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Advance in Antibacterial Magnesium Alloys and Surface Coatings on Magnesium Alloys:A Review

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Acta Metallurgica Sinica(English Letters) 2020年第5期33卷 615-629页

作者： Yang Shao Rong-Chang Zeng Shuo-Qi Li Lan-yue Cui yu-hong zou Shao-Kang Guan yu-Feng Zheng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China College of Chemical and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing 100871China

Magnesium(Mg)alloys as a bioabsorbable light metal have shown great clinical potential as bone replacement *** this review,the categories,progress in cutting-edge preparation technologies and antibacterial mechanisms of Mg alloys and considerable numbers of corrosion-resistant and functional coatings are *** relationship among the microstructure(grain size,intermetallic compounds),biocorrosion resistance and biocompatibility for antibacterial Mg alloys is *** challenge and outlooks of biomedical Mg alloys and coatings are proposed from an antibacterial perspective.

关键词： Magnesium alloys Antibacterial properties Coatings Degradation Biomaterial

Biocorrosion resistance and biocompatibility of Mg-AI layered double hydroxide/poly(L-lactic acid) hybrid coating on magnesium alloy AZ31

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Frontiers of Materials Science 2020年第4期14卷 426-441页

作者： Xiang SUN Qing-Song YAO yu-Chao LI Fen ZHANG Rong-Chang ZENG yu-hong zou Shuo-Qi LI Corrosion Laboratory ftor Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252059China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China College of Chemical and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China

A Mg-AI layered double hydroxide(Mg-AI-LDH)coating was firstly synthesized via an in-situ steam coating growth method on the AZ31 Mg alloy,and then was modified with poly(L-lactic acid)(PLLA)via dipping and vacuum *** microstructure and composition of LDH/PLLA hybrid coating were analyzed by XRD,SEM,EDS and *** biocorrosion behavior of hybrid coating was evaluated by potentiodynamic polarization,electrochemical impedance spectroscopy(EIS)and hydrogen evolution test in the Hank's *** results showed that LDH/PLLA coatings exhibited a much dense layer compared to the unmodified Mg-AI-LDH coating with unobvious boundary between PLLA and LDH *** corrosion current density of the LDH/PLLA-10 hybrid coating decreased three orders of magnitude in comparison to its *** was proven that the existence of the PLLA coating further prolonged the service life of the Mg-AI-LDH ***'s more,the MTT assay and livel dead staining showed that the LDH/PLL A-10 coating had good biocompatibility for Mouse NIH3T3 *** formation mechanism and the anti-corrosion mechanism of hybrid coatings were proposed.

关键词： magnesium alloy layered double hydroxide poly(L-lactic acid) corrosion resistance biocompatbility

Highly sensitive fluorescence quantification of irinotecan in biological fluids with the aid of second-order advantage

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Chinese Chemical Letters 2010年第12期21卷 1482-1486页

作者： Hai Yan Fu Hai Long Wu Jin Fang Nie Yong Jie yu hong Yan zou Ru Qin yu State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China

A rapid,green and highly sensitive excitation-emission matrix（EEM） fluorescence method was proposed for analysis of irinotecan（CPT-11） in biological fluids including human plasma and urine samples of uncalibrated interferences with the aid of second-order *** to the serious spectral overlapping from biological matrices,the parallel factor analysis（PARAFAC） and the alternating normalization-weighted error（ANWE） have been recommended to perform directly calibration and overcome the problem which makes the traditional fluorospectrophotometer in *** results can be ***, performance of the proposed method was evaluated based on figures of merit and some statistical *** accuracy of both algorithms was validated by the elliptical joint confidence region（EJCR） *** precision and repeatability were also investigated by the relative standard deviations（RSDs） of intra-day and inter-day.

关键词： Irinotecan Biological fluids Excitation-emission matrix fluorescence PARAFAC ANWE

In vitro degradation and multi-antibacterial mechanisms ofβ-cyclodextrin@curcumin embodied Mg(OH)_(2)/MAO coating on AZ31 magnesium alloy

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Journal of Materials Science & Technology 2023年第1期132卷 179-192页

作者： Kui Xue Pei-hong Tan Ze-Hui Zhao Lan-yue Cui M Bobby Kannan Shuo-Qi Li Cheng-Bao Liu yu-hong zou Fen Zhang Zhuo-yuan Chen Rong-Chang Zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Engineering The University of NewcastleCallaghanNSW 2308Australia College of Chemical and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China School of Materials Science and Energy Engineering Foshan UniversityFoshan 528000China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

