Nonaqueous-solution routes to metal oxide nanoparticles are a valuable alternative the known aqueous sol-gel processes, offering advantages such as high crystallinity at low temperatures, robust synthesis parameters and ability control crystal growth without use of surfactants. In first part review we give detailed overview various solution oxides in organic solvents, with strong focus on surfactant-free processes. most these approaches, solvent plays role reactant that provides oxygen for...

A novel nonaqueous route for the preparation of nanocrystalline BaTiO(3), SrTiO(3), and (Ba,Sr)TiO(3) has been developed. In a simple one-pot reaction process, elemental alkaline earth metals are directly dissolved in benzyl alcohol at slightly elevated temperatures. After addition Ti(O(i)Pr)(4), mixture is heated to 200 degrees C, resulting formation white precipitate. XRD measurements prove exclusive presence perovskite phase without any other crystalline byproducts such as BaCO(3) or...

The reaction between titanium tetrachloride and benzyl alcohol in the presence of enediol ligands such as dopamine 4-tert-butylcatechol provides a simple nonaqueous route to situ surface functionalization titania nanoparticles. as-prepared precipitates are resoluble either water or organic solvents, depending on ligand used. chemistry 4-tert-butylcatechol-functionalized particles dissolved dimethylformamide was analyzed by 1H NMR measurements revealing adsorbed 4-tert-butylcatechol, addition...

A widely applicable solvothermal route to nanocrystalline iron, indium, gallium, and zinc oxide based on the reaction between corresponding metal acetylacetonate as precursor benzylamine solvent reactant is presented. Detailed XRD, TEM, Raman studies prove that, with exception of iron system, where a mixture two phases magnetite maghemite formed, only phase pure materials are obtained, γ-Ga2O3, zincite ZnO, cubic In2O3. The particle sizes lie in range 15−20 nm for 10−15 2.5−3.5 around 20...

Abstract We present a multigram scale, one‐step nonaqueous synthesis route to monodisperse, highly crystalline ZrO 2 nanoparticles. The nanoparticles can be stabilized in nonpolar solvents via simple functionalization procedure using only minute amounts of organic stabilizers. Their great potential materials applications is demonstrated by the fabrication organic–inorganic nanocomposites that selectively photopolymerized inscribe extremely effective and volume holographic gratings with...

Nickel-based bimetallic oxides (BMOs) have shown significant potential in battery-type electrodes for pseudo-capacitors given their ability to facilitate redox reactions. In this work, two oxides, NiMoO4 and NiWO4, were synthesized using a wet chemical route. The structure electrochemical properties of the pseudo-capacitor cathode materials characterized. showed superior charge storage performance comparison exhibiting discharge capacitance 124 77 F·g−1, respectively. NiMoO4, moreover,...

A soft-chemistry route to (impurity free) Ta2O5 and HfO2 nanopowders (see Figure) based upon a synthesis protocol that involves the reaction of metal alkoxides with benzyl alcohol is presented. The formation proceeds via an unprecedented ether-elimination process extends available non-aqueous methodologies in addition well-known ester alkyl halide eliminations.

Nonaqueous sol–gel routes to metal oxide nanoparticles have become a promising alternative aqueous methods, allowing the controlled synthesis of variety oxides as highly crystalline products at comparably low temperatures. The use solvents like benzyl alcohol that also function surface modifiers makes addition surfactants superfluous, resulting in improved product purity. In short overview such nonaqueous binary and ternary oxides, facile sodium potassium niobates well tantalate barium...

Research on the preparation of inorganic nanoparticles and nanostructures has made immense progress in past few years. The synthesis protocols developed give access to nanomaterials with a wide range compositions, monodisperse crystallite sizes, sophisticated shapes, complex assembly properties. objective this Feature Article is have closer look at organic side nanomaterials' performed nonaqueous, but liquid reaction media. Based selected literature examples, we will discuss role components...

