JOURNAL OF THERMAL SPRAY TECHNOLOGY
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2021
·Vol. 31
·期 1
·119-129
·
IF 2.757
Wen Jianxin,Song Ziheng,Chen Xiuyong,Li Hua
Biofouling has been persisting as a worldwide problem due to the difficulties in finding efficient environment-friendly antifouling coatings for long-term applications. Developing novel coatings with desired antifouling properties has been one of the research goals for surface coating community. Recently hydrogel coating was proposed to serve as antifouling layer, for it offers the advantages of the ease of incorporating green biocides, and resisting attachment of microorganisms by its soft surface. Yet poor adhesion of the hydrogel on steel surfaces is a big concern. In this study, porous matrix aluminum coatings were fabricated by cored wire arc spray, and the sizes of the pores in the aluminum (Al) coatings were controlled by altering the size of the cored powder of sodium chloride. Silicone hydrogel was further deposited on the porous coating. The hydrogel penetrated into the open pores of the porous Al coatings, and the porous Al structure significantly enhanced the adhesion of the hydrogel. In addition, hydrogel coating exhibited very encouraging antifouling properties.
研究领域:
材料科学
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表面工程
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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
Xiaobin Yang,Linlin Yan,Jun Ma,Yongping Bai,Lu Shao
The membrane separation technique can strongly advance the energy-efficient water remediation due to its low cost and small footprint. However, the inherent hydrophobicity of most polymeric membrane materials limits the water-treatment efficiency, which urgently requires to develop surface hydrophilization engineering on hydrophobic polymeric membranes. Inspired by the structure/function characteristics of robust mussel/tunicate adhesive proteins, a one-step, eco-friendly, and cost-effective biomimetic coating system was designed and utilized to realize membrane surface hydrophilization via the intermolecular “amino/mercapto-pyrogallol bridges”. The as-coated poly(vinylidene fluoride) micro-/ultra-filtration (MF/UF) membranes exhibited greatly enhanced wettability , good harsh condition tolerance, high filtration efficiency, and excellent fouling resistance. Both of emulsified oily and simulated protein wastewater were remediated accordingly. The optimal MF membrane demonstrated a pure water flux as high as ca. 7900 L m −2 h −1 (47 times higher regarding the pristine membrane), and oil rejection efficiency beyond ca. 99.5% during the cycling emulsion filtration tests. The coated UF membrane possessed a benign protein interception efficiency (BSA rejection of ca. 95.4% with water flux of ca. 400.7 L m −2 h −1 ) and greatly enhanced fouling resistance (78.0% increment). The new biomimetic synergistic coating strategy can promote the rapid development of advanced membranes via elegant surface manipulation towards water-energy nexus.
研究领域:
材料科学
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环境工程
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Xianhong Ye,Dingming Yu,Yalong Liao,Yang Si,Jianyong Yu,Xia Yin,Bin Ding
Copper hydroxide (Cu(OH) 2 ) has been elected as a newly-emerging green disinfectant to deal with membrane biofouling in the treatment of bacteria-contaminated water; however, the decoration strategy of it with the granular form on membrane substrates limits the practical application. Here a novel surface-confined methodology was proposed for preparing freestanding Cu(OH) 2 nanosheet-assembled nanofibrous membranes (CNNMs) with the anti-biofouling property via the in-suit coprecipitation and heat-induced growth method. The vertically aligned Cu(OH) 2 nanosheets were in-suit rooted on the surface of the nanofiber scaffold with high binding fastness. The acquired CNNMs possess comprehensive performances of high porosity, prominent mechanical strength, fatigue resistance, and superior bactericidal efficiency of 99.999%, which endowed the CNNMs ultrahigh filtration fluxes (24000 L m −2 h −1 ) and durability to disinfect bacteria-containing water effectively. This facile strategy may throw light on manufacturing novel inorganic nanosheet-rooted nanofibrous membranes for water disinfection and public health.
