scholarly journals Electrochemical Synthesis of Unique Nanomaterials in Ionic Liquids

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3270
Author(s):  
Olga Lebedeva ◽  
Dmitry Kultin ◽  
Leonid Kustov
Keyword(s):  
Ionic Liquids ◽  
Electrochemical Synthesis ◽  
Potential Application ◽  
Metallic Nanoparticles ◽  
Carbon Nanomaterials ◽  
Experimental Part ◽  
Surface Nanostructures ◽  
Silicon And Germanium ◽  
Synthesis Of Nanomaterials ◽  
Synthesis Of Nanostructures

The review considers the features of the processes of the electrochemical synthesis of nanostructures in ionic liquids (ILs), including the production of carbon nanomaterials, silicon and germanium nanoparticles, metallic nanoparticles, nanomaterials and surface nanostructures based on oxides. In addition, the analysis of works on the synthesis of nanoscale polymer films of conductive polymers prepared using ionic liquids by electrochemical methods is given. The purpose of the review is to dwell upon an aspect of the applicability of ILs that is usually not fully reflected in modern literature, the synthesis of nanostructures (including unique ones that cannot be obtained in other electrolytes). The current underestimation of ILs as an electrochemical medium for the synthesis of nanomaterials may limit our understanding and the scope of their potential application. Another purpose of our review is to expand their possible application and to show the relative simplicity of the experimental part of the work.

Novel Chemical Route to Size-Controlled Ta(0) and Ru-Ta Nanoparticles in Ionic Liquids

2012 ◽  
Vol 1473 ◽  
Author(s):  
Inga S. Helgadottir ◽  
Philippe P. Arquillière ◽  
Paul S. Campbell ◽  
Catherine C. Santini ◽  
P.-H. Haumesser
Keyword(s):  
Ionic Liquids ◽  
Melting Point ◽  
Metallic Nanoparticles ◽  
Room Temperature ◽  
Chemical Route ◽  
High Interest ◽  
Microelectronics Industry ◽  
Synthetic Routes ◽  
Size Controlled

ABSTRACTMetallic nanoparticles under 10 nm are of particular interest for the microelectronics industry. However, there is a lack of convenient synthetic routes to control their size Oxophilic metals, such as Ta, are also of high interest, however, the high oxophilicity and melting point makes the synthesis of such nanoparticles challenging. Making use of imidazolium-based ionic liquids, monodisperse zero-valent tantalum nanoparticles (Ta(0)NPs) have been successfully synthesised at room temperature by reduction of tris(neopentyl)neopentylidenetantalum(V). Furthermore; well size-controlled bimetallic Ru-Ta NPs have also been synthesized.

scholarly journals Inorganic nanomaterial lubricant additives for base fluids, to improve tribological performance: Recent developments

Friction ◽  
2021 ◽  
Author(s):  
Junhai Wang ◽  
Weipeng Zhuang ◽  
Wenfeng Liang ◽  
Tingting Yan ◽  
Ting Li ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Metallic Nanoparticles ◽  
Carbon Nanomaterials ◽  
Hexagonal Boron Nitride ◽  
Tribological Performance ◽  
Inorganic Nanoparticles ◽  
Future Research ◽  
Graphene Oxides ◽  
Practical Applications ◽  
Nano Additives

AbstractIn this paper, we review recent research developments regarding the tribological performances of a series of inorganic nano-additives in lubricating fluids. First, we examine several basic types of inorganic nanomaterials, including metallic nanoparticles, metal oxides, carbon nanomaterials, and “other” nanomaterials. More specifically, the metallic nanoparticles we examine include silver, copper, nickel, molybdenum, and tungsten nanoparticles; the metal oxides include CuO, ZnO, Fe3O4, TiO2, ZrO2, Al2O3, and several double-metal oxides; the carbon nanomaterials include fullerene, carbon quantum dots, carbon nanotubes, graphene, graphene oxides, graphite, and diamond; and the “other” nanomaterials include metal sulfides, rare-earth compounds, layered double hydroxides, clay minerals, hexagonal boron nitride, black phosphorus, and nanocomposites. Second, we summarize the lubrication mechanisms of these nano-additives and identify the factors affecting their tribological performance. Finally, we briefly discuss the challenges faced by inorganic nanoparticles in lubrication applications and discuss future research directions. This review offers new perspectives to improve our understanding of inorganic nano-additives in tribology, as well as several new approaches to expand their practical applications.

scholarly journals Carbon Nanomaterials as Versatile Platforms for Biosensing Applications

