检索结果-南通市图书馆

A corrosion-reconstructed and stabilized economical Fe-based catalyst for oxygen evolution

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第2期16卷 2224-2229页

作者： Zhiquan Lang Guang-Ling Song Pengpeng Wu Dajiang Zheng center for Marine Materials corrosion and protection Xiamen UniversityXiamen 361005China Department of Ocean Science and engineering Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Physical Chemistry of Solid surfaces Xiamen UniversityXiamen 361005China The University of Queensland St.LuciaQLD 4072Australia

The anode activity can to a great degree limit the cathodic hydrogen evolution efficiency in an electrolyte ***,cost-efficient electrocatalysts with good water oxidation performance and stability are highly desired in widespread implementation of the hydrogen production from water *** paper proposes a facile corrosion-reconstruction strategy to transform Fe surface into a Fe-Co hydroxide layer to improve the oxygen evolution *** as-prepared catalyst was measured to have an over-potentential as low as 320 mV at 100 mA·cm^(−2),and its stability even exceeded 600 *** and Raman spectroscopy analyses indicated that the catalyst experienced chemical changes from hydroxides to oxyhydroxides and Co^(2+)to Co^(3+)during oxygen evolution reaction(OER).The corrosion-reconstruction is not only an economical method to synthesize a highly efficient,stable and durable Fe-based catalysts,it also converses the detrimental corrosion into a beneficial catalyst fabrication process.

关键词： oxygen evolution reaction electrocatalyst corrosion stability

Hypo-toxicity and prominent passivation characteristics of 316 L stainless steel fabricated by direct metal laser sintering in a simulated inflammation environment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第34期93卷 205-220页

作者： Xiaoqi Yue Lei Zhang Xiaoyan He Decheng Kong Yong Hua corrosion and protection Centre University of Science and Technology BeijingBeijing 100083China Shunde Graduate School University of Science and Technology BeijingFoshan 528399China Reliability engineering Institute National Engineering Research Center for Water Transport SafetyWuhan University of Technology.Wuhan 430063China Institute of Functional surfaces School of Mechanical Engineering.University of LeedsLeeds LS29JTUnited Kingdom

3D-printing is an emerging technology that challenged wrought counterparts by one-step manufacturing for complicated biological ***,the material properties and surface features due to manufacturing parameters play an important role on the corrosion behaviour and influence the toxicity of the material as an *** this paper,the improvement of pitting potential was observed by electrochemical experiments as the result of grain refinement of DMLS 316 L at 200 W laser *** ICP results verified the supressed release of toxic cations after the formation of the passive film with enhanced ***,the pores from DMLS 316 L have the potential to develop into pits when polarised above pitting potential,promoting the risk of using 3D-printed 316 L as implant materials.

关键词： Inflammation 3D-printing implant Passive film Hypo-toxicity porosity

Porous needle-like Fe-Ni-P doped with Ru as efficient electrocatalyst for hydrogen generation powered by sustainable energies

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第2期16卷 2428-2435页

作者： Yue Wang Zhi Chen Qichang Li Xinping Wang Weiping Xiao Yunlei Fu Guangrui Xu Bin Li Zhenjiang Li Zexing Wu Lei Wang Key Laboratory of Eco-chemical engineering International Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Science Nanjing Forestry UniversityNanjing 210037China Shandong engineering Research center for Marine Environment corrosion and Safety protection College of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Materials Science and engineering Qingdao University of Science and TechnologyQingdao 266061China

Electrocatalytic water electrolysis,involving hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),two halfreactions,is an eco-friendly approach toward hydrogen *** this work,needle-like Ru-Fe-Ni-P on NiFe foam is prepared through corrosive engineering and following a low-temperature phosphorization procedure for overall *** as-designed Ru-Fe-Ni-P exhibits a porous needle-like structure,surface,and binder-free merits,and then can expose rich active sites,favor the transportation of mass/electron,and accelerate the reaction kinetics during catalytic ***,the synthesized Ru-Fe-Ni-P owns remarkable catalytic performance for HER,with 18 and 67 mV to reach 10 mA·cm^(−2)in alkaline and neutral ***,a low cell voltage of 1.51 V is required to produce a current of 10 mA·cm^(−2)in a two electrode electrolyzer with excellent ***,sustainable energies can power the electrolyzer effectively with abundant hydrogen generation.