研究领域:
环境科学
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材料科学
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生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2022
·
IF 4.865
Jiangfan Chang,Xiaoyan He,Zongcheng Yang,Xiuqin Bai,Robert J.K. Wood,Julian A. Wharton,Ping Lu,Chengqing Yuan
Nature-inspired eco-friendly superhydrophobic surfaces have attracted great interests from fundamental research to antifouling application. Nanocomposite coatings are an economical way to fabricate superhydrophobic surfaces. This paper studies how the coating topography can be controlled by using different nanoparticle sizes and concentrations. Six three-dimensional surface parameters are used to define the resulting topography and explore the correlations with wettability . Three unique scenarios are proposed based on the relationship between the two key parameters core void volume (Vvc) and core material volume (Vmc) to assess the relationship between surface roughness and solid-liquid contact area fraction ( f ). A water contact angle (WCA) of 152.6° and contact angle hysteresis (CAH) of 2.9° are obtained by employing dual-sized nanoparticles at 45% nanoparticle concentration (wt./wt.), which is up to 10% less than the superhydrophobic coating fabricated by using single-sized nanoparticles (30 nm). Furthermore, Vvc and peak sharpness dominate f , consequently dominating the wettability in the transitional state and Cassie state, respectively. The antifouling tests using Phaeodactylum tricornutum and Bacillus sp. show a negative correlation between f and antifouling performance, and the minimum adhesion ratios are only 0.41% and 0.53%, respectively. The superhydrophobic surfaces with Vvc/Vmc > 1 are shown to be better for antifouling applications. These findings are important for designing superhydrophobic nanocomposite coatings for antifouling performance.
研究领域:
材料科学
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生物学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Mingyu Xie,Wenjie Zhao,Yinghao Wu
Fabricating slippery lubricant-infused porous surfaces (SLIPS), typically composed of lubricant and microstructured surface, is an effective way to solve the problem of marine anti-fouling. In the present work, acetone acted as a volatile solvent, and epoxy resin acted as a linking agent were mixed with one-dimensional material with different length (300-nm carbon nanotubes, 300-μm carbon fiber, and 1-mm polyacrylonitrile fiber). After acetone volatilized, one-dimensional materials with different length could form various kind of internal or surface structures. 300-μm carbon fiber could form a hierarchical structure with both internal holes and vertical needle-shaped structures, which effectively ensured the storage stability of lubricant in the structure. And through 21 days of algae attachment experiment, compared with the bare epoxy resin, the lubricant-infused carbon fiber structure (SLIPS-EP/CF) displayed superior anti-fouling performance with the reduction rate of chlorella was 91.4% and the phaeodactylum tricornutum was 77.8%. Additionally, the TEM and SEM analysis showed the attachment of algae to the surface of lubricant, and it was interesting to observe that algae could be wrapped by silicone oil and could not produce algae biofilm, which was presented by the first time. Since the formation of algae biofilm was inhibited, a large number of algae attachment was avoided, thereby realizing effective antifouling performance.
研究领域:
海洋生物学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Hanjun Jiang,Haoming Wang,Zhouyi Zhu,Xianfu Chen,Minghui Qiu,Yiqun Fan
Potassium sodium niobates (KNNs) have garnered significant attention owing to their lead-free nature and potential for use in self-cleaning membranes. This paper presents the synthesis of (K 0.5 Na 0.5 )NbO 3 materials for the fabrication of porous membranes, which enable in situ ultrasonic resonance to effectively eliminate contaminants from the membrane surface . KNN powder was synthesized via solid-state reactions, and the membranes were prepared using conventional sintering techniques. The effects of ball-milling time and calcination temperature on the phase structure, pore size, permeance, flexural strength , chemical stability, and piezoelectric properties were comprehensively investigated. The optimal membranes exhibited an average pore size of approximately 300 nm, a porosity of 23 %, and permeance of 220 L m −2 h −1 bar −1 at a sintering temperature of 1050 °C. A polarized electrical field with a strength of 1 kV/mm was applied to the membranes, resulting in an ultrasonic response of 20 mV at an excitation voltage of 20 V with a frequency of 200 kHz. Furthermore, the in situ anti-fouling performance was evaluated by conducting filtration tests on a 500 ppm oil-in-water (O/W) emulsion, demonstrating that the stationary flux increased by 46.7 % when subjected to an excitation voltage of 60 V.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Yuyang Yao,Junjie Mu,Junbin Liao,Jun Dong,Bin Luo,Huimin Ruan,Zhenlu Shen,Jiangnan Shen
