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Open AccessArticle

Hydrogen Production from Ammonia Borane over PtNi Alloy Nanoparticles Immobilized on Graphite Carbon Nitride

by Mingya Zhang 1, Xue Xiao 1,2, Yan Wu 2, Yue An 3, Lixin Xu 2,4 and Chao Wan 2,3,4,*
1
Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, China
2
School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Coal Clean Conversion and High Valued Utilization, Anhui University of Technology, Ma’anshan 243002, China
3
College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
4
Ahut Chemical Science & Technology Co., Ltd., Ma’anshan 243002, China
*
Author to whom correspondence should be addressed.
Catalysts 2019, 9(12), 1009; https://doi.org/10.3390/catal9121009
Received: 31 October 2019 / Revised: 26 November 2019 / Accepted: 29 November 2019 / Published: 1 December 2019
(This article belongs to the Special Issue Catalysis for Energy Production)
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% H2 selectivity, yielding the extraordinary initial total turnover frequency (TOF) of 250.8 molH2 min−1 (molPt)−1 for hydrogen evolution from AB at 10 °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. View Full-Text
Keywords: ammonia borane; PtNi/g-C3N4; hydrogen storage; dehydrogenation ammonia borane; PtNi/g-C3N4; hydrogen storage; dehydrogenation
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MDPI and ACS Style

Zhang, M.; Xiao, X.; Wu, Y.; An, Y.; Xu, L.; Wan, C. Hydrogen Production from Ammonia Borane over PtNi Alloy Nanoparticles Immobilized on Graphite Carbon Nitride. Catalysts 2019, 9, 1009.

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