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Journal of Energy Chemistry 2021年第5期30卷 383-390页

作者： muhammad rashad muhammad Asif School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina Bernal Institute Department of Chemical SciencesUniversity of LimerickLimerick V94 T9PXIreland

Magnesium-lithium hybrid ion batteries have emerged as a new class of energy storage systems owing to dendrite free cycling of magnesium anode and possibility of practice of numerous conventional lithium *** present work,we used hybrid ion strategy to analyze the performance of lithium titanate based lithium cathode,magnesium metal anode,and all-phenyl complex(APC)electrolytes at different temperatures(25℃,10℃,0℃,-10℃,and-20℃).The hybrid ion battery exhibited excellent rate performance(228 m Ah g^(-1)/20 m A g^(-1) and 163 mAh g^(-1)/1000 mA g^(-1))with stable voltage plateaus at 0.90 and 0.75 V,which corresponds to specific energy of 178 Wh kg^(-1) at room temperature(25℃).Experimental results revealed that APC-THF solutions have strong potential to suppress the freezing of electrolyte solutions owing to low boiling point of *** low temperature electrochemical testing revealed the reversible capacities of 213.4,165.5,143.8,133.2 and 78.56 mAh g^(-1) at 25,10,0,-10,and-20℃,***,ex-situ XRD,SEM,and EIS tests were carried out to understand the reaction kinetics of both Mg2+and Li+ions inside the lithium titanate *** hope this work will shed light on low temperature prospective of electrochemical devices for use in cold environments.

关键词： Mg ion battery Mg-Li hybrid ion batteries Electrochemical properties Low temperature Energy storage

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Enhanced ductility of Mg–3Al–1Zn alloy reinforced with short length multiwalled carbon nanotubes using a powder metallurgy method

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Progress in Natural Science:Materials International 2015年第4期25卷 276-281页

作者： muhammad rashad Fusheng Pan muhammad Asif Li Li College of Materials Science and Engineering Chongqing University National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing Academy of Science and Technology School of Materials Science and Engineering Dalian University of Technology

Mg–3Al–1Zn–CNTs composites, with different weight fractions(0.25–1.0 wt%) of carbon nanotubes(CNTs) were successfully fabricated via a powder metallurgy method. The processing parameters were adopted in such a way to have uniform dispersion of short length CNTs without any damage, as well as re fi ned and dissolved β phases structures throughout the composite matrix. The composite exhibited impressive increase in microhardness(about+23%) and tensile failure strain value(about+98%) without signi fi cant compromise in tensile strength, compared to the un-reinforced Mg–3Al–1Zn alloy. The synthesized composites can be used in automotive and aerospace industries due to their low density and high speci fic strength.

关键词： Metal matrix composites Mechanical properties Powder processing

Investigation on microstructural, mechanical and electrochemical properties of aluminum composites reinforced with graphene nanoplatelets

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Progress in Natural Science:Materials International 2015年第5期25卷 460-470页

作者： muhammad rashad Fusheng Pan Zhengwen Yu muhammad Asif Han Lin Rongjian Pan College of Materials Science and Engineering Chongqing University National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing Academy of Science and Technology School of Materials Science and Engineering Dalian University of Technology

In present study,the microstructure,mechanical and electrochemical properties of aluminum-graphene nanoplatelets(GNPs) composites were investigated before and after *** contents of graphene nanoplatelets(GNPs) were varied from 0.25 to 1.0 wt.%in aluminum *** composites were fabricated thorough powder metallurgy method,and the experimental results revealed that Al-0.25%GNPs composite showed better mechanical properties compared with pure Al,Al-0.50%GNPs and Al-0.1.0%GNPs *** extrusion,the Al-0.25%GNPs composite showed13.5%improvement in ultimate tensile strength(UTS) and50%enhancement in failure strain over monolithic *** the other hand,Al-0.50%GNPs and Al-0.1.0%GNPs composites showed the tensile strength lower than monolithic *** significant change was observed in 0.2%yield strength(YS) of the ***,the extruded materials showed different ***0.2%YS of composites increased with increase in GNPs filler weight ***,UTS of composites with 0.25 and 0.50%GNPs was lower than monolithic *** failure strain of the baseline matrix was enhanced by46%with 0.25%graphene *** superior mechanical properties(in terms of failure strain) of the Al-0.25%GNPs composite maybe attributed to 2-D structure,high surface area and curled nature of *** addition,the corrosion resistance of pure Al and its composites reinforced with 0.5 and 1.0 wt%GNPs was also *** was found that the corrosion rate increased considerably by the presence of GNPs.

