Themed collection Nanoscale and Nanoscale Horizons: Nanoparticle Synthesis

We present an overview of the opportunities provided by bimetallic core–shell nanocrystals, followed by a discussion of the challenges and promising solutions regarding the elucidation of the true surface composition and its dynamics.

When plasmonic metal nanoparticles become smaller and smaller, a new class of nanomaterials—metal nanoclusters of atomic precision—comes to light, and recently shape control at the atomic level for new functionality has become an attractive topic.

Significant advances in nanoparticle-related research have been made in the past decade, and amelioration of properties is considered of utmost importance for improving nanoparticle bioavailability, specificity, and catalytic performance.

Emerging nanotechnology leads to success in synthesizing and applying nanoparticles (NPs) using the green-chemistry approach.

Oleic acid and oleylamine are added in a solution containing suitable precursors and they can often form complexes with metal ions. These complexes may be thermally decomposed to yield ligand-coated nanoparticles with a tendency to form assemblies.

Machine learning-assisted synthesis of nanoparticles.

This review mainly discusses the development of TiO₂-based materials including synthetic methods, dopants and structural modifications, and applications. A comprehensive analysis of the different aspects of TiO₂ is described.

Green synthesis approaches are gaining significance as promising routes for the sustainable preparation of nanoparticles, offering reduced toxicity towards living organisms and the environment.

We review the chemistry that leads or could lead to colloidal metal nitride nanocrystals, via solution-based methods.

Silica nanoparticles have evolved from the field of nanotechnology to different fields of science and engineering. An overview of silica nanoparticles going from definitions to properties, synthetic approaches and applications is presented.

The roles of surfactants in the morphology control of nanoparticles are reviewed, including dispersion, structure direct, cap, reduction, etch, and ion exchange. The application of surfactants in the synthesis of nanoparticles is prospected.

At low carboxylate concentrations the sulfur source is highly reactive thiourea, which gives rise to sulfur rich nanoparticles. At high carboxylate concentrations, the sulfur source is the less reactive thiocyanate, resulting in sulfur poor phases.

In this paper, we report the use of phosphinecarboxamide as a convenient, air and moisture tolerant group-V precursor for the simple synthesis of InP-based quantum dots.

Mixed ionic-electronic conducting NaSbS₂ NCs with different sizes (50 to 90 nm) and shapes (cube, quasi-spherical cuboctahedra and truncated cubes) were synthesized using a colloidal approach by systematically changing the reaction parameters.

High-entropy alloy nanoparticles (HEA NPs) can be synthesized on germanane (GeNSs), Ge nanoparticles (GeNPs) and bulk Ge.

Hybrid cellulose nanocrystal-gold nanoparticles engineered with sugar headgroups is a functional glyconanomaterial that permits a direct visualization of the sugar headgroups-lectins interactions by cryo-transmission electron microscopy.

We investigated phase transitions of Co(OH)₂ nanosheets by in situ scanning transmission electron microscopy heating experiments. The layered Co(OH)₂ transformed to Co nanoparticles via CoO phases; spinel Co₃O₄ was formed with temperature reduction.

We developed theoretical and experimental methodology to characterize the supersaturation dynamics underlying nanocrystal growth. This can be used to identify supersaturation-associated shape evolutions, and predict growth profiles, of nanocrystals.

Automatized approaches for nanoparticle synthesis and characterization represent a great asset to their applicability in the biomedical field by improving reproducibility and standardization, which will help meet the regulatory authorities' criteria.

Nanocrystal assembly represents the key step to develop next-generation optoelectronic devices with properties defined from the bottom-up. In this paper, we show that the critical Casimir effect allows direct control over superstructure morphology.

A global optimization protocol based on simulated annealing has been developed to analyze in situ growth kinetics data of colloidal nanoparticles, leading to determining the principal kinetic parameters of heterogeneous solid/liquid reactions.

The attachment of spherical FePtMn NPs was facilitated by applying magnetic fields. The ordering degree and coercivity of NPs have been improved by applying magnetic fields and doping Mn element with high susceptibility.

Bottom-up synthesis of titanosilicate nanoparticles was demonstrated with using a Ti-incorporated cubic silsesquioxane cage as a precursor. The catalytic tests suggest that well-dispersed and stabilized Ti species served as the active sites.

