Materials Literature
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Supported gold nanoparticles have generated an immense interest in the field of catalysis due to their extremely high reactivity and selectivity. Recently, alloy nanoparticles of gold have received a lot of attention due to their enhanced catalytic properties. Here we report the synthesis of silica supported AuCu nano…
Well-defined nanoparticles composed of a tetraphenylmethane-based microporous polymer network with an average particle diameter of 30-60 nm were fabricated by a miniemulsion polymerization technique. Strong green emission was observed and efficient excitation energy transfer from nanoparticles to surface-bound dye mol…
Herein, we introduce a La1−xSrxCoO3 perovskite catalyst, substituting for Pt containing LNT catalysts, to remove efficiently NOx from lean-burn engines. The NOx storage/reduction occurred alternatively on the perovskite in successive lean/rich atmospheres, and the NOx conversion reached 71.4% with 100% selectivity to…
Orientation sensors require the monitoring of polarization-dependent surface plasmons of single nanoparticles. Herein, we present both the longitudinal and transverse surface plasmonic resonance from a single gold nanorod (AuNR) using conventional dark-field microscopy. The relative peak intensities of the transverse…
The size of the active phase is one of the most important factors in determining the catalytic behaviour of a heterogeneous catalyst. This Feature Article focuses on the size effects in two types of reactions, i.e., the metal nanoparticle-catalysed dehydrogenation of alcohols and the metal oxide nanocluster-catalysed…
The dithiadiazolyl radicals are a group of heterocyclic sulfur–nitrogen-containing neutral radicals. These molecules have received a great deal of attention due to their potential as building blocks for the development of molecular magnets and molecular conductors. Both magnetic and conducting properties are directly…
Multicolor and monodisperse Gd2O3:Ln (Ln = Eu3+, Tb3+, Dy3+, Sm3+, Yb3+/Er3+, Yb3+/Tm3+, and Yb3+/Ho3+) nanocrystals (NCs) with narrow size distribution were prepared by a homogeneous precipitation method followed by a subsequent calcination process. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmi…
We report the use of a solution-processed ZnO nanoparticle buffer layer in hybrid solar cells based on blends of poly(3-hexylthiophene) (P3HT) and CdSe quantum dots. Depending on the size of the CdSe nanocrystal, these devices exhibit 20–70% higher photocurrent output than similar devices without the ZnO nanoparticle…
Here we reported on the first example of a Folic acid-based molecular hydrogel with nanosphere morphology as a delivery system for Taxol.
Significant advantages result from combining the disparate hydrogen release pathways for ammonia-borane (AB) dehydrogenation using ionic liquids (ILs) and transition metal catalysts. With the RuCl(2)(PMe(3))(4) catalyst precursor, AB dehydrogenation selectivity and extent are maximized in an IL with a moderately coord…
This article reviews the general characterization of nano-objects, especially engineered nanoparticles (ENPs) and discusses analytical techniques commonly used for their determination. The main aspect of this review covers the use of the inductively coupled plasma (ICP) technique for the determination of ENPs itself o…
Symmetric oligothiophene derivatives containing hydrogen bond forming segments create self-supporting organogels consisting of self-assembled 1D nanostructures at low concentrations. Hydrogen bond formation and π-π stacking were both found to be crucial for the formation of conductive supramolecular networks of 1D nan…
Nickel cobalt (Ni-Co) oxides with various Ni/Co ratios are synthesized by using a sol-gel process. Electrochemical performance, microstructure, morphology and BET surface area are found strongly related to Ni and Co concentration. Increasing Co concentration changes the oxide microstructure from NiO crystal dominate s…
The different methods for modification of carbon nanotubes with dendrimers or hyperbranched polymers are summarized, and recent development is highlighted by discussing some representative examples in detail.
We report formation of nano-to-microscale satellite droplets in the geometrical shadow of high contact angle primary drops during dropwise water condensation on a nanostructured superhydrophobic surface (SHS). The primary drops contribute to the heat transfer process by sweeping up satellite droplets without covering…
Despite the superior bulk protonic conductivity combined with chemical stability in the temperature region in which intermediate-temperature solid oxide fuel cells (IT-SOFCs) are operated, the use of polycrystalline ceramics of yttrium-doped barium zirconates (BZY) as a solid electrolyte is still largely limited mainl…
Semiconductor quantum dots exhibit great potential for applications in next generation high efficiency, low cost solar cells because of their unique optoelectronic properties. Cu(2)ZnSnS(4) (CZTS) nanocrystals and graphene quantum dots (GQDs) have recently received much attention as building blocks for use in solar en…
Metal nanoparticles have been intensively studied within the past decade. Nanosized materials have been an important subject in basic and applied sciences. Zinc oxide nanoparticles have received considerable attention due to their unique antibacterial, antifungal, and UV filtering properties, high catalytic and photoc…
A rare paramagnetic organometallic nickel(I) olefin complex can be isolated using the ligand bis(5H-dibenzo[a,d]cyclohepten-5-yl)amine. This complex and related nickel(0) hydride complexes show very high catalytic activity in the dehydrogenation of dimethylamino borane with release of one equivalent of dihydrogen.
This contribution reviews the preparation, main characteristics and advantages of macroporous monolithic microreactors for the synthesis of fine chemicals by continuous flow catalytic processes. The review focuses on different types of monolith (polymers, polymer/glass, silica, zeolites) exhibiting macropores of typic…