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• W4283755416 abstract "In this work, cobalt–tungsten–boron nanoparticles (Co–W–B) have been successfully deposited on foam Ni to manufacture thin-film catalysts by electroless plating technique and applied in hydrogen generation from ammonia borane (NH 3 BH 3 ) hydrolysis. Physicochemical properties of Co–W–B nanoparticles are characterized by XRD (Powder X–ray diffraction), SEM (Scanning electron microscopy), and EDS (Energy dispersive X–ray spectroscopy). It is observed that Co–W–B showed irregular spherical structure on the surface of foam Ni substrate. An increase of depositional pH value in the preparation process leads to the change of particle size. When the pH value is equal to 11.5, as-synthesized Co–W–B exhibits the smaller particle size, which suggests that depositional pH value has directly impacted the nucleation and growth of catalysis particles. The optimized Co–W–B catalyst displays higher catalytic activity toward NH 3 BH 3 hydrolysis with a specific rate of hydrogen generation of 12933.3 mL min −1 ·g −1 at room temperature. Moreover, the lower apparent activation energy of 47.3 kJ mol −1 is achieved. Compared with previously reported catalysts, the as-obtained catalytic performance is situated at the better rank. Moreover, the reusability has been investigated under the mild NH 3 BH 3 hydrolysis conditions. It reveals that as-fabricated thin-film Co–W–B maintains excellent durability after five cycles. A possible mechanism for the released hydrogen from NH 3 BH 3 hydrolysis using Co–W–B catalyst has been proposed. • Thin-film Co–W–B catalyst is synthesized by electroless plating technique. • The optimized Co–W–B catalyst shows the high HGR of 12933.3 mL min −1 ·g −1 for NH 3 BH 3 hydrolysis at 298 K. • The catalytic activity of Co–W–B catalyst is situated at the better rank. • The possible mechanism for the released hydrogen has been proposed." @default.
• W4283755416 created "2022-07-02" @default.
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• W4283755416 date "2022-07-01" @default.
• W4283755416 modified "2023-10-18" @default.
• W4283755416 title "Preparation and catalytic activity of thin-film cobalt–tungsten–boron for the hydrolysis of ammonia borane" @default.
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• W4283755416 doi "https://doi.org/10.1016/j.ijhydene.2022.06.084" @default.
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