Mechanical properties of nanomaterials: A review

Nanotechnology Reviews, Год журнала: 2020, Номер 9(1), С. 259 - 273

Опубликована: Янв. 1, 2020

Abstract As an emerging material, nanomaterials have attracted extensive attention due to their small size, surface effect and quantum tunneling effect, as well potential applications in traditional materials, medical devices, electronic coatings other industries. Herein, the influence of nanoparticle selection, production process, grain boundary structures on mechanical properties is introduced. The current research progress application range nano-materials are presented. unique make them superior over materials. Therefore, will a broader prospect future. Research significant for development materials science.

Язык: Английский

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Advanced Functional Materials

IntechOpen eBooks, Год журнала: 2020, Номер unknown

Опубликована: Май 4, 2020

This book was written by authors in the field of preparation advanced functional materials and their wide-ranging applications. The topics include: several materials, applications sensors, health, concrete, textile, glasses, pharmacy. In this book, focused on recent studies, applications, new technological developments fundamental properties materials.

Язык: Английский

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Magnetically Recoverable Catalysts: Catalysis in Synthesis of Polyhydroquinolines

Applied Organometallic Chemistry, Год журнала: 2019, Номер 34(3)

Опубликована: Дек. 25, 2019

Molecules that contain polyhydroquinoline structural scaffolds are N‐containing heterocycles which of great interest to organic chemists and biologists. Polyhydroquinoline known as calcium channel blockers have emerged one the most important class drugs used for treatment cardiovascular Alzheimer's diseases. Besides, recovery reusability catalysts issues be discussed in modern catalysis research especially synthesis. The concept magnetically recoverable has been rapidly developed recent times. Magnetic separation is an efficient strategy rapid from reaction medium. Also, alternative time‐, solvent‐, energy‐consuming techniques. In this review, we focused on fabrication, surface‐modification characterization nanomagnetic materials their application, catalysts, synthesis scaffolds.

Язык: Английский

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The effect of nano-SiO2 on concrete properties: a review

Nanotechnology Reviews, Год журнала: 2019, Номер 8(1), С. 562 - 572

Опубликована: Дек. 31, 2019

Abstract In recent years, the addition of nanometer materials to concrete has attracted a group increasing number scholars’ research interests, and nano-SiO 2 is one hotspots. this paper, we briefly introduce influence on setting time, slump, shrinkage, durability mechanical properties concrete. addition, review also includes microstructure measured by scanning electron microscope (SEM) content various hydration products obtained X-ray diffraction (XRD). The result shows that time shortened, slump reduced shrinkage improved owing high activity nucleation . improvement effect remarkable, especially in aspect enhancing It should be noted limited end, literature summary explains macro performance nano-silica modified through microstructure.

Язык: Английский

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Encapsulation methods for phase change materials – A critical review

International Journal of Heat and Mass Transfer, Год журнала: 2022, Номер 200, С. 123458 - 123458

Опубликована: Окт. 26, 2022

Currently, non-renewable resources are heavily consumed, leading to increased global warming resulting from the production of carbon dioxide etc., phase change materials (PCMs) regarded as a solution mitigate these crises attributed their promising thermal energy storage capability. In this critical review, properties different encapsulation methods PCMs summarised and compared. Encapsulation ensures that used safely efficiently, therefore method needs be thoroughly investigated improved before practical implementation. The applicable for techniques such particle diameter, enthalpy, efficiency cycling times reviewed. Future researchers advised measure report conductivities, displaying them in convenient manner; many studies ignore parameter, hindering research progression. Evaluation criteria mechanical should developed enable comparisons between studies. It is suggested eutectic metallic PCMs, sol-gel methods, complex coacervation spray drying areas can further better microcapsule performance, higher yield, synthesis conditions. future, bifunctional microcapsules, copolymer encapsulation, doped high-performance highly developments when compared with current monofunctional capsules pure polymer shells.

Язык: Английский

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Tuning the Magnetic Behavior of Zinc Ferrite via Cobalt Substitution: A Structural Analysis

ACS Omega, Год журнала: 2024, Номер 9(2), С. 2536 - 2546

Опубликована: Янв. 2, 2024

Cobalt-doped zinc ferrite is a contemporary material with significant structural and magnetic characteristics. Our study explores the properties of cobalt-substituted (ZnxCo1–xFe2O4), synthesized via simple sol–gel method. By varying cobalt ratio from 0 to 0.5, we found that substitution impacts both magnetization lattice parameters. FTIR analysis suggested presence functional groups, particularly depicting an M–O stretching band, within octahedral tetrahedral clusters. X-ray diffraction confirmed phase purity cubic structure. The materials exhibited average particle size 24–75 nm. Scanning electron microscopy revealed morphological properties, confirming formation truncated particles. In order determine stability, mass loss (%), thermal behavior, (thermogravimetric (TGA)/differential (DTA)) was performed. ferrites were vibrating sample magnetometer (VSM). Finally, highest saturated lowest coercivity values observed higher concentrations dopant substituting zinc. nanomaterials have good stability as compared other such can be used for in near future.

Язык: Английский

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Development of ultra-lightweight foamed concrete modified with silicon dioxide (SiO2) nanoparticles: Appraisal of transport, mechanical, thermal, and microstructural properties

Journal of Materials Research and Technology, Год журнала: 2024, Номер 30, С. 3308 - 3327

Опубликована: Фев. 6, 2024

Язык: Английский

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Magnetically recoverable catalysts for efficient multicomponent synthesis of organosulfur compounds

RSC Advances, Год журнала: 2025, Номер 15(5), С. 3928 - 3953

Опубликована: Янв. 1, 2025

This review studies magnetically recoverable catalysts designed for the efficient multicomponent synthesis of organosulfur compounds. These enhance process by combining efficiency with environmental sustainability.

Язык: Английский

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Synthesis and characterization of spinel FeAl2O4 (hercynite) magnetic nanoparticles and their application in multicomponent reactions

Research on Chemical Intermediates, Год журнала: 2019, Номер 45(11), С. 5705 - 5723

Опубликована: Июль 22, 2019

Язык: Английский

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A review on the properties, reinforcing effects, and commercialization of nanomaterials for cement-based materials

Nanotechnology Reviews, Год журнала: 2020, Номер 9(1), С. 303 - 322

Опубликована: Янв. 1, 2020

Abstract The behavior of cement-based materials is manipulated by chemical and physical processes at the nanolevel. Therefore, application nanomaterials in civil engineering to develop nano-modified a promising research. In recent decades, large number researchers have tried improve properties employing various characterize mechanism nano-strengthening. this study, state art progress systematically reviewed summarized. First, study reviews basic dispersion methods commonly used materials, including carbon nanotubes, nanofibers, graphene, graphene oxide, nano-silica, nano-calcium carbonate, silicate hydrate, etc. Then research on nano-engineered cementitious composites from view accelerating cement hydration, reinforcing mechanical properties, improving durability. addition, market applications for are briefly discussed, cost creatively summarized through survey. Finally, also summarizes existing problems current provides future perspectives accordingly.

Язык: Английский

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