CeFe-Based Bead Nanocomposites as Catalysts for Oxidation of Ethylbenzene Reaction

Oxides with good catalytic performances and more selectivity to valuable chemicals attract numerous research interests for the oxidation of hydrocarbon fuels. Taking advantage of the nanocasting route, CeFe-based nanocomposites were prepared and characterized to achieve superior stability in the oxidation of cyclic compounds. Adding a third metal (Me = Ni2+, Mn2+/Mn3+ or Co2+/Co3+) to the CeFe-based oxide helped the formation of Ce3+/Ce4+, Fe2+/Fe3+ and active couples in the ternary nanocomposites. The solids having a spherical morphology and good textural properties enabled the formation of promising ternary oxide catalysts for the oxidation of ethylbenzene compared with those of binary and single monoxide nanocomposites. The close contact among the Ce3+/Ce4+ and Fe2+/Fe3+ pairs with Ni2+ species provided the formation of a highly stable CeFeNi catalyst with enhanced performance in the oxidation of cyclic compounds such as ethylbenzene, styrene and benzyl alcohol substrates.

A CMK-5-encapsulated MoSe2 composite for rechargeable lithium-ion batteries with improved electrochemical performance

A composite of MoSe2/CMK-5 was fabricated through a nanocasting route, in which ultra-thin two-dimensional MoSe2 nanosheets were encapsulated in the mesopores of CMK-5, exhibiting improved electrochemical performance for lithium-ion batteries.

Nanocasting synthesis of an iron nitride-ordered mesopore carbon composite as a novel electrode material for supercapacitors

A series of novel Fe2N/ordered mesoporous carbon (OMC) composites (Fe2N@OMC) were synthesized via nanocasting route and ammonia calcination. The Fe2N@OMC electrodes exhibit an outstanding property for super capacitor.

Synthesis of ordered mesoporous uranium dioxide by a nanocasting route

Ordered mesoporous UO

Synthesis, characterization of nitrogen-doped mesoporous carbon spheres and adsorption performance

Nitrogen-doped mesoporous carbon spheres (NMCS) were prepared by a nanocasting route using benzoxazine resins as the precursor of nitrogen and carbon, and ordered mesoporous silica spheres as the hard template to remove methyl orange (MO).

Mesoporous SnO2 by Nanocasting Route Using Various Silica Templates for Gas Sensing Application

Mesoporous SnO2 was successfully synthesized via nanocasting route using various silica matrices likely KIT-6, SBA-15 and SBA-16 as hard templates. The chemical and structural properties of these materials were characterized by means of XRD, N2 adsorption-desorption and TEM analyses. All replica products exhibited well-defined mesoporous structures and large surface areas as well as highly crystalline frameworks. Sensors were fabricated from the as-prepared mesoporous SnO2 replicas and used to test the response to 1000 ppm of ethanol vapour at different operating temperatures. The results showed that the mesoporous SnO2 sensors nanocasted from KIT-6, SBA-15 and SBA-16 silica templates exhibits excellent gas response as compared to a bulk SnO2 material, suggesting the potential application of the sensor for detecting ethanol vapour. Maximum sensitivity (~ 18.7) was reached at 300 °C using mesoporous SnO2 sensor nanocasted from KIT-6 silica. It can be explained by the large surface area and well-defined mesostructure of SnO2(KIT-6), which lead to highly effective surface interaction between the ethanol molecules and the surface active sites.