关键词： metal phosphide needle-like morphology hydrogen generation overall water splitting

Enhanced photoelectrochemical cathodic protection performance of MoS_(2)/TiO_(2)nanocomposites for 304 stainless steel under visible light

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第5期64卷 21-28页

作者： Xiumin Ma Zheng Ma Dongzhu Lu Quantong Jiang Leilei Li Tong Liao Baorong Hou CAS Key Laboratory of Marine Environmental corrosion and Bio-fouling Institute of OceanologyChinese Academy of ScienceQingdao266071China Institute of Marine Science and Technology Shandong UniversityQingdao266237China Open Studio for Marine corrosion and protection Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao266237China center for Ocean Mega-Science Chinese Academy of SciencesQingdao266071China

In this work,TiO_(2)nanotube arrays(NTAs)sensitized with MoS_(2)microspheres(MoS_(2)/TiO_(2)nanocomposites)were prepared on a flat Ti substrate via two-step anodization and hydrothermal method ***_(2)NTAs were composed of many orderly nanotubes,whose large specific surface area was favorable for light absorption and MoS_(2)microsphere *** MoS_(2)microsphere as a narrow band gap semiconductor extended the TiO_(2)NTAs’absorption band edge to the visible *** 2D structure of MoS_(2)microspheres and the construction of heterojunction electronic field at the interface of MoS_(2)microspheres and TiO_(2)NTAs promoted the separation of photoinduced *** MoS_(2)/TiO_(2)nanocomposites could provide higher photoelectrochemical cathodic protection for 304 stainless steel(304 SS)under visible light than pristine TiO_(2)NTAs.

关键词： Anti-corrosion TiO_(2)nanotube array MoS_(2)microspheres Photoelectrochemical cathodic protection Visible light

Mechanically durable antibacterial nanocoatings based on zwitterionic copolymers containing dopamine segments

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第30期89卷 233-241页

作者： Jingzhi Yang Hongchang Qian Junpeng Wang Pengfei Ju Yuntian Lou Guoliang Li Dawei Zhang Beijing Advanced Innovation center for Materials Genome engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Institute of Process engineering Chinese Academy of SciencesBeijing 100190China Shanghai Aerospace Equipment Manufacturer Shanghai 200245China BRI Southeast Asia Network for corrosion and protection Shunde Graduate School of University of Science and Technology BeijingFoshan 528000China

Developing an effective and durable antibacterial surface is important for surgical tools and biomedical *** this work,a zwitterionic copolymer containing catechol groups as biomimetic anchoring segments was coated onto 316 L stainless steel via ***-dispersive X-ray spectroscopy(EDS)and water contact angle(WCA)measurements indicated that the coatings made of the copolymers containing zwitterionic and dopamine segments at the molar ratios of 8:2 and 6:4 exhibited stronger stability and mechanical durability than the one at 9:1 after inducing tape-peeling and ultrasonication *** mechanically durable nanocoatings exhibited excellent antibacterial performance against Staphylococcus aureus and Escherichia coli in a period of 3 *** nanocoatings with zwitterionic and dopamine segments at the molar ratio of 8:2 were further evaluated and demonstrated durable antibacterial performance after tape-peeling and ultrasonication treatments.

