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Advanced strategies for marine antifouling based on nanomaterial-enhanced functional PDMS coatings

Nano Materials Science 2024年第4期6卷 375-395页

作者： Xiaohui Shi Hao Wei Wenjun Zhou Paul E.D.Soto Rodriguez cunguo lin Lei Wang Zhijia Zhang School of Materials Science and Chemical Engineering Harbin Engineering University Qingdao Innovation and Development Center of Harbin Engineering University State Key Laboratory for Marin Corrosion and Protection Luoyang Ship Material Research Institute (LSMRI) Instituto de Estudios Avanzados IUDEA Departamento de Física Universidad de La Laguna C/Astrofísico Francisco Sanchez School of Chemistry and Chemical Engineering Harbin Institute of Technology

Marine biofouling seriously affects human marine exploitation and transportation activities, to which marine antifouling(AF) coatings are considered to be the most cost-effective solution. Since the mid-20th century, human beings have dedicated their efforts on developing AF coatings with long cycle and high performance, leading to a large number of non-target organisms? distortion, death and marine environmental pollution. Polydimethylsiloxane(PDMS), is considered as one of the representative environment-friendly AF materials thanks to its non-toxic, hydrophobic, low surface energy and AF properties. However, PDMS AF coatings are prone to mechanical damage, weak adhesion strength to substrate, and poor static AF effect, which seriously restrict their use in the ocean. The rapid development of various nanomaterials provides an opportunity to enhance and improve the mechanical properties and antifouling properties of PDMS coating by embedding *** on our research background and the problems faced in our laboratory, this article presents an overview of the current progress in the fields of PDMS composite coatings enhanced by different nanomaterials, with the discussion focused on the advantages and main bottlenecks currently encountered in this field. Finally, we propose an outlook, hoping to provide fundamental guidance for the development of marine AF field.

关键词： Nanomaterials Antifouling PDMS composites Environment-friendly Marine biofouling

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Extraction of Protease Produced by Sea Mud Bacteria and Evaluation of Antifouling Performance

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Journal of Ocean University of China 2019年第5期18卷 1139-1146页

作者： WANG Li YU Liangmin lin cunguo College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteQingdao 266101China

Enzyme-based antifouling coatings are potential alternative to traditional tributyltin-based coatings in the marine biofouling control depended on its environmental *** are usually the key antifouling active components in enzyme based antifouling *** this work,based on biological antagonism effect,a marine proteolytic bacterial strain of Bacillus velezensis was isolated from the sea mud,and denoted as *** scanning electron microscope(SEM)revealed that the bacteria are rod-shaped with length 1-1.3μ*** protease-producing conditions of SM-1 were investigated,and it was found that the culture solution displays higher proteolytic activity under the culture conditions of 35℃,10‰-20‰salinity,pH 6-9 and more than 7 d culture ***,the 25 kDa protein was confirmed to be the main active component in the crude protease,which was revealed via the experiment of *** antifouling assay indicated that the protease SM-1 has remarkable effect on the decomposition of barnacle cement and diatom secretion,and also can effectively inhibit the attachment of barnacle cyprids,diatom and mussel ***,this protease potentially can be used as environmental-friendly antifoulant of enzyme-based marine antifouling coatings,and this work also provides a new approach to obtain antifouling protease via isolating proteolytic bacteria from the sea mud surrounding representative fouling organisms.

关键词： biofouling protegolytic bacteria protease antifouling coatings

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流动海水冲刷下TA2纯钛管路钝化膜腐蚀特性研究

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中国腐蚀与防护学报 2024年第4期44卷 1038-1046页

作者：彭文山邢少华钱峣蔺存国侯健张大磊中国船舶集团有限公司第七二五研究所、海洋腐蚀与防护全国重点实验室青岛266237 青岛市即墨区工业和信息化局青岛266205 中国石油大学(华东)材料科学与工程学院青岛266580

TA2纯钛是新一代船舶海水管路材料,在海水冲刷下管路钝化膜失效会导致管路耐久性下降。研究海水冲刷对不同表面处理TA2纯钛腐蚀行为的影响对于评估TA2纯钛腐蚀和防护具有重要意义。采用动电位极化、电化学阻抗和Mott-Schottky分析等电... 详细信息