It is a challenging task to prepare a coating on Mg alloys for desirable corrosion resistance,good antibac-terial ability and *** this research work,an in-situ Mg(OH)_(2)coating incorporated with sodium alginate(SA)andβ-cyclodextrin(β-CD)@curcumin(Cur)was formed on the surface of micro arc oxidation(MAO)coated AZ31 alloy via a low temperature hydrothermal *** tech-niques such as X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),Fourier transform infrared spectrometer(FT-IR)and scanning electron microscope(SEM)were employed to characterize the chemi-cal composition and surface morphology of the *** corrosion protection ability of the coatings was monitored via electrochemical polarization,hydrogen evolution and immersion *** antibacterial ability and cytocompatibility of the coatings were evaluated by plate counting method under the irradiation of 808 nm-near infrared light,in vitro cytotoxicity tests(MTT)and live/dead cell *** results indicate that a chelation of the organic molecules led to the formation of a MAO/(β-CD@Cur)-SA-Mg(OH)_(2)coating with excellent corrosion protection,multi-antibacterial ability and almost no toxic-ity to the ***,the coating provided photothermal performance through the light absorption of Cur,which was encapsulated byβ-CD to improve its *** enhanced the binding force between the drug and the *** novel coating designated the potential application on bioab-sorbable magnesium alloys.

关键词： Magnesium alloys Photothermal ability Antibacterial coating Corrosion Biomaterials

Blood compatibility of zinc-calcium phosphate conversion coating on Mg-1.33Li-O.6Ca alloy

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Frontiers of Materials Science 2016年第3期10卷 281-289页

作者： yu-hong zou Rong-Chang ZENG Qing-Zhao WANG Li-Jun LIU Qian-Qian XU Chuang WANG Zhi-Wei LIU College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 China College of Materials Science and Engineering Shandong University of Science and Technology Qingdao 266590 China Hospital of Shandong University of Science and Technology Qingdao 266590 China State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology Shandong University of Science and Technology Qingdao 266590 China

Magnesium alloys as a new class of biomaterials possess biodegradability and biocompatibility in comparison with currently used metal implants. However, their rapid corrosion rates are necessary to be manipulated by appropriate coatings. In this paper, a new attempt was used to develop a zinc-calcium phosphate （Zn-Ca-P） conversion coating on Mg-1.33Li-0.6Ca alloys to increase the biocompatibility and improve the corrosion resistance. In vitro blood biocompatibility of the alloy with and without the Zn-Ca-P coating was investigated to determine its suitability as a degradable medical biomaterial. Blood biocompatibility was assessed from the hemolysis test, the dynamic cruor time test, blood cell count and SEM observation of the platelet adhesion to membrane surface. The results showed that the Zn-Ca-P coating on Mg-1.33Li-0.6Ca alloys had good blood compatibility, which is in accordance with the requirements for medical biomaterials.

关键词： magnesium alloy lithium biomaterial biocompatibility zinc-calciumphosphate coating

Corrosion resistance of Mg-Al-LDH steam coating on AZ80 Mg alloy:Effects of citric acid pretreatment and intermetallic compounds

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Journal of Magnesium and Alloys 2023年第8期11卷 2967-2979页

作者： Jin-Meng Wang Xiang Sun Liang Song M.Bobby Kannan Fen Zhang Lan-yue Cui yu-hong zou Shuo-Qi Li Rong-Chang Zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Engineering University of NewcastleCallaghanNew South Wales 2308Australia College of Science and Engineering James Cook UniversityTownsvilleQueensland 4811Australia College of Chemical and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

In this study,the effects of intermetallic compounds(Mg_(17)Al_(12)and Al_(8)Mn_(5))on the Mg-Al layered double hydroxide(LDH)formation mechanism and corrosion behavior of an in-situ LDH/Mg(OH)_(2)steam coatings on AZ80 Mg alloy were *** acid(CA)was used to activate the alloy surface during the pretreatment *** alloy was first pretreated with CA and then subjected to a hydrothermal process using ultrapure water to produce Mg-Al-LDH/Mg(OH)_(2)steam *** effect of different time of acid pretreatment on the activation of the intermetallic compounds was *** microstructure and elemental composition of the obtained coatings were analyzed using FE-SEM,EDS,XRD and *** corrosion resistance of the coated samples was evaluated using different techniques,i.e.,potentiodynamic polarization(PDP),electrochemical impedance spectrum(EIS)and hydrogen evolution *** results indicated that the CA pretreatment significantly influenced the activity of the alloy surface by exposing the intermetallic *** surface area fraction of Mg_(17)Al_(12)and Al_(8)Mn_(5)phases on the surface of the alloy was significantly higher after the CA pretreatment,and thus promoted the growth of the subsequent Mg-Al-LDH *** CA pretreatment for 30 s resulted in a denser and thicker LDH *** in the CA pretreatment time significantly led to the improvement in corrosion resistance of the coated AZ80 *** corrosion current density of the coated alloy was lower by three orders of magnitude as compared to the uncoated alloy.

关键词： Magnesium alloy Citric acid pretreatment Steam coating Layered double hydroxide Intermetallic compounds Corrosion resistance

Metabolic derivatives of alcohol and the molecular culpritsof fibro-hepatocarcinogenesis:Allies or enemies?

