Preparation of mwcnt (multi-walled carbon nanotube) and cnw (carbon nanowall) supported pdhx nanoparticules with supercritic deposition method; Investigation of catalytic, magnetic and hydrogen storage characteristics

Within the scope of the thesis study, the vic-dioxime derivative ligand and Pd (II) complex were synthesized to be used in the supercritical carbon dioxide deposition method, at 2 different temperatures (70 and 90 ℃), 3 different total pressures (3000, 3500 and 4000 psi) and 4 different under H2 pressures (100, 150, 200 and 250 psi) Pd/PdHx nanoparticles were deposited on the surface of CNW and MWCNT support materials. The structures of the synthesized vic-dioxim derivative Pd (II) complexes were elucidated with FT-IR, 1H, 19F NMR and elemental analysis devices. Prepared Pd/PdHx-CNW and Pd/PdHx-MWCNT nanocatalysts were analyzed with HR-TEM, BET, XRD, PPMS and ICP-OES, and as a result of these analyzes, it was determined that nano-sized catalysts containing the advantages of homogeneous and heterogeneous catalysts were obtained. The fact that CNW was not used as a support material before in the supercritical carbon dioxide deposition method and that there was no study on PdHx formation in the ScCO2 method makes our study unique. In addition, catalytic activities of the obtained nanocatalysts were determined by the Suzuki-Miyaura C-C coupling reaction.