Tungsten(VI) oxide-supported nickel/silver nanoparticles for photocatalytic hydrogen evolution from ammonia-borane

Tungsten(VI) oxide-supported nickel/silver nanoparticles for photocatalytic hydrogen evolution from ammonia-borane

Developing efficient catalysts for hydrogen (H2) evolution from ammonia-borane (AB, NH3BH3) is crucial for fuel cell applications. Photocatalytic hydrolysis of AB by heterogeneous catalysts under light irradiation has attracted attention as an effective technique for H2 evolution. Here, we report an...

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Bibliographic Details
Published in:International journal of hydrogen energy Vol. 72; pp. 60 - 73
Main Authors: Çetin, Mustafa Berat, Top, Tuba, Yurderi, Mehmet, Zahmakıran, Mehmet, Rakap, Murat
Format: Journal Article
Language:English
Published: Elsevier Ltd 27-06-2024
Subjects:
Ammonia borane
Catalysts
Hydrogen evolution
Hydrolysis
Nickel
Silver
Hydrolysis
Silver
Nickel
Catalysts
Hydrogen evolution
Ammonia borane
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Summary:Developing efficient catalysts for hydrogen (H2) evolution from ammonia-borane (AB, NH3BH3) is crucial for fuel cell applications. Photocatalytic hydrolysis of AB by heterogeneous catalysts under light irradiation has attracted attention as an effective technique for H2 evolution. Here, we report an impregnation-reduction method to prepare the tungsten(VI) oxide-supported nickel/silver nanoparticles (denoted as NiAg/WO3) and their characterization by advanced tools such as ICP-OES, PXRD, SEM, TEM, and XPS. The initial turnover frequency (TOF), activation energy (Ea#), activation enthalpy (ΔH#), and activation entropy (ΔS#) values of NiAg/WO3 nanoparticles in H2 evolution from AB under visible light irradiation are calculated as 56.6 molH2 ⋅ molNi0.27Ag0.73−1 ⋅ min−1, 52.14 kJ ⋅ mol−1, 47.78 kJ ⋅ mol−1, and −91.62 J ⋅ mol−1 ⋅ K−1, respectively. These findings are especially significant for a feasible application of AB in H2 fuel cells. [Display omitted] •Ni0.27Ag0.73/WO3 catalyst was prepared according to the impregnation-reduction method.•Characterization of the Ni0.27Ag0.73/WO3 catalyst was performed using advanced analytical methods.•The Ni0.27Ag0.73/WO3 catalyst provided an TOF value of 56.6 min−1 in the hydrolysis of AB under visible light irradiation.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2024.05.361