In this work, a series of modified anion exchange membranes (AEMs) has been prepared via self-polymerization of L-dopa on the surface of commercial AEM (Fuji I type), followed by grafting the 4-amino-benzenesulfonic acid monosodium salt (ABS) on L-polydopamine thin layer. The chemical structures of modified AEMs were confirmed by the FTIR and XPS spectra. Our investigation demonstrates that the surface resistance of the modified AEM (L-PDA@ABS-Cl) increases slightly from 1.90 Ω cm 2 to 2.37 Ω cm 2 and the hydrophilicity of L-PDA@ABS-Cl significantly improves, verifying by the decreased water contact angles from 86.42° to 67.25°. The difference between pristine AEM and L-PDA@ABS-Cl in desalination rates only remained less than 4% throughout the test of 240 min. The modified AEMs have the negatively charged functional layers which produce an electrostatic repulsion effect and negatively charged bacteria cannot attach to the membrane surface. As a result, L-PDA@ABS-Cl shows good performance on fouling resistance, good inhibition effect on Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). Low surface resistance and superior foul inhibition performance indicate the potential application of modified AEMs in electrodialysis (ED).
研究领域:
材料科学
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环境工程
·
生物医学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Zhixin Li,Lizhi Zhao,Lixian Wang,Xianglong Xiao,Xiaofu Wang,Huiqin An,Hui Ye,Qingping Xin,Yuzhong Zhang
Membranes have been widely used in oil/water separation due to their high efficiency, convenient operation and low cost. However, poor fluidity of viscous oil and membrane fouling remain challenges for efficient oil/water separation using membranes. This study proposes a “two-in-one” design strategy that integrates photothermal properties and liquid-filled slippery surface into a porous membrane, aiming to address these issues. The photothermal responsive liquid-filled membrane is prepared by sequentially depositing silver nanoparticles (Ag NPs), hydrophobic modification with octadecanethiol (ODT), and filling with castor oil, on the polyethersulfone (PES) porous membrane. Under irradiation, the photothermal effect of the Ag NPs layer causes a surface temperature rise, leading to more slippery surface formed by the filled oil layer that is stably locked in the rough nanostructured underlayer; in oil/water separation, the membrane shows significantly improved oil flux, separation efficiency and fouling resistance due to the decreased oil viscosity and the excellent water repellency of the slippery liquid layer. After 10 cycles, the separation efficiency remains above 93.0%. The membrane also has perfect photothermal antibacterial and anti-biological adhesion properties. This multifunctional membrane has important prospects in the recovery of viscous oil from the ocean or wastewater and the development of energy-saving materials.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Shihan Wu,Kaige Yan,Baoluo He,Yi Wang,Shenghua Xue,Shujuan Liu,Qian Ye,Feng Zhou
Herein, a silica sol was firstly prepared and coated on the glass substrate, followed by a co-deposition of tannic acid (TA) and 3-aminopropyltriethoxysilane (APTES) to form a hydrophilic layer. Subsequently, the zwitterionic polymer PEIS (polyethylenimine-quaternized derivative) was grafted onto the glass surface via Schiff-base reaction and/or Michael addition between the amino of PEIS and phenolic hydroxyl groups of TA, resulting in the formation of zwitterionic polymer PEIS-functionalized glass substrate (Glass@Silica Sol-PEIS). The thickness and surface roughness of the as-prepared Glass@Silica Sol-PEIS coating was 0.71 μm and 60.2 nm measured by AFM, respectively. Compared with the unmodified glass substrate, the Glass@Silica Sol-PEIS effectively prevented the adhesion of over 96 % of microalgae and 80 % of bacteria on its surface. The excellent antibacterial and antifouling ability can be attributed to the bactericidal activity of quaternary amine groups in PEIS and strong surface hydration effect of zwitterionic polymer PEIS. In addition to glass substrate, the novel coatings demonstrate versatility by being applicable to various substrates such as metal, fabric and plastic, showing a promising prospects for widespread application.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2021
