Metal nanoparticles in ionic liquids: Synthesis and catalytic applications

Seitkalieva, Marina M.; Samoylenko, Dmitriy E.; Лоцман, Кристина А.; Rodygin, Konstantin S.; Ananikov, Valentine P.

doi:10.1016/j.ccr.2021.213982

Cited by 79 publications

(44 citation statements)

References 343 publications

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“…Such materials can be obtained by introducing electrically conductive components into the structure of insulators and poor electrical conductors. Among these materials are 1D carbon fibers, carbon nanotubes, nanowires [ 61 , 62 ], 2D graphene [ 63 ] 3D metal particles [ 64 , 65 ] and other materials.…”

Section: Electrothermal Composite Materials For De-icing Applicationsmentioning

confidence: 99%

A Mini-Review on Recent Developments in Anti-Icing Methods

et al. 2021

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An aggressive impact of the formed ice on the surface of man-made objects can ultimately lead to serious consequences in their work. When icing occurs, the quality and characteristics of equipment, instruments, and building structures deteriorate, which affects the durability of their use. Delays in the adoption of measures against icing endanger the safety of air travel and road traffic. Various methods have been developed to combat de-icing, such as mechanical de-icing, the use of salts, the application of a hydrophobic coating to the surfaces, ultrasonic treatment and electric heating. In this review, we summarize the recent advances in the field of anti-icing and analyze the role of various additives and their operating mechanisms.

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Section: Electrothermal Composite Materials For De-icing Applicationsmentioning

confidence: 99%

A Mini-Review on Recent Developments in Anti-Icing Methods

et al. 2021

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“…[29] Ag NPs were detected via direct faradaic electron transfer; whereby, addition of chloride ions enhanced Ag NP oxidative dissolution to Ag + . NPs are often prepared in an IL using lithium borohydride (LiBH 4 ) as a reducing agent [30,31,33] and lack capping agents which can enhance their reactivity. However, Kanoufi's group [4] showed the presence of LiBH 4 nanocrystals (NCs), which formed from residual LiBH 4 after the tetrahydrofuran (THF) molecular solvent, used to deliver the LiBH 4 , was removed under high vacuum with heating.…”

Section: Introductionmentioning

confidence: 99%

“…They are also excellent media for growing small (< 20 nm diameter) and low dispersity (< � 2-5 nm) NPs [30][31][32] and have numerous advantageous physicochemical properties, e. g., high thermal and electrical stability, that make them highly desirable, designer solvents. [30] Tanner et al's study of NP impacts employed a hydrophilic imidazolium based IL with the Ag NPs prepared and modified in an aqueous solution, then transferred to the IL phase. [29] Ag NPs were detected via direct faradaic electron transfer; whereby, addition of chloride ions enhanced Ag NP oxidative dissolution to Ag + .…”

Section: Introductionmentioning

confidence: 99%

“…ILs are molecularly large organic salts with melting points below 100 °C that can enhance catalysis. They are also excellent media for growing small (<20 nm diameter) and low dispersity (<±2–5 nm) NPs [30–32] and have numerous advantageous physicochemical properties, e. g ., high thermal and electrical stability, that make them highly desirable, designer solvents [30] . Tanner et al .’s study of NP impacts employed a hydrophilic imidazolium based IL with the Ag NPs prepared and modified in an aqueous solution, then transferred to the IL phase [29] .…”

Section: Introductionmentioning

confidence: 99%

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Single‐Entity Electrochemical Detection of As‐Prepared Metallic and Dielectric Nanoparticle Stochastic Impacts in a Phosphonium Ionic Liquid

Ahmadinasab

Stockmann

2022

ChemElectroChem

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Nanoparticles (NPs) are of considerable interest, owing to their enhanced catalytic activity and optical properties. Ionic liquids (ILs) are employed as a medium to prepare small (<20 nm in diameter) and relatively low dispersity (typically, ±1–2 nm) NPs. While ensemble techniques (e. g., UV/Vis) can provide a great deal of information, increasingly, single‐entity electrochemistry (SEE) has been used to provide physical insight into individual NP catalysis and dynamics. Herein, Pt NP impact current spikes for particles prepared in the IL phase and based on electrocatalytic amplification (ECA) of the borohydride oxidation reaction (BOR) were recorded during i‐t measurements. Additionally, direct oxidative LiBH4 nanocrystal (NC) impact signals were observed herein for the first time. By quantifying the charge transferred during the stochastic collision events, the radius of the NCs (rNC) was calculated (∼5.5 nm) and compares favorably with TEM images. Critically, small additions (1 % v/v) of a molecular, polar organic solvent (tetrahydrofuran, THF) disrupt the ILs supramolecular fluidic nature, which enhances NC impact frequency and the aggregation of Pt NPs.

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“…[1][2][3] ILs can replace standard aqueous electrolytes in applications aimed at the conversion and storage of energy, 4 such as electrochemical supercapacitors, [5][6][7][8] Graetzel solar cells, [9][10][11] and Li-ion batteries; [12][13][14] moreover, ILs can be used as lubricants in micro-electro-mechanical devices [15][16][17][18] and as synthesis media. 1,19 Due to the ILs intrinsic controlled flammability, miscibility and negligible vapor pressure, ILs are often assigned a green label. [20][21][22] In fact, ILs are not intrinsically green, although in principle they can be designed to be environmentally more sustainable.…”

Section: Introductionmentioning

confidence: 99%

Interaction of imidazolium-based ionic liquids with supported phospholipid bilayers as model biomembranes

Marfori

Asperti

Vita

et al. 2022

Preprint

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The cytotoxicity of Ionic Liquids (ILs) has been raising attention in the context of the biological and environmental impact of their vast field of applications. It is ascertained that the cell membrane is the main target of ILs when they interact with microorganisms, cells and bacteria; nevertheless, studies on the micro- and nanoscale aimed at better understanding the fundamental mechanisms of toxicity of ILs are lacking. In this work, we used atomic force microscopy (AFM) to investigate the impact of room-temperature ILs on the mechanical, morphological and electrostatic properties of solid-supported DOPC phospholipid bilayers, taken as models of biomembranes. In particular, we have characterized the concentration-dependent and time-dependent evolution of the morphological, structural and mechanical properties of DOPC lipid membranes in the presence of imidazolium-based ILs with different alkyl chain length and hydrophilic/hydrophobic character. The majority of ILs investigated were found to possess the ability of restructuring the lipid bilayer, through the formation of new ILs/lipid complexes, showing distinctive morphological features (increase of area and roughness). The nanomechanical analysis of the lipid membrane exposed to ILs revealed a progressive, concentration-dependent perturbation of the structural ordering and rigidity of the membrane, evidenced by a decrease in the breakthrough force, Young’s modulus and area stretching modulus. AFM detected a modification of the electrostatic double-layer at the membrane surface, in terms of a reduction of the original negative surface charge density, suggesting a progressive stratification of cations on the exposed leaflet of the lipid membrane. Our findings may be helpful in designing novel ILs with tailored interaction with biological membranes.

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Metal nanoparticles in ionic liquids: Synthesis and catalytic applications

Cited by 79 publications

References 343 publications

A Mini-Review on Recent Developments in Anti-Icing Methods

A Mini-Review on Recent Developments in Anti-Icing Methods

Single‐Entity Electrochemical Detection of As‐Prepared Metallic and Dielectric Nanoparticle Stochastic Impacts in a Phosphonium Ionic Liquid

Interaction of imidazolium-based ionic liquids with supported phospholipid bilayers as model biomembranes

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