Abstract A nonaqueous synthetic route for the preparation of a regular crystalline yttria mesostructure is presented. The reaction between yttrium alkoxides and benzyl alcohol results in formation highly ordered lamellar nanocomposite consisting layers with confined thickness about 0.6 nm, separated from each other by organic intercalated benzoate molecules. Doping europium leads to strong red luminescence. nanostructure proceeds via two reactions. CC bond occurs isopropanolate ligand. At...

The dispersion behavior of crystalline zirconia nanoparticles with a diameter 3.8 nm, synthesized from zirconium(IV) isopropoxide and benzyl alcohol in tetrahydrofurane (THF), methyl methacrylate (MMA), styrene (St), was investigated using 3-(trimethoxysilyl)propyl (MPS), ethyl 3,4-dihydroxycinnamate (EDHC), allylmalonic acid (AMA), trimethylolpropane mono allyl ether (TMPMA) as ligating stabilizers containing polymerizable vinyl groups. Analytical ultracentrifugation (AUC) transmission...

Abstract Here, the facile synthesis of fluorescent ZrO 2 :Eu 3+ nanoparticles with luminescence quantum yield up to 8.7% that can be easily dispersed in organic solvents and utilized for preparation organic/inorganic volume holographic gratings is presented. The are prepared through a one‐step solvothermal process resulting spherical particles mean size 4 nm were highly crystalline directly after synthesis, without any need calcination treatment. Detailed studies as function Eu content...

The structure and the magnetic properties of 3 5 mol% (based on starting concentrations) Co- Mn-doped ZnO nanorods, synthesized by a straightforward experimentally simple nonaqueous sol–gel route based benzyl alcohol as solvent, have been investigated various characterization techniques, including X-ray diffraction with Rietveld refinement, high-resolution transmission electron microscopy, selected area diffraction, energy dispersive spectroscopy, magnetization measurements paramagnetic...

The design of hierarchically structured nano- and microparticles different sizes, porosities, surface areas, compositions, internal structures from nanoparticle building blocks is important for new or enhanced application properties high-quality products in a variety industries. Spray-drying processes are well-suited the hierarchical multicomponent products. This structure using various nanoparticles as one most challenges future to create with optimized completely properties. Furthermore,...

Niosomes are non-ionic surfactant-based vesicles with high promise for drug delivery applications. They can be rapidly prepared via microfluidics, allowing their reproducible production without the need of a subsequent size reduction step, by controlled mixing two miscible phases an organic (lipids dissolved in alcohol) and aqueous solution microchannel. The control niosome properties implementation more complex functions, however, thus far largely unknown this method. Here we investigate...

Even though the administration of chemotherapeutic agents such as erlotinib is clinically established for treatment breast cancer, its efficiency and therapy outcome can be greatly improved using RNA interference (RNAi) mechanisms a combinational therapy. However, cellular uptake bare small interfering (siRNA) insufficient fast degradation in bloodstream leads to lacking delivery no suitable accumulation siRNA inside target tissues. To address these problems, non-ionic surfactant vesicles...

The synthesis of ZrO2 nanoparticles with controlled phase contents the monoclinic and tetragonal polymorphs is presented. By increasing reaction temperature quantity rises from 20% to almost 100%, additional dependence on liner material reactor. Additionally, it shown that by a simple post-synthetic chemical modification can be dispersed in propylene glycol monomethyl ether acetate without presence agglomerates. obtained dispersions then employed fabricate thin film based capacitors via...

Highly crystalline anatase nanoparticles of 5-20 nm in size were obtained by reacting titanium tetraisopropoxide with common ketones and aldehydes under solvothermal conditions.

The formation of iron oxide nanoparticles in a solvothermal synthesis with two different nonaqueous solvents, benzyl alcohol (BA) and triethylene glycol (TEG), was studied. Additionally, scale-up the from lab scale autoclaves (45 mL volume) to 1.5 L reactor performed. differences both reaction vessels as well for solvents were investigated regarding particle size crystallinity, magnetic properties, stability produced particles. A two-step mechanism identified, fast step distinct, slower...

Dense and hollow α-Fe₂O₃ nanofibre photoanodes core–shell-like α-Fe₂O₃/indium-tin oxide (ITO) nanocomposite were directly prepared <italic>via</italic> electrospinning.