In this study, TiO2 nanotube (TNT)/reduced graphene oxide (hGO) composites were prepared by an alkaline hydrothermal process. This was achieved decorating (GO) layers with commercially available nanoparticles (P90) followed synthesis, which converts the to small diameter (∼9 nm) TNTs on hGO surface. The medium used synthesize simultaneously GO deoxygenated (hGO). Compared GO, has a ∼70% reduction of oxygenated species after treatment. nature in confirmed X-ray diffraction (XRD), Raman, FTIR,...

The commercial application of biocatalysts depends on the development effective methods immobilization. immobilization enzymes greatly increases stability and eases burden enzyme cost thus, is widely pursued for efficient, selective, environmentally friendly catalysis. This brief perspective focuses recent in area porous materials. Recent work regarding inorganic mesoporous materials as well modifications to those summarized this paper. configuration supported membranes fibers may facilitate...

Yttrium-doped ceria (YDC) nanorods were prepared by hydrothermal synthesis and characterized using Raman, UV–vis, transmission electron microscopy, scanning microscopy/energy-dispersive X-ray spectroscopy, photoelectron powder diffraction. The showed an increase in the amount of oxygen vacancies with Y concentration. When doping level is <30%, optical band gap doped lower than that pure nanorods. At < 50% doping, composite exhibited a higher photocatalytic activity for degradation model...

Abstract Vanadium pentoxide (V 2 O 5 ) layered nanostructures are known to have very stable crystal structures and high faradaic activity. The low electronic conductivity of V greatly limits the application vanadium oxide as electrode materials requires combining with conducting using binders. It is well that organic binders can degrade overall performance need carefully controlled compositions. In this study, we develop a simple method for preparing freestanding carbon nanotube (CNT)‐V...

Silver vanadium oxide (SVO) and V2O5 nanowires have been hydrothermally synthesized. The as-made are over 30 µm long 10–20 nm in diameter. a layered structure with d-spacing of 1.07 nm. can be fabricated into free-standing flexible sheets by suction filtration. electrical conductivity the SVO is 0.5 S/cm, compared to 0.08 S/cm for nanowires. Li ion diffusion coefficient was 7 times higher than that An electrochromic device from displayed color-switching time 0.2 s bleached state (green)...

Separation of hydrocarbons is one the most energy demanding processes. The need to develop materials for selective adsorption hydrocarbons, under reasonable conditions, therefore paramount importance. This work unveils unexpected hydrocarbon selectivity in a flexible Metal Organic Framework (MOF), based on differences their gate opening pressure. We show dependence both chain length and specific framework-gas interaction. Combining Raman spectroscopy theoretical van der Waals Density...

The process of electrospinning, which produces fibers in the nanometer to micron range under influence high voltages, has been widely studied produce polymer and textile fibers. Mesoporous molecular sieve have produced our lab, this technique was extended an interwoven mesh polymer−molecular composite electroluminescent MEH-PPV SBA-15 were used An interesting aspect these composites is that fluorescence blue shifted composites. characterized by microscopy, vibrational spectroscopy, measurements.

PbS quantum dots (PbS QDs) were prepared on the inside and outside surfaces of TiO2 nanotubes by using thiolactic acid as an organic linker. The sizes QDs controlled employing a dip coating process to anchor onto nanotubes. with diameters 2−10 nm obtained adjusting concentration acid. located only first tubes double-chain cationic surfactant DDAB. supported characterized TEM, well Raman, FT-IR, UV−vis spectroscopy.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidation of alkanes catalyzed by zeolite-encapsulated perfluorinated ruthenium phthalocyanines.Kenneth J. Balkus Jr., Mona Eissa, and Rosario LevadoCite this: Am. Chem. Soc. 1995, 117, 43, 10753–10754Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995https://pubs.acs.org/doi/10.1021/ja00148a022https://doi.org/10.1021/ja00148a022research-articleACS PublicationsRequest reuse...

The demand for cost-efficient separations requires membranes with high gas flux and selectivity which opens the path further improvements. Mixed matrix (MMMs) made from 33.3 wt % ZIF-8 in 6FDA-durene were tested at 35 °C 3.5 atm. At loading of ZIF-8, H2, N2, O2, CH4 permeabilities increased approximately 400%. Cross-linking surface this MMM, by reacting ethylenediamine vapor, yielded a 10-fold increase H2/CO2, H2/N2, H2/CH4 selectivities respect to 6FDA-durene, preserving 55% H2 permeability...

TiO2 nanotubes functionalized with copper sulfide quantum dots were successfully prepared by a stepwise crystallization of CuS nanoparticles onto the nanotubes, using cysteine linkers. The products characterized Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM), UV−vis spectroscopy, and fluorescent spectroscopy. Photocatalytic behavior CuS/TiO2 was evaluated for photodecomposition malachite green phenol. effect QDs investigated...

Liquid fluoride thorium reactors have been considered as replacements for uranium-based nuclear reactors, having many economic and environmental advantages. The production of is usually accompanied by the separation from rare earth elements since major mineral, monazite, contains other elements. conventional manufacturing process involves a liquid–liquid extraction with organic ligands. There need to develop solid state absorbents good reusability metal ion processes. Porous carbon...