TA2纯钛是新一代船舶海水管路材料,在海水冲刷下管路钝化膜失效会导致管路耐久性下降。研究海水冲刷对不同表面处理TA2纯钛腐蚀行为的影响对于评估TA2纯钛腐蚀和防护具有重要意义。采用动电位极化、电化学阻抗和Mott-Schottky分析等电化学测试方法研究了两种表面处理TA2纯钛在流动海水中的耐冲刷腐蚀性能,并对腐蚀后的试样进行腐蚀形貌观察和腐蚀产物分析。结果表明,5 m/s以内,海水流速的变化对TA2纯钛表面钝化膜的耐蚀性影响较小。电位升高时,在流动海水中钛合金表面钝化膜出现短暂的溶解现象,但很快就会进行再钝化修复,对材料的耐蚀性并未产生明显影响。相比于表面钝化处理试样,抛光状态试样在流动海水冲刷下阴极极化存在极限扩散特征,这主要是由于钝化状态试样表面已经形成了钝化膜,其对氧的消耗少于尚未形成钝化膜的表面抛光试样。抛光试样由氧传质速度控制的去极化发展慢,出现不随电位变化的极限电流密度。两种表面处理后的TA2纯钛钝化膜在海水中均只呈现n型半导体特征,且极化测试后材料表面平整,未出现明显局部腐蚀。

关键词： TA2纯钛海水管路冲刷腐蚀电化学钝化膜

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Corrosion Mechanism of 5083 Aluminum Alloy in Seawater Containing Phosphate

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Journal of Ocean University of China 2021年第2期20卷 372-382页

作者： WANG Jiaming YANG Haodong DU Min HOU Jian PENG Wenshan lin cunguo The Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research Institute(LSMRI)Qingdao 266237China

As a material with good corrosion resistance,5083 aluminum alloy has a great application prospect in marine *** this work,the corrosion characteristics of 5083 aluminum alloy in seawater containing phosphate were investigated with Potentiodynamic Polarization,Electrochemical Impedance Spectroscopy (EIS),Scanning Electron Microscope (SEM),Energy Dispersive Spectroscopy Analysis (EDSA),X-ray Photoelectron Spectroscopy (XPS) and Laser Confocal *** results indicated that the effects of phosphate in seawater were ***,phosphate slightly accelerated the corrosion of 5083 in seawater in the early stage of ***_4~(2-)competed with OH~-in the adsorption process on the alloy surface,which weakened the contact between OH~-and Al~(3+)near the interface of the alloy,and inhibited the formation as well as the self-repair of the passive film,thus accelerating the activation dissolution *** with the natural seawater,the charge transfer resistance of 5083 in the seawater containing phosphate decreased faster during the early stage of corrosion,and the corrosion current density i_(corr) was higher in seawater containing *** the other hand,the addition of phosphate would not affect the cluster distribution of the second phase of 5083 in seawater,but it changed the composition of the corrosion product layer and had an obvious inhibitory effect on the local corrosion of 5083 in *** 16-day exposure,shallower and more sparsely distributed pits could be observed on the derusted surface of 5083 in the seawater containing phosphate,and the pitting coefficient in the seawater containing phosphate was significantly lower than that in natural *** reduction of pitting tendency could be realized mainly through two ***,the HPO_4~(2-)adsorbed on the surface of the passive film in the early stage of corrosion and repeled the corrosive anions such as Cl~-.Second,phosphate participated in the construction of th

关键词： 5083 aluminum alloy seawater containing phosphate pitting corrosion passive film Cl~-

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基于底栖型微生物燃料电池的水下供电系统构建与产能评价

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装备环境工程 2024年第8期21卷 153-162页

作者：刘康楠邱峥辉蔺存国张广龙郑纪勇高海平洛阳船舶材料研究所海洋腐蚀与防护全国重点实验室山东青岛266237

目的改善目前水下生物供电系统能量收集效率低、供电能力弱的问题,方法构建基于碳毡阵列阳极的水下生物电池单元,以及具有2级电荷泵复合升压结构的电源管理单元。将2个子单元耦合,构建水下生物供电系统样机,并对其供电能力进行评价。结... 详细信息

