New inorganic‐organic hybrid anion exchange membranes are produced after incorporation of tantalum oxide into trimethylammonium‐functionalized polyethylene pyrrole‐co‐polyethylene ketone ...(functionalized polyketone, FPK), obtained by the chemical modification of a polyketone polymer. The influence of tantalum oxide fillers on the properties of the synthesized membranes is investigated. The interaction between inorganic fillers and the polymer chains is studied using Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR‐FTIR). The thermal analysis of the FPK membranes reveals they are thermally stable at up to 250°C. However, the incorporation of the inorganic fillers reduces the thermal stability. Modulated Differential Scanning Calorimetry (MDSC) results indicate that the inclusion of inorganic fillers leads to an increase in crystallinity. This study reports that the properties of the bulk polymer can be tuned by controlling the degree of functionalization and content of inorganic fillers, as confirmed by Near Ambient Pressure X‐Ray Photoelectron Spectroscopy (NAP‐XPS) studies. Finally, Broadband Electrical Spectroscopy (BES) studies demonstrate that the hybrid membranes are characterized by several polarization phenomena contributing to the overall ion conductivity of the material, which at RT is of 1.46 and 1.61 mS cm−1 for the FPK cast membrane and the hybrid membrane with 5.0 wt.% of Ta2O5 filler, respectively.
A novel family of hybrid inorganic‐organic anion exchange membranes is prepared by incorporation of tantalum oxide into trimethylammonium‐functionalized polyethylene pyrrole‐co‐polyethylene ketone. The inclusion of the inorganic filler leads to a modulation of the materials’ properties due to the active interactions established between the inorganic and organic components. The highest RT ion conductivity detected is 1.61 mS cm−1.
In present research, novel cobalt bismuth layered double hydroxides (Co/Bi‐LDHs) were fabricated by urea hydrolysis approach at laboratory scale in mixed solvent of water and ethylene glycol. ...Synthesized product was analyzed by different techniques such as powder X‐ray diffraction (PXRD), scanning electron microscopy (SEM), and Fourier transmission infrared spectroscopy (FTIR). Cobalt oxide (Co3O4) was obtained after calcinations in nanometer range, which showed excellent catalytic characteristics. Calcined LDHs were used as photocatalyst to degrade Congo Red (CR) under different conditions of catalyst and hydrogen peroxide. Different parameters such as flash point, fire point, cloud point, pour point, kinematic viscosity, and specific gravity were also studied in order to check the efficiency of commercial diesel at different concentrations of catalyst.
The Co/Bi‐LDHs are fabricated by urea hydrolysis approach at laboratory scale in mixed solvent of water and ethylene glycol.
Back Cover: In article number 2100409 by Voto Di Novo and co‐workers, the incorporation of tantalum oxide into trimethylammonium‐functionalized polyethylene pyrrole‐co‐polyethylene ketone is carried ...out for the preparation of inorganic–organic hybrid anion exchange membranes, which are promising candidates for application in electrochemical energy conversion devices.
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•Zinc-aluminum layered double hydroxide (Zn-Al LDH) nanoparticles are prepared.•The lattice is studied in different orientations to understand the arrangements of atoms.•Results are ...analyzed through XRD, SEM and TEM techniques.
Zinc-aluminum layered double hydroxide (Zn-Al LDHs) nanoparticles are prepared by a solvothermal method. To study and investigate the morphology and properties of prepared Zn-Al LDH nanoparticles, nanoparticles are subjected to different instrumental techniques. It is clear from X-ray diffraction pattern, the product is composed of cubic unit cell, highly pure and crystalline. Data obtained from XRD analysis is further subjected to different softwares to understand the crystal structure and atomic coordinates. The lattice is studied in different orientations to understand the possible arrangements of atoms within unit cell. By scanning electron microscope (SEM) and transmission electron microscope (TEM), it is observed that the synthesized Zn-Al LDH product is dispersed needle like, regular in shape with compact structure, sharp needle like boundary with a size of approximately 50–150 nm. The synthesized nanoparticles are used as additive for combustion characteristics (flash and fire points) and physical characteristics (cloud and pour points, kinematics viscosity and specific gravity) of crude kerosene oil.