关键词： Antibacterial surface Zwitterionic Polymers Coatings

Design and fabrication of bipolar plates for PEM water electrolyser

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第15期146卷 19-41页

作者： Xiejing Luo Chenhao Ren Jie Song Hong Luo Kui Xiao Dawei Zhang Junjie Hao Zhanfeng Deng Chaofang Dong Xiaogang Li Beijing Advanced Innovation center for Materials Genome engineering Key Laboratory for Corrosion and Protection(MOE)Beijing 100083China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co.Ltd.Beijing 102209China

Hydrogen energy,whether in generation plants or utilization facilities,plays a decisive role in the mission to achieve net-zero greenhouse gas emissions,all to minimize *** growing demand for clean energy carrier steadily accelerates the development of hydrogen production processes,and therein proton exchange membrane(PEM)water electrolysis is deemed a promising long-term strategy for hydrogen preparation and *** review retrospects recent developments and applications of bipolar plates(BPs)as key components in PEM fuel cells and water *** main content includes multifaceted challenges in the R&D or fabrication of BPs and potential future trends have also been *** details cover the BPs matrix(metallic materials and carbon composites)and the surface coating types(metal and compound coatings,carbon-based coatings,and polymer coatings),as well as the influence of flow field design for mass ***-term development and feasible researches of BPs are *** in the following aspects:(1)Structural and functional integration of components,such as material fabrication and flow field geometry optimization using 3D printing technology;(2)Introduction of environment-friendly renewable energy for hydrogen production;(3)Research on hydrogen energy reversible systems;(4)Composition optimization of surface coatings based on computational materials science and(5)systematic design expected to evolve into the next generation of BPs.

关键词： PEM water electrolyser Bipolar plates corrosion Coatings Interfacial contact resistance

Enhanced resistance of 2205 Cu-bearing duplex stainless steel towards microbiologically influenced corrosion by marine aerobic Pseudomonas aeruginosa biofilms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2018年第8期34卷 1325-1336页

作者： Dake Xu Enze Zhou Ying Zhao Huabing Li Zhiyong Liu Dawei Zhang Chunguang Yang Hai Lin Xiaogang Li Ke Yang School of Materials Sdence and engineering Northeastern UniversityShenyang 110819China corrosion and protection center University of Science and Technology BeijingBeijing 100083China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055China School of Metallurgy Northeastern UniversityShenyang 110819China

An antibacterial 2205-Cu duplex stainless steel （DSS） was shown to inhibit the formation and growth of corrosive marine biofilms by direct contact with copper-rich phases and the release of Cu^2＋ ions from the 2205-Cu DSS surface. In this work, the microbiologically influenced corrosion （MIC） resistance of 2205- Cu DS5 in the presence of the corrosive marine bacterium Pseudornonos aeruginosa was investigated. The addition of copper improved the mechanical properties such as the yield strength, the tensile strength and the hardness of 2205 DSS. Electrochemical test results from linear polarization resistance （LPR）, electrochemical impedance spectroscopy （EI5） and critical pitting temperature （CPT） measurements showed that 2205-Cu DSS possessed a larger polarization resistance （Rp）, charge transfer resistance （Rct） and CPT values, indicating the excellent MIC resistance of2205-Cu DSS against the corrosive P. aeruginosa biofilm. The live]dead staining results and the SEM images of biofilm confirmed the strong antibacterial ability of 2205-Cu DSS. The largest pit depth of 2205-Cu DSS was considerably smaller than that of 2205 DSS after 14d in the presence ofP. aeruginosa （2.2 μm vs 12.5 μm）. 2205-Cu DSS possessed a superior MIC resistance to regular 2205 DSS in the presence of aerobic P. aeruginosa.

