N-halamine fibers show unexpected enhancement toward both pathogens possibly because of their shape (fiber morphology), surface state (rough surfaces), and surface charge (positive zeta potentials). It is believed that this approach has great potential to be utilized in various fields where antifouling and antibacterial properties are highly required.
研究领域:
材料科学
·
微生物学
·
医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Wentao Yan,Zhi Wang,Song Zhao,Jixiao Wang,Peng Zhang,Xingzhong Cao
Here, a facile and low cost strategy combining co-solvent-optimized interfacial polymerization (CSO-IP) and protective coating-controlled chlorination (PCC-chlorination) for reverse osmosis membranes with high flux-rejection combinations is reported. CSO-IP, which provides a high performance membrane for the following chlorination, is the same as the conventional IP except adding a co-solvent in the organic phase. PCC-chlorination, which improves further the flux meanwhile retaining the high rejection, is the same as the conventional chlorination except adopting a protective coating. The coating preparation is fairly short and needs no complex chemistry. Due to the accelerated diffusion of aqueous phase monomer by the co-solvent, the membrane obtained by CSO-IP possessed a skin layer with thin and dense active layers. Besides, CSO-IP made membrane surface rougher. These endowed the membrane with a high performance (brackish water desalination testing conditions). Because of the heterogeneity of coating structure, some regions of membrane were attacked by chlorine and the others were protected during PCC-chlorination. Then, PCC-chlorination improved the flux further to 82.5 L m −2 h −1 meanwhile maintaining the high rejection (99.02%). This exceeds the performance of many previously reported membranes.
研究领域:
材料科学
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化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Ying Liu,Guozhu Tong,Jing Li,Yuzhu Jin,Maoli Yin,Xuehong Ren
As living standards continue to rise, the demand for advanced cotton textiles that fulfill enhanced functional requirements has grown significantly. Therefore, the development of multifunctional antibacterial/hydrophobic cotton fabrics holds considerable practical value. In this study, a zeolitic imidazolate framework (ZIF-8) based hybrid material, ZIF/SiO 2 -LDS (Long-chain derivative of silane), was synthesized via a co-precipitation method using silica, zinc nitrate hexahydrate, 3-aminopropyltriethoxysilane (KH-550), 2-methylimidazole and hexadecyltrimethylsilane (HDTMS). The resulting hybrid particles were then applied to cotton fabric through a simple padding process, achieving a loading amount of 2.348 %. This was followed by chlorination treatment with sodium hypochlorite to introduce antibacterial functionality. Hydrophobicity was assessed through contact angle measurements, achieving a maximum contact angle exceeding 145°. Antibacterial efficacy testing revealed complete inactivation of bacteria strains, achieving 100 % effectiveness. Study on the adhesion behavior of Staphylococcus aureus and Escherichia coli showed that HZSi/cot-Cl exhibits outstanding antibacterial adhesion resistance, effectively inhibiting bacterial attachment at concentrations up to 10 6 CFU/mL within one hour. The combined antibacterial and anti-adhesive properties significantly mitigate biofilm formation on the HZSi/cot-Cl surface. Notably, the fabric retained its anti-biofilm functionality even after 50 wash cycles. This research provides valuable insights into the development of advanced antibacterial and anti-adhesive treatments for cotton fabrics.
研究领域:
材料科学
·
纳米技术
·
纺织工程
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Mengqi Shi,Wentao Yan,Yong Zhou,Zhi Wang,Lifen Liu,Song Zhao,Yanli Ji,Jixiao Wang,Congjie Gao,Peng Zhang,Xingzhong Cao
In this work, a support modified by tannic acid (TA) and a green co-solvent (dimethyl carbonate (DMC)) were used jointly to prepare high performance polyamide (PA) reverse osmosis (RO) membranes. The membrane characterization results showed that (1) the leaf-like structure became more pronounced on the membrane surface owing to the addition of DMC and (2) TA made the PA active layer thinner and denser. Because of these improvements of skin layer structure, the RO membranes prepared using TA and DMC (i.e., polysulfone (PSf)/TA-RO@DMC) had a better performance than the membranes prepared without using TA and DMC (i.e., PSf-RO) and those prepared using only TA (i.e., PSf/TA-RO) or only DMC (i.e., PSf-RO@DMC). By joining hands, TA and DMC endowed the RO membranes with a high flux of 64.2 ± 1.8 L m −1 h −2 and a high salt rejection of 99.03 ± 0.02% (the testing condition: 15.5 bar pressure, 2000 ppm NaCl feed and 25 °C). Besides, chlorination was used to improve the membrane performance further. The chlorination results showed that chlorinated PSf/TA-RO@DMC had a higher performance than chlorinated PSf-RO@DMC. This is because TA increased the compactness of PA active layer, which weakened the effect of chlorine attack on PA. After chlorination, the flux and salt rejection of PSf/TA-RO@DMC can be improved further to 90.5 ± 6.3 L m −1 h −2 and 99.25 ± 0.02%, respectively (the testing condition: 15.5 bar pressure, 2000 ppm NaCl feed and 25 °C).