关键词： Aluminum–graphene composites Powder metallurgy Corrosion Tensile property

Effect of Graphene Nanoplatelets addition on mechanical properties of pure aluminum using a semi-powder method

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Progress in Natural Science:Materials International 2014年第2期24卷 101-108页

作者： muhammad rashad Fusheng Pan Aitao Tang muhammad Asif College of Materials Science and Engineering Chongqing University National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing Academy of Science and Technology School of Materials Science and Engineering Dalian University of Technology

In recent years, graphene has attracted considerable research interest in all fields of science due to its unique properties. Its excellent mechanical properties lead it to be used in nano-composites for strength enhancement. This paper reports an Aluminum–Graphene Nanoplatelets(Al/GNPs)composite using a semi-powder method followed by hot extrusion. The effect of GNP nano-particle integration on tensile, compressive and hardness response of Al is investigated in this paper. It is demonstrated that 0.3 wt% Graphene Nanoplatelets distributed homogeneously in the matrix aluminum act as an effective reinforcing filler to prevent deformation. Compared to monolithic aluminum(in tension), Al–0.3 wt% GNPs composite exhibited higher 0.2% yield strength(+14.7%), ultimate tensile strength(+11.1%) and lower failure strain( -40.6%). Surprisingly, compared to monolithic Al(in compression), Al–0.3 wt% GNPs composite exhibited same 0.2% compressive yield strength and lower ultimate compression strength(- 7.8%),and lower failure strain(- 20.2%). The Al–0.3 wt% GNPs composite exhibited higher Vickers hardness compared to monolithic aluminum(+11.8%).Scanning electron microscopy(SEM), Energy-Dispersive X-ray Spectroscopy(EDS) and X-ray diffraction(XRD) were used to investigate the surface morphology, elemental percentage composition, and phase analysis, respectively.

关键词： Powder metallurgy method Mechanical properties Aluminum matrix Graphene nanoplatelets

Corrosion behavior of magnesium-graphene composites in sodium chloride solutions

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Journal of Magnesium and Alloys 2017年第3期5卷 271-276页

作者： muhammad rashad Fusheng Pan muhammad Asif Xianhua Chen College of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China Chongqing Academy of Science and Technology Chongqing 401123China School of Materials Science and Engineering Dalian University of TechnologyDalian 116024China

Coating of graphene and graphene/polymer composites on metals improves the corrosion resistance of metal *** other hand,graphene embedded inside metal(especially Mg)matrices increases or decreases corrosion,is a crucial factor and must be *** present study,electrochemical behaviors of magnesium alloys(AZ31 and AZ61)and their composites reinforced with graphene nanoplatelets(GNPs)were carried out in 3.5%NaCl solution by polarization *** surface morphology of composites before and after corrosion tests were analyzed using scanning electron *** results revealed that presence of graphene nanoplatelets in different matrices decrease corrosion resistance of *** may be attributed to presence of graphene nanoplatelets which activates the corrosion of magnesium/alloys due to the occurrence of galvanic corrosion and this effect increases with increasing graphene nanoplatelets ***,an appropriate model describing the corrosion mechanism was proposed.

