Chemical hydrogen generation for catalyzed reduction of organic pollutants using highly active MoCu oxysulfides: Influence of preparation method and hydrothermal time

• Published in: Materials chemistry and physics Vol. 283; p. 126036
• Main Authors: Naghmash, Mona A., Ibrahim, Marwa M.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01-05-2022; Elsevier BV
• Subjects: Catalysts; Copper; Durability; Dyes; Fourier transforms; Hydrogen generation; Hydrogen production; Infrared analysis; Infrared spectroscopy; Methylene blue; Nanoparticles; Nitrophenol; One-pot process; Oxysulfide; Photoelectrons; Pollutants; Reduction; X ray photoelectron spectroscopy; Durability; Reduction; Hydrogen generation; One-pot process; Oxysulfide
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2022.126036

Molybdenum copper oxysulfide (MoCu oxysulfide) nanoparticles were effectively synthesized in this study by one-pot process and hydrothermal method. The MoCu oxysulfide solid catalysts that were produced were thoroughly characterized via using X-ray diffraction (XRD), X-ray photoelectron spectrometer (XPS), Transmission electron microscope (TEM), Energy dispersive spectroscopic (EDX), Surface area analysis (BET) and Fourier transform infrared spectroscopy (FTIR). The sample's catalytic activities were evaluated by hydrogen generation from NaBH4 which was used in the reduction of 4- nitrophenol and some selected organic dyes (Methylene blue, Methyl orange and Remazol red). The results confirmed that MoCu oxysulfide catalyst prepared by hydrothermal method for 24 h (MoCuHy24) has the superior reduction activity compared with the other studied catalysts according to its high Cu+ to Cu2+ ratio. After multiple runs for reduction of Methyl orange dye, MoCuHy24 showed good stability and durability.
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•MoCu oxysulfides were synthesized by one-pot process and hydrothermal method.•MoCu oxysulfides applied as a catalyst in the reduction of 4- nitrophenol and some organic dyes.•MoCu oxysulfide catalyst prepared by hydrothermal method for 24 h (MoCuHy24) has the greater reduction activity.•MoCu oxysulfide catalyst prepared by hydrothermal method for 24 h shows an excellent reusability.