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 8
·9795-9803
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IF 2.478
Wei Song,Miao Juhong,Shi Qiuwei,Shao Shaofeng,Zhang Lei
In order to obtain improvement in efficiency and stability of quantum dot light-emitting diodes (QLEDs), it is essential to seek carrier transport layer with higher carrier transport efficiency and better air stability. In terms of the high-performance carrier transport layer, solution-processed inorganic metal oxides show promise for efficient QLEDs because of their suitable energy band, high carrier mobility, especially their outstanding air stability. In this study, we employed high-quality oleic acid-capped TiO 2 nanocrystals as the electron transportation layer to fabricate air-stable inverted QLEDs. These TiO 2 nanocrystals have narrow size distribution, outstanding crystalline property, especially excellent air stability. To improve the interfacial carrier transportation performance of oleic acid-capped TiO 2 nanocrystals, we introduce a thionyl chloride (SOCl 2 ) post-ligand exchange process that replaces organic long-chain ligands with single inorganic ligands efficiently. The stability of oleic acid-capped TiO 2 -based QLEDs were evaluated by comparing with the traditional ZnO-based QLEDs. As a result, oleic acid-capped TiO 2 nanoparticles show excellent long-term air stability. This study offers an alternative strategy to deal with the stability issue of optoelectronic devices.
研究领域:
材料科学
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电子工程
✓ 已验证
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2021
·
IF 3.975
Qiang Li,Xiaotai Zhang,Lianwen Zhou,Chunhui Li,Na Zhang,Tingting Yan,Shicai Xu,Jihua Wang,Xinsheng Liu
The fabrication of a polyelectrolyte-based nanofiltration (NF) membrane with combined functions by a straightforward and scalable approach draws great attention. Herein, a polypeptide modified 1.5-bilayer polyelectrolyte NF membrane was fabricated by a novel brush assisted layer-by-layer (LBL) assembly technology using poly(allylamine hydrochloride) and poly(sodium-4-styrene sulfonate) as a polycation and a polyanion , and polylysine as a surface modifier. A denser separation layer can be formed by this approach compared to the classical static LBL assembly under the same assembled layer number. The membrane has an ultrathin separation layer (25 nm), and negatively charged surface in a neutral solution. It exhibits high rejections to potassium citrate (96.6%) and tetrasodium ethylenediamine tetraacetate (96.8%), and moderate rejection to sodium sulfate (85.3%). The molecular weight cut-off (MWCO) is 1360 Da. It also shows excellent antimicrobial property for the representative Gram-negative bacteria and fouling resistance to humic acid as foulant model. Moreover, chlorination treatment was firstly utilized to optimize the membrane structure and enhance the permeability from ca. 1.96 to 15.2 L/m 2 h bar, simultaneously keeping a high salt rejection. It was found that the chlorination process increases the negative charge density of the membrane surface and enlarges the free volumes between the polyelectrolyte chains.
研究领域:
材料科学
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化学工程
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环境科学
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2013
·Vol. 131
·期 7
·
IF 1.395
Bojian Hu,Xiaoqin Chen,Yan Zuo,Zuliang Liu,Xiaodong Xing
Bi-functional antibacterial material was prepared by co-grafting N -halamine and quaternary ammonium salt monomers from cellulose fiber. The grafted fiber was characterized by Fourier transform infrared spectra, and X-ray photoelectron spectra. The N -halamine derived from the precursor 4-[(acryloxy)methyl]-4-ethyl-2-oxazolidinone via chlorination treatment and the oxidative chlorine (Cl + ) leaching behavior were investigated. The antibacterial activities of singly (only QAs-functionalized or only Cl + -releasing) and dual (QAs-functionalized and Cl + -releasing) functional cellulose fibers were tested against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus . Compared to singly functionalized formulations, the bi-functional cellulose fiber exhibited excellent and rapid bactericidal performance against both E. coli and S. aureus . © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40070.