·
IF 6.609
Peng Shi,Yuxia Gou,Jiao Li,Qiulu Zheng,Xiao Zhong,Ming Duan,Wanfen Pu
Oily wastewater is a potential resource for recycled crude oil; however, the formation of oil sludge during water disposal makes the oil unrecyclable. In this study, a hydrogel coalescer was prepared by polymerization grafting of acrylamide on a metal tube filter, which separated the emulsion into layers of water and oil when the oily water permeated the 1-mm-thick wall. The oil was easily recycled without any oil sludge formation. The material had an oil removal efficiency of 98% at a high flux up to 5000 L/(m 2 ·h) up to an inlet pressure of 3 bar. The oil exhibited weak adhesion to the coalescer and could be easily flushed away. The fouling analysis showed bubbles, and the formation of the water-in-oil (W/O) emulsion led to the blocking of the pore. After the addition of a demulsifier into the hydrogel, the formation of the W/O emulsion was strongly suppressed, and the material showed an enhanced anti-blocking performance and higher flux. Hence, we developed a potential reagent-free solution for the disposal of oily wastewater and a recycling technique for obtaining crude oil from it.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yuxuan Wang,Jingjing Wei,Yongda Wang,Pei Nian,Wentao Wang,Dong Wei,Nan Xu,Taotao Zhu,Zhixin Wu,Yibin Wei
Engineering of superhydrophobic-superoleophilic (SHB-SOL) ceramic membrane surface with hierarchical structures remains challenging and the relation between physicochemical structure-dependent wettability and separation performance lacks investigation. Herein, SHB-SOL SiC ceramic membranes with different hierarchical micro-nano structures were fabricated by ZnO nanoflower (NF) deposition and silane grafting. Three SiC ceramic membranes with different pore sizes were purposefully used as the pristine, these membranes displayed similar geometric structures in different scales. The modified SiC membrane surface becomes stronger in SHB-SOL property as the pore size decreases and the optimal membrane possessing the lowest pore size presented a water contact angle of 172.46° and a water sliding angle of 5°. When used for pure oil or oily mixture separation, all the SHB-SOL SiC membranes exhibited enhanced oil fluxes compared with their pristine forms. At a pressure of 0.5 bar, the optimal membrane could completely reject water droplets and graphite solids (D 50 =4.8 µm) for the oil-water-solid mixture containing 0.05 wt% water and 0.05 wt% graphite, showing a stable oil (hexane) flux of 1383.8 L·m −2 ·h −1 . This work also reveals the effects of the hierarchical structures on the SHB-SOL property formation and the resulting antifouling mechanism, which offers novel insights into boosting ceramic membranes with desired surface wettability for enhanced separation performance.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 29
·e55663
·
IF 2.7
Gongwei Xia,Xiao Xu,Jianfang Chen,Ruitao Jiang,Hao Zheng
A facile strategy to construct superhydrophobic coatings was carried out by one-pot process using novel nano zero-valent iron and hydrogen peroxide as trigger in ethanol and Tris buffer mixed system containing dopamine and 1H,1H,2H,2H-perfluorodecanethiol (PFDT) for the first time. The polydopamine (PDA) modified by PFDT composite coating can be deposited onto various substrates including glass slides, polyurethane sheets, polytetrafluoroethylene wafers, 304 stainless steel sheets, and polyurethane sponges, revealing excellent hydrophobicity with the water contact angles from 157.1° to 162.2° and the sliding angle lower than 1°. The flourier transformed infrared spectroscopy and x-ray photoelectron spectroscopy information of the composite coating demonstrated the successful covalent interaction between catechol group in PDA and thiol group of PFDT via Michael addition reaction. As-prepared PFDT/PDA composite coatings exhibited enhanced chemical stability in highly acidic solutions for 6 days, alkaline aqueous solutions for 5 days, salty solutions (3.5 wt%) for 28 days, and polar organic solvents for 24 h, respectively, as well as resistance to algae adhesion. The excellent corrosion resistance and chemical stability of the composite coating and their simple, time saving and inexpensive construction process are expected to be widely applied in various areas, including marine anti-corrosion, anti-fouling, and oil–water separation.
研究领域:
材料科学
·
表面工程
·
防腐蚀技术
·
海洋科学
✓ 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）