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China Ocean Engineering 2024年第3期38卷 483-490页

作者： YI Peng QIU Hong-yuan LI Yong CAI Bao-ping Javad MOSTAGHIMI ZHANGWen-jie XIAO Wen-sheng College of Mechanical and Electrical Engineering China University of PetroleumQingdao 266580China CNOOC EnerTech Equipment Technology Co. Ltd.Tianjin 300450China Department of Mechanical&Industrial Engineering University of TorontoToronto ONM5S3G8Canada

biofouling has been a persistent problem in marine riser system, resulting in energy waste and equipment damage. Inthis study, a kind of water wave-driven contact-mode flexible triboelectric nanogeneration has been prepared byusing graphene-doped PDMS as dielectric friction material. When the graphene content is 2%, the average outputvoltage can reach 46 V under the contact frequency 10 Hz. The flexible triboelectric nanogeneration encapsulationmodule is impinged by water waves to generate alternating microelectric field on the riser surface and destroy theadhesion conditions of microorganisms during the biofilm stage. In the biofouling experiments at different stages, thebiofouling area of the platymonas subcordiformis has been reduced by 53%, 62% and 61%. It provides a new ideafor effective treatment of biofouling of mussels, oysters and barnacles attached to risers.

关键词： wave-drive triboelectric nanogeneration alternating microelectric field anti-biofouling

anti-biofouling strategies for implantable biosensors of continuous glucose monitoring systems

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Frontiers of Chemical Science and Engineering 2023年第12期17卷 1866-1878页

作者： Yan Zheng Dunyun Shi Zheng Wang School of Pharmaceutical Science&Technology Tianjin UniversityTianjin 300072China Institute of Hematology Shenzhen Second People’s Hospital/the First Affiliated Hospital of Shenzhen UniversityShenzhen 518035China

Continuous glucose monitoring(CGM)systems play an increasingly vital role in the glycemic control of patients with diabetes mellitus.However,the immune responses triggered by the implantation of poorly biocompatible sensors have a significant impact on the accuracy and lifetime of CGM systems.In this review,research efforts over the past few years to mitigate the immune responses by enhancing the anti-biofouling ability of sensors are summarized.This review divided these works into active immune engaging strategy and passive immune escape strategy based on their respective mechanisms.In each strategy,the various biocompatible layers on the biosensor surface,such as drug-releasing membranes,hydrogels,hydrophilic membranes,anti-biofouling membranes based on zwitterionic polymers,and bio-mimicking membranes,are described in detail.This review,therefore,provides researchers working on implantable biosensors for CGM systems with vital information,which is likely to aid in the research and development of novel CGM systems with profound anti-biofouling properties.

关键词： implantable glucose biosensor anti-biofouling continuous glucose monitoring immune responses

Achieving anti-corrosion and anti-biofouling dual-function self-healing coating by natural carrier attapulgite loading with 2-Undecylimidazoline

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Journal of Materials Science & Technology 2023年第17期148卷 222-234页

作者： Yinghao Wu Jinming Wei Xiaolu Shi Wenjie Zhao Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Ningbo New Material Testing and Evaluation Center Co. LtdNingbo 315048China

In the marine environment,the protective coatings face serious corrosion and biofouling problem,lim-itations,and challenges that made self-healing coatings unable to perform both anti-corrosion and anti-biofouling dual-function at the same time.Here we constructed the corrosion resistance and anti-biofouling self-healing coating by integrating nano-containers into the coating matrix,the 2-Undecylimidazoline(ULM)acted as a corrosion inhibitor and anti-biofouling dual-functional agent which was loaded on the natural container attapulgite(ATP).To obtain high healing efficiency,a fluidity-driven self-healing silicone oil coating was thickened by fibrous ATP to enhance its stability,which played a key role in the self-healing and long-term corrosion resistance.The self-healing time of ULM@ATP rein-forced oil coating was 4 s at least in the air and up to 30 s in the 1 M HCl solution.Meanwhile,the ULM@ATP can significantly enhance the corrosion resistance of the self-healing coating,with the best effect achieved when the content of ULM@ATP was 5 wt.%.The impedance modulus of ULM@ATP-2 still reached 1.62×10^(8)Ωcm^(2) after 480 immersion in 3.5 wt.%NaCl solution,which is 3 orders of magnitude high than pure Oil coating(2.17×10^(5)Ωcm^(2)).The restructure of the ATP network and the release of ULM could largely inhibit the corrosion of metal.The continuous open circuit potential of the compos-ite coating performed the potentially infinite self-healing capacity.The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability.This anti-corrosion and anti-biofouling(the surface coverage of adhered chlorella decreased 96.88%)dual-function strategy of self-healing coatings could be also realized by many other porous nano-materials or function modifications.The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability.This anti-corrosion and anti-biofouling dual-function strategy of self-healing co

关键词： Self-healing Active corrosion resistance anti-biofouling Attapulgite

A metallic anti-biofouling surface with a hierarchical topography containing nanostructures on curved micro-riblets

