Ammonia−borane (NH3BH3; AB) has been considered as an excellent chemical material for the hydrogen storage. However, developing highly efficient catalysts for continuous hydrogen generation from hydrolysis of AB is still a challenge for the future fuel cell applications. In this abstract, PtNi/NiO clusters coated by small sized hollow silica (R-PtNi/NiO@SiO2) were designed for efficient hydrogen generation from the hydrolysis of ammonia borane. The newly designed catalysis system showed extremely high activity with the initial turnover frequency (TOF) value reaching 1240.3 molH2 molPt-1 min-1, which makes it the most active Pt based catalyst for this reaction. Detailed characterization by means of STEM, XPS and EDS element mapping etc. reveals the excellent performance of R-PtNi/NiO@SiO2 deriving from the highly dispersed PtNi/NiO clusters and the reduction of Pt4+ on the surface of PtNi/NiO clusters to Pt0 at relatively low temperature.

PtNi/NiO Clusters coated by small sized hollow sillica: Novel design for efficient catalytic hydrogen production from hydrolysis of ammonia−borane

253rd National Meeting (2017)

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