We investigate the conditions for reactivity enhancement of catalytic processes in porous solids by use of molecular traffic control (MTC) as a function of reaction rate and grain size. With dynamic Monte-Carlo simulations, continuous-time random walk theory and solutions of the Master equation we obtain a quantitative description of the MTC effect for a network of intersecting single-file chan...

Fluorescent nanoparticles have a variety of biomedical applications as diagnostics and traceable drug delivery agents. Highly fluorescent porous silica nanoparticles were synthesized in a water/oil phase by a microemulsion method. What is unique about the resulting porous silica nanoparticles is the combination of a single-step, efficient synthesis and the high stability of its fluorescence emi...

Fabrication of hollow microporous organic capsules (HMOCs) could be very useful because of their hollow and porous morphology, which combines the advantages of both microporous organic polymers and non-porous nanocapsules. They can be used as storage materials or reaction chambers while supplying the necessary path for the design of controlled uptake/release systems. Herein, the synthesis of HM...

Unique, porous gold nanobelts consisting of self-organized nanoparticles were synthesized in a high yield by morphology-preserved transformation from metal-surfactant complex precursor nanobelts formed by a bolaform surfactant dodecane-1,12-bis(trimethylammonium bromide) (N-C(12)-NBr(2)) and HAuCl(4). It was revealed that the precursor nanobelts of the stoichiometric N-C(12)-N(AuCl(4))(2) compl...

Porous nanoparticles with interfacial adhesiveness boost the selectivity of separation membranes to achieve size-selective nanofiltration.

Dodecanoic acid provides good control on the synthesis of titanium MOF nanoparticles for straightforward fabrication crystalline, porous thin films.

Silicon-based mesoporous nanoparticles have been extensively studied to meet the challenges in the drug delivery. Functionality of these nanoparticles depends on their properties which are often changing as a function of particle size and surrounding medium. Widely used characterization methods, dynamic light scattering (DLS), and transmission electron microscope (TEM) have both their weaknesse...

Carbon materials have been used in a wide range of applications, for instance, as electrodes, electrocatalysts, or electrocatalyst supports in energy-storage and -conversion devices, because of low costs, high electrical conductivity, chemical inertness, and thermal stability. Among the various carbon materials, nitrogen-doped carbon is of particular interest because it exhibits excellent elect...

We demonstrate a new design concept where the interaction between silica nanoparticles (about 1.5 nm in diameter) with titania nanoparticles (anatase, about 4 nm or 6 nm in diameter) guides a successful formation of mesoporous titania with crystalline walls and controllable porosity. At an appropriate solution pH (~1.5, depending on the deprotonation tendencies of two types of nanoparticles), t...

We present a novel optical element - fiber microaxicon (FMA) for laser radiation focusing into a diffraction-limited spot with Bessel-like profile as well as for precision laser nanostructuring of metal film surfaces. Using the developed FMA for single-pulse irradiation of Au/Pd metal films on quartz substrate we have demonstrated the formation of submicron hollow microbumps with a small spike ...