Micromachines ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 814
Author(s):  
Hye Suk Hwang ◽  
Jae Won Jeong ◽  
Yoong Ahm Kim ◽  
Mincheol Chang
Keyword(s):  
Metallic Nanoparticles ◽  
Carbon Nanomaterials ◽  
Measuring System ◽  
Mechanical And Electrical Properties ◽  
Target Analytes ◽  
Wide Range ◽  
Biological Recognition ◽  
Simple Molecules ◽  
Living Organisms ◽  
Biological Analytes

A biosensor is defined as a measuring system that includes a biological receptor unit with distinctive specificities toward target analytes. Such analytes include a wide range of biological origins such as DNAs of bacteria or viruses, or proteins generated from an immune system of infected or contaminated living organisms. They further include simple molecules such as glucose, ions, and vitamins. One of the major challenges in biosensor development is achieving efficient signal capture of biological recognition-transduction events. Carbon nanomaterials (CNs) are promising candidates to improve the sensitivity of biosensors while attaining low detection limits owing to their capability of immobilizing large quantities of bioreceptor units at a reduced volume, and they can also act as a transduction element. In addition, CNs can be adapted to functionalization and conjugation with organic compounds or metallic nanoparticles; the creation of surface functional groups offers new properties (e.g., physical, chemical, mechanical, electrical, and optical properties) to the nanomaterials. Because of these intriguing features, CNs have been extensively employed in biosensor applications. In particular, carbon nanotubes (CNTs), nanodiamonds, graphene, and fullerenes serve as scaffolds for the immobilization of biomolecules at their surface and are also used as transducers for the conversion of signals associated with the recognition of biological analytes. Herein, we provide a comprehensive review on the synthesis of CNs and their potential application to biosensors. In addition, we discuss the efforts to improve the mechanical and electrical properties of biosensors by combining different CNs.

The ILs-assisted electrochemical synthesis of TiO 2 nanotubes: The effect of ionic liquids on morphology and photoactivity

2017 ◽  
Vol 214 ◽  
pp. 100-113 ◽  
Author(s):  
P. Mazierski ◽  
J. Łuczak ◽  
W. Lisowski ◽  
M.J. Winiarski ◽  
T. Klimczuk ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Electrochemical Synthesis

scholarly journals Metal oxide and bimetallic nanoparticles in ionic liquids: synthesis and application in multiphase catalysis

2013 ◽  
Vol 2 (5) ◽  
pp. 577-595 ◽  
Author(s):  
Martin H.G. Prechtl ◽  
Paul S. Campbell
Keyword(s):  
Ionic Liquids ◽  
Metal Oxide ◽  
Metallic Nanoparticles ◽  
Bimetallic Nanoparticles ◽  
Synthetic Methods ◽  
Supramolecular Organization ◽  
Stabilizing Agents ◽  
Bimetallic Alloy ◽  
Current State

AbstractIonic liquids (ILs) are well established as solvents and stabilizing agents for the synthesis of metallic nanoparticles (NPs) in general. The physicochemical properties of ILs and the supramolecular organization in the liquid state are capable of directing the growth of transition metal NPs generated in situ and to subsequently protect and stabilize them. Until now, many different NPs have been successfully synthesized within these media; however, the synthesis of metal oxide and bimetallic alloy or core-shell NPs in ILs is still relatively rare. Herein, we summarize the current state-of-the-art of the synthetic methods for these materials and their application in the broad field of catalysis, including multiphase systems, hydrogenation, dehydrogenation, functionalization, as well as defunctionalization reactions.

scholarly journals Cellulose Beads Derived from Waste Textiles for Drug Delivery

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1621
Author(s):  
Beini Zeng ◽  
Xungai Wang ◽  
Nolene Byrne
Keyword(s):  
Drug Delivery ◽  
Ionic Liquids ◽  
Surface Area ◽  
Pore Volume ◽  
Potential Application ◽  
Drug Loading ◽  
Loading Capacity ◽  
Fibrous Morphology ◽  
Morphological Differences ◽  
The Impact

Cellulose beads were successfully prepared from waste denim using a dissolution-regeneration approach with ionic liquids as the dissolving solvent. Cellulose beads with different morphologies were achieved by altering the dissolving and coagulating solvents. The morphological differences were quantified by N2 physisorption. The impact of morphology on the cellulose beads’ potential application was investigated in the context of drug loading and release. The results show that the fibrous morphology showed a better loading capacity than the globular analogue due to its higher surface area and pore volume.

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