目的改善目前水下生物供电系统能量收集效率低、供电能力弱的问题,方法构建基于碳毡阵列阳极的水下生物电池单元,以及具有2级电荷泵复合升压结构的电源管理单元。将2个子单元耦合,构建水下生物供电系统样机,并对其供电能力进行评价。结果测试结果表明,电源管理单元能够将生物电池13~18 mW的持续输入能量有效收集至储存介质中,能量收集效率达到60.65%。生物电池单元产生的能量在满足温度/pH传感器以及水下通讯机工作的同时,每天仍能够产生385.68 J的净能量收益。结论构建的水下生物供电系统能够实现水下生物电能的高效收集与存储,可为海洋环境信息采集与传输系统提供长期、稳定的原位能源供应。

关键词：生物电能碳毡阳极底栖微生物燃料电池电源管理系统能量转化效率水下原位供电

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聚合物防污材料表面水化层的分子动力学模拟

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化学学报 2013年第4期71卷 649-656页

作者：张恒王华蔺存国王利苑世领山东大学化学与化工学院济南250100 海洋腐蚀与防护国家级重点实验室中国船舶重工集团公司第七二五研究所青岛266101

采用分子动力学方法研究了吸附在聚二甲基硅氧烷(PDMS)和接枝聚磺酸基甜菜碱甲基丙烯酸甲酯(pSBMA)改性后的防污材料膜水化层内的水分子的结构及其动力学性质,从微观角度解释了聚合物膜具有防污性能的原因.模拟发现:(1)紧靠聚合物膜形... 详细信息

采用分子动力学方法研究了吸附在聚二甲基硅氧烷(PDMS)和接枝聚磺酸基甜菜碱甲基丙烯酸甲酯(pSBMA)改性后的防污材料膜水化层内的水分子的结构及其动力学性质,从微观角度解释了聚合物膜具有防污性能的原因.模拟发现:(1)紧靠聚合物膜形成的水化层是聚合物具有防污性能的关键因素,该水化层是溶液中的粒子(包括蛋白质分子)与聚合物膜相接触时所要克服的最主要的物理能障;(2)相对PDMS聚合物膜而言,双离子特性自组装膜(pSBMA)在氢键、静电力的共同作用下,可以形成空间笼状水分子网结构对水分子具有更强的束缚作用并有效降低水分子的可运动性,形成的稳定水化层使得pSBMA具有更强的阻碍蛋白质吸附的能力.

关键词：聚二甲基硅氧烷聚磺酸基甜菜碱甲基丙烯酸甲酯生物污损防污材料分子动力学

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远青弧菌、硫酸盐还原菌及其混合菌种作用下B10合金的海水腐蚀行为

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金属学报 2014年第12期50卷 1461-1470页

作者：魏仁超许凤玲蔺存国唐晓李焰中国石油大学(华东)化学工程学院青岛266580 中国船舶重工集团公司第725研究所海洋腐蚀与防护国家级重点实验室青岛266071 中国石油大学(华东)机电工程学院青岛266580

采用电化学实验及SEM和EDS分析技术,研究了B10合金分别在无菌和接种了远青弧菌、硫酸盐还原菌(SRB)以及二者混合菌种的海水中的腐蚀行为.结果表明,不同海洋微生物条件下B10合金的腐蚀行为及机制有所不同.远青弧菌通过阻滞氧去极化阴极... 详细信息

采用电化学实验及SEM和EDS分析技术,研究了B10合金分别在无菌和接种了远青弧菌、硫酸盐还原菌(SRB)以及二者混合菌种的海水中的腐蚀行为.结果表明,不同海洋微生物条件下B10合金的腐蚀行为及机制有所不同.远青弧菌通过阻滞氧去极化阴极过程在一定程度上抑制B10合金腐蚀;SRB则通过氢去极化使阳极溶解加速,而生成的粗大颗粒状腐蚀产物Cu2S对基体的保护性不佳,促进了B10合金的腐蚀;而在混合菌种条件下,B10合金腐蚀的阴极过程与仅接种SRB时相似,但阳极溶解形成的腐蚀产物比后者细小且致密均匀,使其阳极极化显著增大,阻滞了试样的进一步腐蚀,其腐蚀电流密度介于2种单一菌种之间.因此在工程实践中,根据实验室单一菌种条件下材料的腐蚀行为来估计和预测在实际微生物环境中材料的腐蚀行为时宜慎重.

关键词：硫酸盐还原菌远青弧菌电化学阻抗谱 B10合金

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