Synthesis, characterization and evaluation of unsupported porous NiS2 sub-micrometer spheres as a potential hydrodesulfurization catalyst

Investigation of metal xanthates as latent curing catalysts for epoxy resin via formation of in-situ metal sulfides

“…Since all of the metal xanthates used in this work exhibited thermal decomposition temperature and at the same time prominent curing catalytic activity only beyond 150 0 C. Its expected that the thermal decomposition of metal xanthates generating in-situ corresponding metal sulfides is responsible for induction of curing reaction of epoxy resin upon annealing. Several reports on catalytic activity of metal sulfides formed upon thermal annealing [43][44][45][46] in addition supports this probable mechanism of curing by metal xanthates.…”

Preparation and characterization of carboxyl-functionalized chitosan magnetic microspheres and submicrospheres for Pb2+ removal

“…The adsorbent with smaller particle is reported to have higher adsorption capacity due to its higher specific surface area [29]. Submicroparticles, with grain sizes ranging from 100 nm to 1.0 m, have shown excellent performance as a potential catalyst for its high surface area [30]. Besides, submicrometer fraction has been reported to be promising solid transducers in ion-selective electrodes for its high surface area, uniform structural size distribution, high hydrophobicity, and simple preparation process [31].…”

Nickel‐Based Sulfide Materials for Batteries

“…To synthesize r‐NiS, the same process was in use without CTAB. The f‐NiS and r‐NiS were synthesized through a hydrothermal approach without the addition of CTAB, and then Ni(NO 3 ) 2 ⋅6H 2 O as well as NaSCN acted as the precursors at a temperature of 220 °C for 24 h continuously . Both f‐NiS and r‐NiS possessed the same crystal structure, and all of the typical peaks are in great correspondence with the standard mode of NiS with rhombohedral crystalline.…”

“…In Mondal et al.’s work, the synthesis of nanostructured hollow NiS submicrometer spheres was completed with an ultrasonic spray pyrolysis (USP) method, which had been previously reported . The solution, which was composed of NiCl 2 ⋅6H 2 O, Na 2 S 2 O 3 ⋅5H 2 O, and colloidal silica, was synthesized with a previously described procedure . Firstly, they loaded the solution to a USP ultrasonic cell, after whose system was removed with argon atmosphere for half an hour, and then, they nebulized the solution using an ultrasonic atomizer and made the aerosol mist with carried argon using a tube furnace at the temperature of 450 °C.…”