In the present study, we report a fabrication of dual-mode carbon coated gadolinia C@Gd₂O₃ particles by a facile hydrothermal synthesis method without using any organic solvents. The prepared C@Gd₂O₃ particles have a core–shell structure and a narrow size distribution in the range of 261±27 nm. The fluorescent properties of the prepared C@Gd₂O₃ particles were accessed by a room-temperature photoluminescence study, while the lon...

The effects of annealing temperatures and chelating agents on the structural and optical properties of ZnO nanoparticles were investigated. The average particle size of ZnO nanoparticles increased with increase of annealing temperatures. The decrease of the full width at half maximum (FWHM) with increasing annealing temperatures inferred increase of particle/grain growth. The grain sizes were also observed to be increased with increase of annealing temperatures. From the absorption spectra of...

Two-dimensional (2D) carbide Ti₃C₂ was synthesized by exfoliating Ti₃AlC₂ in HF solution and used for supercapacitive performance investigation in 3 M KOH electrolyte. The specific surface area (SSA) of as-synthesized Ti₃C₂ was 22.35 m²/g. Ti₃C₂-based supercapacitor electrodes exhibited good energy storage ability and had a volumetric capacitance 119.8 F/cm³ at the current density of ...

Synthetic inorganic pigments are most widely used in ceramic applications due to their excellent chemical and thermal stability and their lower toxicity to both human and environment as well. In the present work, black ceramic pigment CoFe₂O₄ has been synthesized by the complex polymerization method (CPM) with good chemical homogeneity. In order to study the influence of variables on the process of obtaining pigment through CPM, 2^(5-2) fractional factorial des...

The evolution of powder particle size, crystal structure, and surface chemistry was evaluated for micron scale NiO powders subjected to impact milling with commonly employed milling additives: methanol, Vertrel XF, and amorphous carbon. The effect of the different comminution protocols on sintered body microstructure was evaluated for high temperature sintering in inert atmosphere (N₂). X-ray photoelectron spectroscopy showed that NiO powder surface chemistry is surprisingly sensit...

Pure and noble metal (Pt, Pd, and Au) doped TiO₂ nanoceramics have been prepared from TiO₂ nanoparticles through traditional pressing and sintering. For those samples sintered at 550 ℃, a typical premature sintering occurred, which led to the formation of a highly porous microstructure with a Brunauer–Emmett–Teller (BET) specific surface area of 23 m²/g. At room temperature, only Pt-doped samples showed obvious response to hydrogen, with sensitivities a...