Introduction to Porous Oxide

Heterogenous catalysts are often nanoscale metal particles supported on high surface area, porous oxide materials and exhibit feature sizes across multiple scattering regimes with respect to the mid-infrared wavelength.

Ordered mesoporous oxides obtained by combining sol-gel and self-assembly exhibit high surface area, controlled porosity, monodisperse pores in the mesoscale and amorphous or crystalline inorganic framework.

Cemented carbide surface can be induced to fully oxidize and generate highly porous oxide layer which is much easier to remove with micro milling tool.

In the Nb-containing alloys, the formation of different Nb2O5 polytypes near the metal/oxide interface caused a highly porous oxide scale and severe oxide spallation.

A thick and porous oxide layer rich in Fe, Cr, and Cu is found in bare steel/YSZ ceramic joints, which is induced by the severe oxidation and its intense reaction with CuO during the brazing process.

We suppose that the interaction between cells and implants also depends on such relief peculiarities as continuous or discontinuous topography, subcellular distance between peaks and presence of porous oxide layer.

After pretreating the Al surface with anodization, a porous oxide film with a pore diameter of 40–70 nm and a porosity of 25.

The results showed the formation of porous oxide films with varying thicknesses from 0.

In turn, the poor oxidation resistance of ZrB2@20 vol% LaF3 was caused by the “anchoring” of LaF3 cladding layer and locally-coated ZrB2 particles, which led to the in situ reactions and formation of a porous oxide scale (~400 μm).

Exposing test samples to Na2SO4/NaCl (3:1 wt%) salt mixture at 750 °C, creates a 40 µm of porous oxide scales containing the outer layer of chromium oxide and the inner layer of chromium–nickel oxides.

A study is performed for CO2 adsorbents based on mesoporous oxide matrices modified with zinc oxide, magnesium oxide, and sodium carbonate.

This is consistent with scanning electron microscopy (SEM) images, showing the presence of a porous oxide matrix that fills localized corrosion sites on the metal surface after 24 h of immersion in a 0.

Heterogenous catalysts are often nanoscale metal particles supported on high surface area, porous oxide materials and exhibit feature sizes across multiple scattering regimes with respect to the mid-infrared wavelength.

The paper considers two types of nanocomposites: physical mixtures—ionic liquids thickened with inorganic oxide fillers and systems formed by porous oxide materials and ionic liquids, in which the ionic liquids can be included into the nanocavities of the inorganic materials.

To improve cytocompatibility of Ti6Al4V alloy, porous oxide coatings were prepared on its surface through micro-arc oxidation (MAO) in the Na2B4O7 electrolyte plus KOH.

Among various nano-engineering techniques used for titanium surface modification, anodization is a simple, high-throughput and low-cost process, resulting in a nanoporous oxide coating which can promote osseointegration and impart antimicrobial and immunomodulatory properties.

The nanoporous oxide 12CaO·7Al2O3 (C12A7) can capture large concentrations of extra-framework species inside its nanopores, while maintaining its thermodynamical stability.

The nanoporous oxide 12CaO ⋅ 7Al2O3 (C12A7) offers the possibility of capturing large concentrations of environmentally damaging extra-framework species in its nanopores.

Herein we report on non-fouling polymer nanofilms that are grafted onto the pore walls of supported porous oxide structures that confer to them the lacking scratch resistance.

Holes and porous oxide structures were pre-fabricated on the metal sheet.

Photoinduced electron transfer into mesoporous oxide substrates is well-known to occur efficiently for both singlet and triplet excited states in conventional metal-to-ligand charge transfer (MLCT) dyes.

Dye-sensitized semiconductor oxide photoelectrodes in which light is absorbed by a monomolecular layer of dye chemisorbed on a porous oxide substrate have attracted considerable interest in the last 35 years, mainly for the conversion of sunlight to electricity, in dye-sensitized solar cells (DSSCs) with maximal efficiencies in the range 10-15%, and, most recently, as dye-sensitized photoelectrochemical cells (DSPECs) for the generation of solar fuels.

The formation of a porous oxide surface doped with osteoconductive elements, Ca, P and Mg, to enhance osseointegration, was achieved through micro arc oxidation.

A porous oxide surface layer and relatively dense subsurface layer were formed under laser irradiation.