Classical molecular dynamics simulations can help understand the locations, binding modes and mobilities of carboxylate ligands on CdSe nanocrystals, aiding in the optimization of their overall performance and efficiency.

Here, we find that cation exchange and metal deposition outcomes are insensitive to either synthetic approach or metal mixture. However, extent and composition of the added metals varies with both metal combination and synthetic approach.

We demonstrate the design of multifunctional nanoparticles (NPs) via double layer approach. This approach is suitable for applying the synthesis of luminescent and magnetic NPs with long-term luminescence stability and paramagnetic properties.

Galvanic replacement (GR) of bimetallic nanoparticles (NPs) provides a versatile route to interesting trimetallic nanostructures, with the reaction stoichiometry governing the overall architecture of the product NPs.

Synthesis of disulfide chemistry based redox sensitive DEEU NPs without using any additional chemical crosslinker for colorectal cancer.

A range of Density Functional Theory and Tight Binding calculations are employed to investigate the pre-nucleation processes that lead to the formation of ZIF crystals, finding that amorphous clusters might play a key role.

Polymorph selectivity controlled by halide precursor.

NiS₂ nanomaterials were successfully prepared in a less-liquid reaction system based on NaCl. It has excellent electrochemical performance when used as cathode material of magnesium ion battery.

Photothermal therapy using Zein gold nanoshell as a potent therapeutic aproach in the treatment of tumors.

A unique approach based on the colloidal route allowing the synthesis of monodisperse bimetallic, trimetallic, tetrametallic and pentametallic nanoparticles with diameters around 5 nm as solid solutions.

This article reports a facile laser ablation in liquid (LAL) strategy for synthesizing gold nanoparticles (Au NPs) whose rich compressive strain can greatly promote the electrochemical CO₂ reduction performance of Au.

This contribution offers new opportunities for using porous MoS₂ particles as promising candidates for photothermal-assisted catalysis.

In this work we synthesized and investigated the properties of vacancy-ordered lead-free layered double perovskite (LDP) nanoparticles.

We synthesized a series of brain-targeting drug nanocarriers on multi-channel syringe pump-integrated microfluidic chips, and evaluated their performance in penetrating the blood–brain barrier by in vitro and in vivo experiments.

We present a hybrid composed of CeO₂ decorated Co nanoparticles supported on 3D porous carbon aerogels (Co-CeO₂/C aerogels) with superior electrocatalytic performance towards the both ORR and OER by CeCl₃/K₃Co(CN)₆-chitosan hydrogels derived method.

In galvanic replacement, it was found that the solvent polarity had a significant effect on the formed nanostructure. Hollow-tailed Au nano-mushrooms were synthesized under co-solvent conditions and used in effective cancer phototherapy.

Bulk & surface exsolution of Fe produces various nanostructures in Lanthanum Strontium Ferrite (LSF) thin films.

Manganese dioxide (MnO₂) are attractive for biomedical applications due to their biocompatibility, stimuli-responsive magnetic resonance imaging (MRI) properties and capability to modulate the hypoxic tumour microenvironment (TME).

Small iron oxide nanoparticles (IONPs) were synthesised in water via co-precipitation by quenching particle growth after the magnetic iron oxide phase formed.

We demonstrate a feasible synthesis of Fe/Fe₃C/Fe₂O₃ hollow hetero-nanoparticles in situ immobilized on highly graphitic nitrogen-doped carbon nanotubes via a hydrogel-bridged pyrolysis strategy for excellent electrocatalytic oxygen reduction.

An innovative strategy is developed to prepare porous Pd–Cu nanocrystals with engineered morphology and highly exposed three-dimensional catalytic facets, which demonstrate considerably improved activity toward formic acid oxidation.

The formation of high-index facets were realized via the electropolishing process before and after annealing at different temperatures and exhibited the suppression of H₂ evolution and C1 products during the electrochemical CO₂ reduction.

Pre-assembled peptoid tubes and sheets are used as a generalizable platform to template the assembly of controllable densities of CdSe quantum dots and clusters through a robust, covalent linkage.

Colloidal nanocrystals allow investigating sintering phenomena in supported catalysts.