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Synthesis of organic-inorganic 3D-nanocontainers for smart corrosion protection of friction stir welded AZ31B magnesium alloy-titanium dissimilar joints

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Journal of Magnesium and Alloys 2024年第9期12卷 3589-3601页

作者： Sepideh Aliasghari Teruo Hashimoto peter kelly Allan Matthews Henry Royce Institute Department of MaterialsThe University of ManchesterManchesterM139PLUK Department of Materials The University of ManchesterManchesterM139PLUK Surface Engineering Group Department of EngineeringManchester Metropolitan UniversityManchesterM15GDUK

The joining of different light metals through friction stir welding(FSW)is gaining interest as a method to decrease weight and improve fuel ***,to ensure durability,these welded metals may require surface treatments to protect against corrosion or *** study presents a novel approach for the simultaneous delivery of two distinct corrosion inhibitors to Ti-Mg dissimilar PEO treated joints on *** research focuses on the synthesis,characterization,and application of cerium@polystyrene(Ce@PS)nanocontainers,which are loaded with 8-hydroxyquinoline(8-HQ)to enhance corrosion *** synthesis involves several key steps,including the formation of a cerium-based outer layer around polystyrene nanospheres,the selective removal of the polystyrene core to create a porous structure,and the subsequent loading of the 8-HQ *** and compositional analyses,conducted using scanning transmission electron microscopy(STEM)and energy-dispersive X-ray spectroscopy(EDS),confirmed the successful incorporation of 8-HQ within the ***,Fourier-transform infrared spectroscopy(FTIR)provided detailed information about the chemical composition of the organic materials throughout the synthesis *** decomposition analysis verified the successful fabrication and stability of the dual-shell *** tests on Ti-Mg joints treated with plasma electrolytic oxidation(PEO)coatings and loaded nanocontainers demonstrated sig-nificantly improved corrosion resistance compared to untreated *** research highlights the potential of dual-shell nanocontainers,containing both organic and inorganic inhibitors,to offer prolonged corrosion protection,particularly against galvanic corrosion in dissimilar *** findings suggest that these synthesized nanocontainers hold promise for various industrial applications,particularly in the context of friction stir welded(FSW)Ti-Mg dissimilar joints,providing valuable

关键词： AZ31B Magnesium Dissimilar joint Two-shell inhibitors Smart corrosion protection

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Visible light photocatalytic bismuth oxide coatings are effective at suppressing aquatic cyanobacteria and degrading free-floating genomic DNA

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Journal of Environmental Sciences 2021年第6期33卷 128-136页

作者： James Redfern Marina Ratova Andrew PDean James Pritchett Matthieu Grao Joanna Verran peter kelly Department of Natural Sciences Faculty of Science and EngineeringManchester Metropolitan UniversityChester StreetM15GDUK Surface Engineering Group Faculty of Science and EngineeringManchester Metropolitan UniversityChester StreetM15GDUK Department of Life Sciences Faculty of Science and EngineeringManchester Metropolitan UniversityChester StreetM15GDUK

Access to safe drinking water free from microbial pollution is an issue of global concern. The use of photocatalytic thin films in water treatment has focused on titanium dioxide, which requires UV-activation, proving a potential barrier to upscaling and implementation in the real world. Visible-light-activated photocatalytic thin films, such as bismuth oxide, have recently been shown to have antimicrobial properties. However, more understanding of the photocatalytic effect on the microbial population in water is required. Glass beads coated with bismuth oxide were incubated with either Microcystis aeruginosa, Anabaena sp. or free-floating genomic DNA. The presence of bismuth oxide-coated glass beads was able to rapidly stop a population of cyanobacteria from increasing. The coated beads were also able to degrade genomic DNA. Leachate from the beads showed no increase in toxicity against human liver cells. This data demonstrates the efficacy of bismuth oxide-coated glass beads for controlling potentially dangerous cyanobacterial populations, whilst potentially reducing the amount of free-floating genomic DNA(an essential issue in the face of antimicrobial resistance) – all of which should be essential considerations in emerging water treatment technologies.