关键词： Metal matrix composites Electro-chemical properties Corrosion

Numerical Simulation for Bioconvection of Unsteady Stagnation Point Flow of Oldroyd-B Nanofluid with Activation Energy and Temperature-Based Thermal Conductivity Past a Stretching Disk

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Computer Modeling in Engineering & Sciences 2022年第1期130卷 233-254页

作者： muhammad Sami rashad Haihu Liu Shan Ali Khan School of Energy and Power Engineering Xi’an Jiaotong UniversityXi’an710049China Department of Mathematics Government College University FaisalabadLayyah Campus31200Pakistan

A mathematical modeling is explored to scrutinize the unsteady stagnation point flow of Oldroyd-B nanofluid under the thermal conductivity and solutal diffusivity with bioconvection *** of Joule heating and Arrhenius activation energy including convective boundary conditions are studied,and the specified surface temperature and constant temperature of wall(CTW)are *** consequences of thermal conductivity and diffusivity are also taken into *** flow is generated through stretchable disk geometry,and the behavior of non-linear thermal radiation is incorporated in energy *** partial differential equations governing the fluid flow in the structure is reduced into dimensionless nonlinear ODEs by applying suitable similarity *** obtained system of non-dimensional nonlinear ODEs is treated numerically with the help of bvp4c solver in Matlab under shooting *** impact of various prominent parameters on velocity profile,thermal profile,volumetric nanoparticle concentration and microorganism distribution is depicted in graphical *** numerical outcomes for skin friction coefficient,heat transfer rate,Sherwood number as well as microorganism density number versus various parameters are listed in the *** results show that fluid velocity is reduced by increasing buoyancy ratio parameter,while the fluid flow increases with mixed convective *** temperature profile is enhanced with the amount of nonlinear thermal radiation and temperature dependent thermal ***,concentration profiles of nanoparticles have opposite behavior for Brownian motion coefficient and thermophoresis diffusion parameter,and it is noticed that by varying Peclet number the microorganisms profile is *** proposed study is useful to control and optimize heat transfer in industrial applications.

关键词： Oldroyd-B nanofluid thermal conductivity solutal diffusivity conductivity bioconvective microorganisms shooting algorithm

The outcomes of pars plana vitrectomy without endotamponade for tractional retinal detachment secondary to proliferative diabetic retinopathy

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International Journal of Ophthalmology(English edition) 2013年第5期6卷 671-674页

作者： Rao muhammad rashad Qamar muhammad Imran Saleem muhammad Farhan Saleem Department of Ophthalmology Eye Unit-IB.V.Hospital

AIM:To evaluate the outcomes of pars plana vitrectomy(PPV) without the use of an ocular tamponade in patients having tractional retinal detachment(TRD) secondary to proliferative diabetic retinopathy(PDR).METHODS:It was an interventional study conducted at the Department of Ophthalmology,***,Bahawalpur,Pakistan,from July 2011 to July 2012.A total of 75 patients(84 eyes) having TRD secondary to PDR were treated by PPV without using an ocular *** patients included in the study had a tractional retinal detachement secondary to proliferative diabetic retinopathy but didn’t have or develop retinal breaks before or during the study *** surgical procedure included a PPV combined with the removal of the tractional retinal membranes and the application of endolaser photocoagulation to the *** mean follow-up period was 12 months. RESULTS:Successful retinal reattachement was observed in 78 of the operated eyes(92.8%).In these patients,the retina remained attached till the end of the one year follow-up *** in best corrected visual acuity(BCVA) was seen in 63 eyes(75%).The visual acuity remained unchanged in 9 eyes(10.7%).Mean improvement in BCVA was 2.00 +1.24 at baseline to 1.24+1.22(P<0.05) at the end of the followup ***:In the absence of the retinal breaks,a TRD secondary to PDR can be successfully treated by pars plana vitrectomy without the use of an ocular tamponade.