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Microsystems & Nanoengineering 2022年第1期8卷 83-96页

作者： Taekyung Kim Sunmok Kwon Jeehyeon Lee Joon Sang Lee Shinill Kang National Center for Optically-assisted high precision Mechanical Systems Yonsei UniversitySeoul 03722Korea School of Mechanical Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul 03722Korea

Metallic surface finishes have been used in the anti-biofouling,but it is very difficult to produce surfaces with hierarchically ordered structures.In the present study,anti-biofouling metallic surfaces with nanostructures superimposed on curved micro-riblets were produced via top-down fabrication.According to the attachment theory,these surfaces feature few attachment points for organisms,the nanostructures prevent the attachment of bacteria and algal zoospores,while the micro-riblets prohibit the settlement of macrofoulers.Anodic oxidation was performed to induce superhydrophilicity.It forms a hydration layer on the surface,which physically blocks foulant adsorption along with the anti-biofouling topography.We characterized the surfaces via scanning electron and atomic force microscopy,contact-angle measurement,and wear-resistance testing.The contact angle of the hierarchical structures was less than 1°.Laboratory settlement assays verified that bacterial attachment was dramatically reduced by the nanostructures and/or the hydration layer,attributable to superhydrophilicity.The micro-riblets prohibited the settlement of macrofoulers.Over 77 days of static immersion in the sea during summer,the metallic surface showed significantly less biofouling compared to a surface painted with an anticorrosive coating.

关键词： anti-biofouling Superhydrophilic Hierarchical topography Metallic engineered surface Nanoimprinting,static immersion test,field trials

Facile Li-Al layered double hydroxide films on Al alloy for enhanced hydrophobicity, anti-biofouling and anti-corrosion performance

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Journal of Materials Science & Technology 2021年第20期79卷 230-242页

作者： Ji Li Tianci Yuan Chengliang Zhou Bo Chen Yi Shuai Dawang Wu Dongchu Chen Xiaohu Luo Y.Frank Cheng Yali Liu State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha410082China Department of Mechanical and Manufacturing Engineering University of CalgaryCalgaryAlbertaT2N 1N4Canada School of Chemistry and Chemical Engineering Qiannan Normal University for NationalitiesDuyun558000China College of Mechanical Engineering and Applied Electronics Technology Beijing University of TechnologyBeijing100124China School of Material Science and Energy Engineering Foshan UniversityFoshan528000China

In this work,lithium(Li)-aluminum(Al)layered double hydroxide(LDH)films modified by 4-amino-2-((hydrazine methylene)amino)-4-oxobutanoic acid(denoted as AOA acid)and/or 1H,1H,2H,2H-perfluorooctyltriethoxysilane were prepared on 6N01 Al alloy by a facile,in-situ growth method with enhanced hydrophobicity,anti-biofouling and anti-corrosion performance.The preparation is low energy consumptive and environment friendly,relying on self-assembly at ambient temperature.The structure,molecular weight and functional groups of the synthesized AOA acid were characterized by NMR spectrometer,ESI-MS spectrometer and Fourier transform infrared(FT-IR)spectroscopy.And the compositions,structure and morphology of the films were characterized by Fourier transform infrared(FT-IR)spectroscopy,glancing-angle X-ray diffraction(GA-XRD),X-ray photoelectron spectroscopy(XPS),field emission scanning electron microscopy(FE-SEM)and energy-dispersive x-ray spectrum(EDS).Water contact angle measurements(CA)and atomic force microscopy(AFM)characterization show that the films possess a micro/nanostructure with an improved hydrophobicity.Immersion test,neutral salt tests(NSS)and electrochemical impedance spectroscopy(EIS)conducted in 3.5 wt.%NaCl solutions demonstrate the improved corrosion resistance of the films over bare Al alloy.Meanwhile,the films also possess an excellent anti-bacterial property toEscherichia coli,Bacillus subtilis and sulfate-reducing bacteria.

关键词： Li-Al layered double hydroxides anti-biofouling Hydrophobicity anti-bacterial anti-corrosion

anti-biofouling BY DEGRADATION OF POLYMERS

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Chinese Journal of Polymer Science 2012年第3期30卷 337-342页

作者： Chun-feng Ma Hong-jun Yang 张广照 Faculty of Materials Science and Engineering South China University of TechnologyGuangzhou 510640Chin Hefei National Laboratory for Physical Sciences at Microscale Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026China

Copolymers of methyl methacrylate （MMA） and acrylate terminated poly（ethylene oxide-co-ethylene carbonate）（PEOC） macromonomer （PEOCA） were synthesized, and the degradation of the polymers was investigated by use of quartz crystal microbalance with dissipation （QCM-D）. It is shown that the polymeric surface exhibits degradation in seawater depending on the content of the side chains. Field tests in seawater show that the surface constructed by the copolymer can effectively inhibit marine biofouling because it can be self-renewed due to degradation of the copolymer.