关键词： Photocatalysis Bismuth oxide Cyanobacteria Water treatment Antimicrobial

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Ultralow-voltage hydrogen production and simultaneous Rhodamine B beneficiation in neutral wastewater

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Journal of Energy Chemistry 2023年第6期81卷 574-582,I0013页

作者： Xiang Peng Song Xie Shijian Xiong Rong Li Peng Wang Xuming Zhang Zhitian Liu Liangsheng Hu Biao Gao peter kelly Paul K.Chu Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Hubei Engineering Technology Research Center of Optoelectronic and New Energy MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205HubeiChina Department of Physics Department of Materials Science and EngineeringDepartment of Biomedical EngineeringCity University of Hong KongTat Chee AvenueKowloon 999077Hong KongChina State Key Laboratory of Refractories and Metallurgy and Institute of Advanced Materials and Nanotechnology Wuhan University of Science and TechnologyWuhan 430081HubeiChina Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantou 515063GuangdongChina Surface Engineering Group Manchester Metropolitan UniversityManchester M15GDUK

Electrocatalytic water splitting for hydrogen production is hampered by the sluggish oxygen evolution reaction(OER)and large power consumption and replacing the OER with thermodynamically favourable reactions can improve the energy conversion *** iron corrodes easily and even self-corrodes to form magnetic iron oxide species and generate corrosion currents,a novel strategy to integrate the hydrogen evolution reaction(HER)with waste Fe upgrading reaction(FUR)is proposed and demonstrated for energy-efficient hydrogen production in neutral *** heterostructured MoSe_(2)/MoO_(2) grown on carbon cloth(MSM/CC)shows superior HER performance to that of commercial Pt/C at high current *** replacing conventional OER with FUR,the potential required to afford the anodic current density of 10 m A cm^(-2)decreases by 95%.The HER/FUR overall reaction shows an ultralow voltage of 0.68 V for 10 m A cm^(-2)with a power equivalent of 2.69 k Wh per m^(3)H_(2).Additionally,the Fe species formed at the anode extract the Rhodamine B(Rh B)pollutant by flocculation and also produce nanosized magnetic powder and beneficiated Rh B for value-adding *** work demonstrates both energy-saving hydrogen production and pollutant recycling without carbon emission by a single system and reveals a new direction to integrate hydrogen production with environmental recovery to achieve carbon neutrality.

关键词： Energy-saving hydrogen production Hydrogen evolution reaction Neutral water splitting MoSe_(2)/MoO_(2)heterostructure Environmental recovery

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Benefits/Effectiveness of Pulmonary Surfactant Therapy in Neonatal Respiratory Distress Syndrome: A Case Report and Literature Review

Benefits/Effectiveness of Pulmonary Surfactant Therapy in Ne...

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作者： kelly peter Msafiri 华中科技大学

学位级别：硕士

Neonatal Respiratory distress syndrome （NRDS）, is an acute lung disease of the newborncaused by surfactant deficiency. It is one of the most common causes of respiratory failures inpremature babies, especially in neonates younger than32weeks’ gestational age andweighing less than1200g. Ventilation was used to improve oxygenation and diseasedmortality of neonates with NRDS, but it may cause severe lung injury includingpneumothorax, ventilator-associated pneumonia and increase the incidence of chronic lungdisease or bronchopulmonary dysplasia, intracranial hemorrhage. Surfactant therapy becameavailable in the1980s and has significantly changed clinical practice in neonatology over thelast30years. Early postnatal Surfactant therapy has been shown to improve oxygenation,decrease air leaks, and most importantly decreases infant mortality from NRDS. The purpose of this review is to give an overview the developments in field of pulmonarysurfactant, focusing on benefits of surfactant replacement therapy in preterm NRDS, reporteda case with NRDS managed with an extract of porcine lung surfactant.

关键词：新生儿呼吸窘迫综合征表面活性剂疗法临床疗效

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中国北方偏远地区农户作物的选择(英文)

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中国科学院研究生院学报 2009年第3期26卷 338-349页

作者：崔永伟胡瑞法 kelly peter 梁洛辉中国科学院地理科学与资源研究所北京100101 中国科学院农业政策研究中心北京100101 中国科学院研究生院北京100049 加州大学伯克利分校农业与资源经济系加州94720美国联合国大学东京150-8925日本

遗传多样性保护对于全球农业发展至关重要,而有效的保护与农民对不同作物的种植选择关系密切.目前在中国北方偏远地区,农民仍以种植小杂粮为主,所采用品种多为具有广泛遗传多样性的地方品种.通过对该地区农民对不同品种小杂粮选择种植... 详细信息

遗传多样性保护对于全球农业发展至关重要,而有效的保护与农民对不同作物的种植选择关系密切.目前在中国北方偏远地区,农民仍以种植小杂粮为主,所采用品种多为具有广泛遗传多样性的地方品种.通过对该地区农民对不同品种小杂粮选择种植的调查,基于我们的作物选择模型,得出市场不完全和收入水平低是农民种植小杂粮作物的重要原因.建议政府在遗传多样性保护中发挥更重要的作用.

关键词：作物选择多样性偏远地区中国

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