Abstract Silicon oxycarbides can be considered as being carbon‐containing silicates consisting of glass networks in which oxygen and carbon share bonds with silicon. The carbon‐for‐oxygen substitution silicate has been shown to induce significant changes the network connectivity consequently strong improvements properties network. For instance, SiOC glasses exhibit Young's moduli, hardness values, transition, crystallization temperatures are superior those vitreous silica. Moreover, silicon...

This report describes methods to produce large-area films of graphene oxide from aqueous suspensions using electrophoretic deposition. By selecting the appropriate suspension pH and deposition voltage, negatively charged sheets can be produced with either a smooth "rug" microstructure on anode or porous "brick" cathode. Cathodic occurs in low application relatively high which facilitates gradual change colloids' charge negative positive as they adsorb protons released by electrolysis water....

Bioactive glasses (BGs) are promising bone substitute materials. However, under certain circumstances BGs such as the well-known 45S5 Bioglass® (composition in wt%: 45.0 SiO2, 24.5 Na2O, CaO, 6.0 P2O5) act cytotoxic due to a strong increase pH caused by burst release of sodium ions. A potential alternative is sodium-reduced fluoride-containing BG belonging CaO–MgO–SiO2 system, namely BG1d-BG 46.1 28.7 8.8 MgO, 6.2 P2O5, 5.7 CaF2, 4.5 Na2O), that has already been evaluated in-vitro, in-vivo...

Tin dioxide (SnO2) nanoparticles were straightforwardly synthesized using an easily scaled-up liquid route that involves the hydrothermal treatment, either under acidic or basic conditions, of a commercial tin particle suspension including potassium counterions. After further thermal post-treatment, nanomaterials have been thoroughly characterized by Fourier transform infrared and Raman spectroscopy, powder X-ray diffraction, transmission electron microscopy, photoelectron nitrogen sorption...

Novel bioactive glasses based on a Ca- and Mg-modified silicon oxycarbide (SiCaMgOC) were prepared from polymeric single-source precursor, their in vitro activity towards hydroxyapatite mineralization was investigated upon incubating the samples simulated body fluid (SBF) at 37 °C. The as-prepared materials exhibit an outstanding resistance against devitrification processes maintain amorphous nature even after exposure to 1300 X-ray diffraction (XRD) analysis of SiCaMgOC SBF test showed...

Iron-oxide nanoparticle monolayers and multilayers were assembled using dc electrophoretic deposition. The rate of deposition the total particle controlled by varying concentration nanoparticles time, respectively. Using scanning electron microscopy, we performed a time-resolved study that demonstrated growth monolayer from single isolated to nearly complete layer. We observed tight, hexagonal packing indicating strong particle-particle interaction. Multilayer was assessed microscopy atomic...

The controlled electrophoretic deposition of monolayers and ultrathin films 4.0 nm TiO(2) nanocrystals from stable, nonpolar solvent-based suspensions is reported. Stable were prepared in hexane, the mobility was enhanced by a combination liquid-liquid extraction followed mechanical surfactant removal high-speed centrifugation. evolution density nanocrystal studied transmission electron microscopy optical transmittance spectroscopy. Ultrathin assembled while maintaining...

The bioactivity of Ca and/or B modified silicon oxycarbides has been assessed in vitro upon immersion SBF (simulated body fluid). In the context present work, refers to likeliness hydroxyapatite crystallization (biomineralization) on surface a material when contact with physiological fluids. incorporation and into oxycarbide glass network is found increase its bioactivity, which seems scale content Ca; thus, SiOC relatively large Ca/Si molar ratio (i.e., 0.12) shown exhibit bioactive...

A versatile synthetic method, based on a solvothermal synthesis technique, has been developed for the fabrication of TiO2 nanocrystals with different shapes, such as nanowires, nanorods and nanospheres. The central characteristic our approach is production coordination complex at an intermediate stage reaction that possesses appropriate symmetry using two distinct ligands, oleic acid oleylamine. Those ligands have binding strengths, which specifically dictate shape both resulting...

Medical nutrients obtained from plants have been used in traditional medicine since ancient times, owning to the protective and therapeutic properties of plant extracts products. Glycyrrhizic acid is one those that, apart its effect, may contribute stronger bones, inhibiting bone resorption improving structure biomechanical strength. In present study, we investigated effect a bioactive glass (BG) addition structure-property relationships supramolecular assemblies formed by glycyrrhizic (GA)...

Monolayers of iron oxide nanoparticles two different sizes, 9.6 nm and 16.5 nm, were fabricated through electrophoretic deposition. The arrangements within the films analyzed using technique Voronoi tessellations. These analyses indicated that possessed equivalent degrees ordering, uniform over centimeter length scales. Precise measurements interparticle spacing obtained, magnitudes magnetic dipole interactions calculated. dipole-dipole interaction among larger was 14 times than smaller...

There is an increasing clinical need to develop novel biomaterials that combine regenerative and biocidal properties. In this work, we present the preparation of silver/silica-based glassy bioactive (ABG) compositions via a facile, fast (20 h), low temperature (80 °C) approach their characterization. The fabrication process included synthesis glass (BG) particles followed by surface modification with silver nanoparticles. microstructural features ABG samples before after exposure simulated...

Abstract Ca‐ and/or B‐modified silicon oxycarbides were synthesized via pyrolysis of suitable polysilsesquioxane‐based single‐source precursors. Their polymer‐to‐ceramic transformation was investigated with thermogravimetric analysis, coupled in situ evolved gas analysis. The prepared respect to their crystallization behavior, network architecture, and chemical compositions. connectivity can be affected/tuned upon using two different “tools”: (a) first, the use modifiers, such as Ca our...

The magnitude of the electric dipole moment TiO2 nanocrystals was tuned as a function shape nanocrystal to facilitate formation tightly-packed monolayers, fabricated by electrophoretic deposition. aided monolayers with quasi-hexagonal ordering. Voronoi tessellation analysis confirmed that nanorods facilitated higher degrees order than nanospheres. Thermal and dilatometric analyses demonstrate nanocrystals' sintering temperature reduced below 1250 °C—a useful development for device applications.

We present a one-pot process to produce an extremely dense packed YSZ nanostructure that can consolidate at unconventionally low temperature.

A novel technique of producing freestanding carbon nanotube films (buckypapers) using electrophoretic deposition (EPD) and post-EPD electrochemical separation (PEPDECS) is introduced. Multiwalled nanotubes (CNTs) were deposited from an aqueous suspension onto stainless steel substrates a direct current EPD procedure. Following drying reinsertion the electrodes into deionized water, reversal in direction between increase electric field facilitated intact film substrate. The surface morphology...

There is an increasing clinical need to develop novel biomaterials that combine regenerative and biocidal properties. In this work, we present the preparation of silver /silica based glassy bioactive (ABG) compositions via a facile, fast (20h), low temperature (80 °C) approach their characterization. The fabrication process included synthesis glass (BG) particles followed by surface modification with nanoparticles. microstructural features ABG samples before after exposure simulated...