关键词： anti-biofouling Degradation Poly（ethylene carbonate） Poly（ethylene oxide）.

Fabrication of anodized superhydrophobic 5083 aluminum alloy surface for marine anti-corrosion and anti-biofouling

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Journal of Oceanology and Limnology 2020年第4期38卷 1246-1255页

作者： ZHANG Jie WANG Jia ZHANG Binbin ZENG Yuxiang DUAN Jizhou HOU Baorong CAS Key Laboratory of Marine Environmental Corrosion and biofouling Institute of OceanologyChinese Academy of SciencesQingdao 266071China Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and TechnologyQingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Marine corrosion and biofouling seriously affect the service life of marine structural materials,resulting in performance failure,enormous economic loss,and even catastrophic safety accidents.It is worthwhile and desirable to develop high-efficiency strategy for anti-corrosion and anti-biofouling.In this paper,superhydrophobic 5083 aluminum alloy(AA5083)surface with micro-nano hierarchical morphology was fabricated through anodization followed by 1H,1H,2H,2H-perfluorooctyltriethoxysilane(POTS)modification.The surface morphologies,roughness,and chemical compositions were revealed by scanning electron microscopy,atomic force microscopy,and X-ray diffraction.The self-cleaning ability,corrosion resistance and algae adhesion suppression ability of the fabricated surfaces were investigated,indicating an excellent water-proofing,anti-corrosion and anti-biofouling performance.We believe the superhydrophobic creation of metallic materials is expected to have potential applications in marine corrosion and antibiofouling fields.

关键词： 5083 aluminum alloy anodization superhydrophobic corrosion resistance anti-biofouling

Lubricant skin on diverse biomaterials with complex shapes via polydopamine-mediated surface functionalization for biomedical applications

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Bioactive Materials 2023年第7期25卷 555-568页

作者： Kijun Park Seunghoi Kim Yejin Jo Jae Park Inwoo Kim Sooyoung Hwang Yeontaek Lee So Yeon Kim Jungmok Seo School of Electronic and Electronic Engineering Yonsei UniversitySeoul03722Republic of Korea Center for Biomaterials Biomedical Research InstituteKorea Institute of Science and TechnologiesSeoul02792Republic of Korea Center for Theragnosis Biomedical Research InstituteKorea Institute of Science and TechnologiesSeoul02792Republic of Korea

Implantable biomedical devices require an anti-biofouling,mechanically robust,low friction surface for a prolonged lifespan and improved performance.However,there exist no methods that could provide uniform and effective coatings for medical devices with complex shapes and materials to prevent immune-related side effects and thrombosis when they encounter biological tissues.Here,we report a lubricant skin(L-skin),a coating method based on the application of thin layers of bio-adhesive and lubricant-swellable perfluoropolymer that impart anti-biofouling,frictionless,robust,and heat-mediated self-healing properties.We demonstrate biocompatible,mechanically robust,and sterilization-safe L-skin in applications of bioprinting,microfluidics,catheter,and long and narrow medical tubing.We envision that diverse applications of L-skin improve device longevity,as well as anti-biofouling attributes in biomedical devices with complex shapes and material compositions.

关键词： anti-biofouling Lubricant-infused Biomedical applications Biomaterials Biointerface

Alkynyl-Based sp^(2) Carbon-Conjugated Covalent Organic Frameworks with Enhanced Uranium Extraction from Seawater by Photoinduced Multiple Effects

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CCS Chemistry 2021年第11期3卷 168-179页

作者： Cheng-Rong Zhang Wei-Rong Cui Rui-Han Xu Xiao-Rong Chen Wei Jiang Yi-Di Wu Run-Han Yan Ru-Ping Liang Jian-Ding Qiu College of Chemistry Nanchang UniversityNanchang 330031

biofouling is a major obstacle to the efficient extraction of uranium from seawater due to the numerous marine microorganisms in the ocean.Herein,we report a novel amidoxime(AO)crystalline covalent organic framework(BD-TN-AO)by Knoevenagel condensation reaction of 2,2′,2″-(benzene-1,3,5-triyl)triacetonitrile(TN)and 4,4′-(buta-1,3-diyne1,4-diyl)dibenzaldehyde(BD)that is highly conjugated and possesses excellent photocatalytic activity.The excellent photocatalytic activity endows the BDTN-AO high anti-biofouling activity by producing biotoxic reactive oxygen species(ROS)and photogenerated electrons to efficiently reduce the loaded U(VI)to insoluble U(IV).Meanwhile,the surfacepositive electric field has strong electrostatic attraction to the negative[UO2(CO3)3]4−in seawater,which can significantly enhance the extraction capacity of uranium.Benefiting from these outstanding photoinduced effects of BD-TN-AO,the adsorbent exhibits a high uranium adsorption capacity of 5.9 mg g−1 under simulated sunlight irradiation in microorganism-containing natural seawater,which is 1.48 times the adsorption capacity in darkness.

关键词： covalent organic frameworks photocatalytic adsorption uranium anti-biofouling