关键词： Microbiologically influenced corrosion Cu-bearing duplex stainless steel Pseudomonas aeruginosa Antibacterial

Recrystallization effect on surface passivation of Hastelloy X alloy fabricated by laser powder bed fusion

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第32期163卷 245-258页

作者： Xing He Li Wang Decheng Kong Ruixue Li Wei Zhang Kunjie Dai Xiaoqing Ni Ketai He Chaofang Dong Beijing Advanced Innovation center for Materials Genome engineering Key Laboratory for Corrosion and Protection(MOE)Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Shanghai engineering Research center of 3D Printing Materials Shanghai Research Institute of MaterialsShanghai 200437China School of Mechanical engineering University of Science and Technology BeijingBeijing 100083China

Post-heat treatment is generally adopted in the additive manufacturing field due to its alleviation of high residual stress and modification of rapid-solidified multilevel heterogeneous microstructure,and the related performance of the heat-treated counterparts calls for a systemic investigation to build a criterion of the heat treatment *** this work,we focus on the heat treatment effects on the recrystallization of the Hastelloy X alloy produced by the laser powder bed fusion(LPBF)method,and the related surface passivation of the heat-treated counterparts is meticulously assessed as *** show that the multilevel heterostructure for LPBF Hastelloy X alloy consists of sub-micro dislocation cell substructures with Cr/Mo elemental segregation,fine columnar grains,and periodically-distributed molten *** heat treatment,partially and fully recrystallized structures for LPBF Hastelloy X alloys were achieved at 1100 and 1200℃for 1 h,***,the as-built LPBF Hastelloy X alloy shows superior corrosion resistance while the heat-treated one(1100℃)exhibits the worst in the borate buffer *** growth of passive film exhibited a highly linear correlation with the nucleation process controlled by diffusion,and high dislocation density and low angle grain boundary decreased the diffusion coefficient of cation vacancies,augmenting the nucleation sites of the passive film and enhancing its growth ***,the micro-galvanic effect resulting from the partially recrystallized microstructure actively facilitated the formation of inhomogeneous porous passive films,leading to the worst corrosion resistance.

关键词： Laser powder bed fusion Hastelloy X Recrystallization Heterogeneous microstructure Passive film

surface growth of novel MOFs on AZ31 Mg alloy coated via plasma electrolytic oxidation for enhanced corrosion protection and photocatalytic performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第6期12卷 2413-2432页

作者： Ananda Repycha Safira Arash Fattah-alhosseini Mosab Kaseem corrosion and Electrochemistry Laboratory Department of Nanotechnology and Advanced Materials EngineeringSejong UniversitySeoul 05006Republic of Korea Department of Materials engineering Faculty of EngineeringBu-Ali Sina UniversityHamedanIran

In the pursuit of multifunctional coatings,the controlled growth of materials on stationary platforms holds paramount importance for achieving superior corrosion protection and optimal photocatalytic *** study introduces a cutting-edge approach,intertwining bifunctional metal-organic frameworks(MOFs)seamlessly into defective MgO layers produced by the anodic oxidation of AZ31 *** metallic oxides of Zn,Sn,and V take center stage as metallic sources for MOF formation,complemented by the organic prowess of L-Tryptophan as anα-amino acid *** the electronic structure of metallic oxides reacting with tryptophan molecules,controlled morphologies with distinct characteristics are induced on the defective surface of the MgO layer,enabling the precise modulation of surface *** hybrid composite demonstrates an adaptive microstructure in diverse aqueous environments,offering dual functionality with electrochemical stability and visible light photocatalytic activity for crystal violet *** the samples,the SnOF complex exhibited remarkable electrochemical stability with a low corrosion current density of 7.50×10^(−10)A·cm^(−2),along with a 94.56%degradation efficiency after 90 min under visible light *** VOF complex,under similar visible light conditions,demonstrated exceptional performance with a higher degradation efficiency of 97.79%and excellent electrochemical stability characterized by a corrosion current density of 3.26×10^(−9)A·cm^(−2).Additionally,Density Functional Theory(DFT)computations shed light on the basic bonding patterns between MOFs and inorganic components,providing electronic understanding of their electrochemical and photocatalytic activities.

关键词： Electrochemical stability Defective layer Metal-organic framework Photocatalytic activity DFT