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World Journal of Gastroenterology 2016年第1期22卷 50-71页

作者： Alex Boye yu-hong zou Yan Yang Department of Pharmacology and Institute of Natural Medicine Anhui Medical UniversityHefei 230032Anhui ProvinceChina Department of Medical Laboratory Science College of Allied Health SciencesUniversity of Cape CoastCape Coast 25064Ghana Department of Biology School of ScienceCenter for Regenerative Biology and MedicineIndiana University-Purdue University IndianapolisIndianapolisIN 46202United States

Chronic intake of alcohol undoubtedly overwhelms the structural and functional capacity of the liver by initiating complex pathological events characterized by steatosis,steatohepatitis,hepatic fibrosis and ***,these initial pathological events are sustained and ushered into a more complex and progressive liver disease,increasing the risk of *** coordinated pathological events mainly result from buildup of toxic metabolic derivatives of alcohol including but not limited to acetaldehyde(AA),malondialdehyde(MDA),CYP2E1-generated reactive oxygen species,alcohol-induced gut-derived lipopolysaccharide,AA/MDA protein and DNA *** metabolic derivatives of alcohol together with other comorbidity factors,including hepatitis B and C viral infections,dysregulated iron metabolism,abuse of antibiotics,schistosomiasis,toxic drug metabolites,autoimmune disease and other non-specific factors,have been shown to underlie liver *** view of the multiple etiology of liver diseases,attempts to delineate the mechanism by which each etiological factor causes liver disease has always proved cumbersome if not *** the case of alcoholic liver disease(ALD),it is even more cumbersome and complicated as a result of the many toxic metabolic derivatives of alcohol with their varying liver-specific *** spite of all these hurdles,researchers and experts in hepatology have strived to expand knowledge and scientific discourse,particularly on ALD and its associated complications through the medium of scientific research,reviews and ***,the molecularmechanisms underpinning ALD,particularly those underlying toxic effects of metabolic derivatives of alcohol on parenchymal and non-parenchymal hepatic cells leading to increased risk of alcohol-induced fibrohepatocarcinogenesis,are still incompletely *** this review,we examined published scientific findings on how alcohol and its metabolic derivati

关键词： Alcoholic hepatitis Lipopolysaccharide Fibro-hepatocarcinogenesis Mitogen activated proteinkinase Transforming growth factor beta Small motheragainst decapentaplegic

Corrosion resistance of a novel SnO2-doped dicalcium phosphate coating on AZ31 magnesium alloy

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Bioactive Materials 2018年第3期3卷 245-249页

作者： Lan-yue Cui Guang-Bin Wei Rong-Chang Zeng Shuo-Qi Li yu-hong zou En-Hou Han College of Materials Science and Engineering Shandong University of Science and TechnologyQingdao266590China College of Chemical and Environmental Engineering Shandong University of Science and TechnologyQingdao266590China National Engineering Centre for Corrosion Control Institute of Metals ResearchChinese Academy of SciencesShenyang110016China

A SnO2-doped dicalcium phosphate coating was prepared on AZ31 alloy by means of hydrothermal *** results showed that the coating possessed a globular morphology with a long lamellar crystalline structure and a thickness of approximately 40 *** surface of the coating became smooth with an increase additive amount of the SnO2 *** corrosion current density and hydrogen evolution rate of the coating prepared in presence of SnO2 were reduced compared to the coating without SnO2 and the bare AZ31 substrate,indicating an improvement in the corrosion resistance of the SnO2-doped coating.

关键词： Phosphate coating Biomaterials Magnesium alloys Corrosion Stannic oxide

In vitro corrosion of magnesium alloy AZ31-a synergetic influence of glucose and Tris

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Frontiers of Materials Science 2018年第2期12卷 184-197页

作者： Ling-yu LI Bin LIU Rong-Chang ZENG Shuo-Qi LI Fen ZHANG yu-hong zou hongwei (George) JIANG Xiao-Bo CHEN Shao-Kang GUAN Qing-yun LIU School of Materials Science and Engineering Shandong University of Science and Technology Qingdao 266510 China School of Engineering RMIT University Carlton 3053 Australia College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 China School of Materials Science and Engineering Zhengzhou-University Zhengzhou 45(3(~02 China

Biodegradable Mg alloys have generated great interest for biomedical applications. Accurate predictions of in vivo degradation of Mg alloys through costeffective in vitro evaluations require the latter to be conducted in an environment close to that of physiological scenarios. However, the roles of glucose and buffering agents in regulating the in vitro degradation performance of Mg alloys has not been elucidated. Herein, degradation behavior of AZ31 alloy is investigated by hydrogen evolution measurements, pH monitoring and electrochemical tests. Results indicate that glucose plays a content-dependent role in degradation of AZ31 alloy in buffer-free saline solution. The presence of a low concentration of glucose, i.e. 1.0 g/L, decreases the corrosion rate of Mg alloy AZ31, whereas the presence of 2.0 and 3.0 glL glucose accelerates the corrosion rate during long term immersion in saline solution. In terms of Tris-buffered saline solution, the addition of glucose increases pH value and promotes pitting corrosion or general corrosion of AZ31 alloy. This study provides a novel perspective to understand the bio-corrosion of Mg alloys in buffering agents and glucose containing solutions.

关键词： magnesium alloys corrosion glucose Tris biomaterials