研究领域:
高分子科学
·
材料科学
·
微生物学
·
化学工程
·
生物技术
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhenxuan Zhang,Lianxiang Qiu,Yujian Li,Qingyao Zhu,Mengting Yang,Akihisa Inoue,Xiong Liang,Jiang Ma
While drinking water disinfection remains a cornerstone of public health by mitigating waterborne pathogens, the generation of carcinogenic disinfection by-products (DBPs) presents an escalating global challenge. This study systematically evaluates persulfate-driven advanced oxidation processes (AOPs) coupled with Fe-Si-B amorphous alloy ribbons as catalytic mediators in pre/post-chlorination treatment trains. Surface reconstruction of the metallic glass ribbons through persulfate exposure induced a hydrophilic transition (water contact angle: from 88.7° to 28.6°/43.9°), enhancing interfacial reactivity. Both peroxydisulfate (PDS, S 2 O 8 2– ) and peroxymonosulfate (PMS, HSO 5 – ) demonstrated effective activation by Fe-Si-B, achieving 61.2–88.7 % total organic carbon (TOC) removal via synergistic radical (SO 4 − / OH/ O 2 •− ) and non-radical (Fe(IV), 1 O 2 ) pathways. The best treatment group achieved with PDS/Fe-Si-B treatment followed by post-chlorination process which successfully reduced the formation of chlorinated-DBPs (Cl-DBPs) and brominated-DBPs (Br-DBPs) by 65.3 % and 67.4 %, respectively. Notably, asymmetric PMS preferentially oxidized bromide (Br – ) to hypobromous acid (HOBr), elevating Br-DBPs yields by 43.4 % during subsequent chlorination, indicating that PDS outperformed PMS in controlling the formation of DBPs. By contrast, the PDS/Fe-Si-B system suppressed more DBP formation by 44.1–49.5 % compared to conventional granular activated carbon (GAC) adsorption treatment, attributed to its superior pre-oxidation of DBP precursors. These findings establish metallic glass-activated persulfate systems as a dual-functional solution for simultaneous humic acid abatement and DBP mitigation in advanced water treatment.
研究领域:
环境工程
·
水处理
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材料科学
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化学工程
·
公共卫生
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jun Li,Peng Huang,Xiaoqi Cheng,Rongmin Wang,Yufeng He,Pengfei Song
Bacterial contamination in water bodies is potentially transmissible to humans, making water bodies a major pathway of bacterial transmission. However, existing hydantoin copolymer nanoparticles did not achieve the regulation of nanoparticle dispersion and particle size by adjusting the ratio of hydrogen-donors and hydrogen-acceptors. To tackle this issue, amphiphilic hydantoin copolymer nanoparticles (P(VBDH-BA-NVP)NPs) were synthesized by modulating hydrogen-donors and hydrogen-acceptors using emulsion polymerization, and amphiphilic N-halamine copolymer nanoparticles (P(ClV-BA-NVP)NPs) were subsequently prepared via chlorination treatment. Impressively, nanoparticle dispersion and particle size were modulated by adjusting the ratio of hydrogen-donors and hydrogen-acceptors. With the increase of nanoparticle dispersion and the decrease of particle size, the active chlorine content was gradually enlarged, and the antibacterial performance was progressively enhanced against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). More importantly, amphiphilic N-halamine copolymer nanoparticles with two-dimensional dispersing (2DD-P(ClV-BA-NVP)NPs) exhibited excellent antibacterial properties, which benefited from the dual coordination of direct contact killing and indirect release killing in aqueous medium. Through designing P(VBDH-BA-NVP)NPs with hydrogen bond interactions, this approach aims to achieve the constitutive relationship between the effective exposure of active sites and the antibacterial effect.
研究领域:
材料科学
·
纳米技术
·
高分子化学
·
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）