Preparation of different thin film catalysts by direct current magnetron sputtering for hydrogen generation

Authors : Gamze BOZKURT, Abdulkadir OZER, Ayse BAYRAKCEKEN YURTCAN

Pages : 1327-1338

View : 22 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, thin films of Co, Ni, Pd, and Pt were prepared on Co3O4 support material in pellet form using the direct current insert ignore into journalissuearticles values(DC); magnetron sputtering method for use as catalysts for hydrogen generation from NaBH4.Characterization of the catalysts was carried out using X-ray diffraction insert ignore into journalissuearticles values(XRD);, scanning electronic microscopy insert ignore into journalissuearticles values(SEM);, and X-ray photoelectron spectroscopy insert ignore into journalissuearticles values(XPS);. According to cross-sectional SEM images, catalyst thicknesses were observed in the range of approximately 115.3-495.8 nm. The particle sizes were approximately 25.0, 21.4, 33.9, and 9.5 nm for Ni-Co3O4, Co-Co3O4, Pd-Co3O4, and Pt-Co3O4 catalysts, respectively. The increase in NaOH initial concentration provides an increase in the rate of hydrogen generation for Co, Ni, and Pd catalysts. A maximum hydrogen generation rate of 1653 mL/ginsert ignore into journalissuearticles values(cat);.min was obtained for the Pt-Co3O4 catalyst.
Keywords : Direct current magnetron sputtering, hydrogen generation, sodium borohydride, catalyst