关键词： endotamponade pars plana vitrectomy proliferative diabetic retinopathy tractional retinal detachment

Quest for carbon and vanadium oxide based rechargeable magnesium-ion batteries

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Journal of Magnesium and Alloys 2020年第2期8卷 364-373页

作者： muhammad rashad muhammad Asif Iftikhar Ahmed Zhen He Li Yin Zhou Xiao Wei Yuxin Wang School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang212003 JiangsuChina Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing 100871China Faculty of Science Jiangsu UniversityZhenjiang212013 JiangsuChina

Rechargeable magnesium ion batteries are potential candidates to replace the lithium ion batteries due to their high volumetric energy density,dendrite free cycling,and low *** present work,we have critically reviewed the recent advances made in the field of cathode materials development to achieve the high reversible capacities and working *** first part,carbon-based cathodes such as fluorinedoped graphene nanosheets and graphite fluoride(CF0.8)are discussed in terms of compatibilities of pos让ive electrode materials and electrolyte solutions for rechargeable magnesium-ion ***,the second part of this review focuses on crystal structure of vanadium oxide and its capability to accommodate the Mg^2+***,electrochemical performance of selected vanadium oxide based cathodes including VO2(B),FeVO4.0.9H2(X Mc)2.5+yVO9+δ,RFC/V2O5 and V2O5/Graphene composite,are discussed at different *** support the future research on magnesium ion batteries,particularly positive electrode material developments,several innovative research directions are proposed.

关键词： Magnesium-ion battery Energy storage Cathode materials Electrolytes Vanadium oxide Electrochemical properties

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Biological activities of gastropods secretions:snail and slug slime

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Natural Products and Bioprospecting 2023年第1期13卷 278-286页

作者： muhammad rashad Simone Sampò Amelia Cataldi Susi Zara Department of Pharmacy “G.d’Annunzio”University of Chieti-PescaraVia Dei Vestini 3166100 ChietiItaly International Institution of Heliciculture of Cherasco-Lumacheria Italiana Srl Corso Einaudi 4012062 CherascoItaly

Gastropods,a mollusk class including slugs and snails,represent an extraordinarily diverse and ecologically significant group of organisms featuring the largest class of *** can be classified as aquatic and terrestrial animals having coiled shells,although some species have reduced or absent *** unique body structure includes a muscular foot for locomotion,a visceral mass containing essential organs,and a distinct head region with sensory organs such as tentacles and *** are used to secrete a complex mixture of glycoproteins,enzymes,peptides,mucus and other bioactive compounds,namely slime,which represents a tool to allow locomotion,protection,and interaction within different *** biological activities of the slime have attracted considerable interest due to their diverse and potentially valuable properties ranging from defense mechanisms to potential therapeutic applications in wound healing,antimicrobial therapy,management of inflammation,and neurological *** review aims at exploring the beneficial effects of snail and slug slime focusing,in particular,on the improvement of the biological processes underlying *** exploration of the intricate components of these slimy secretions promises to discover new bioactive molecules with diverse applications in various scientific and industrial fields.

关键词： Snail slime Slug slime Biological activities Cruelty-free method Gastropods

Debating the magnesium-selenium battery technology

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Journal of Magnesium and Alloys 2020年第4期8卷 980-988页

作者： muhammad rashada Syed Danish Ali Zaidi muhammad Asif School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina Advanced Rechargeable Batteries Laboratory Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Department of Chemical Sciences School of Natural SciencesUniversity of LimerickLimerick V94 T9PXIreland

Magnesium ion batteries(MIBs)have received tremendous research attention owing to their low cost,dendrite free electroplating,and high theoretical capacities compared with lithium ion batteries(LIBs).Despite these advantages,the launching of MIBs is hindered by sluggish kinetics of the magnesium ions inside the host ***,several magnesium-selenium batteries have been developed to achieve the fast kinetics of magnesium ions inside the selenium-based ***,we have critically reviewed the five-year advancements made in the field of selenium cathode design,selenium loadings,compatible organic and inorganic electrolytes,their resultant reversible capacities,working voltages,cycle life,and specific *** selenium-based cathodes were critically debated in terms of their electrochemical performance and *** the end of this review article,several irmovative directions are proposed to shed light on future research.c 2020 Published by Elsevier *** behalf of Chongqing University.

关键词： Magnesium-selenium batteries Energy storage Selenium cathodes Electrolytes Electrochemical properties

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