Journal
CATALYSTS
Volume 9, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/catal9121009
Keywords
ammonia borane; PtNi/g-C3N4; hydrogen storage; dehydrogenation
Categories
Funding
- Anhui Provincial Natural Science Foundation [1608085QF156, 1908085QB68]
- Natural Science Foundation of the Anhui Higher Education Institutions of China [KJ2019A0072]
- Foundation of Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology [ZJKL-ACEMT-1802]
- China Postdoctoral Science Foundation [2019M662060]
- Research Fund for Young Teachers of Anhui University of Technology [QZ201610]
- National Natural Science Foundation of China [21376005]
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Graphite carbon nitride (g-C3N4) supported PtNi alloy nanoparticles (NPs) were fabricated via a facile and simple impregnation and chemical reduction method and explored their catalytic performance towards hydrogen evolution from ammonia borane (AB) hydrolysis dehydrogenation. Interestingly, the resultant Pt0.5Ni0.5/g-C3N4 catalyst affords superior performance, including 100% conversion, 100% H-2 selectivity, yielding the extraordinary initial total turnover frequency (TOF) of 250.8 mol(H2) min(-1) (mol(Pt))(-1) for hydrogen evolution from AB at 10 degrees C, a relatively low activation energy of 38.09 kJ mol(-1), and a remarkable reusability (at least 10 times), which surpass most of the noble metal heterogeneous catalysts. This notably improved activity is attributed to the charge interaction between PtNi NPs and g-C3N4 support. Especially, the nitrogen-containing functional groups on g-C3N4, serving as the anchoring sites for PtNi NPs, may be beneficial for becoming a uniform distribution and decreasing the particle size for the NPs. Our work not only provides a cost-effective route for constructing high-performance catalysts towards the hydrogen evolution of AB but also prompts the utilization of g-C3N4 in energy fields.
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