Bamboo fungus-derived magnetic porous carbon encapsulated nickel stabilized Rh nanoparticles as efficient catalysts for hydrolytic dehydrogenation of ammonia borane. (6th October 2021)

• Record Type: Journal Article
• Authors: Sun, Ting; Lu, Rui; Long, Yan; Li, Qianggen; Wu, Jie; Fan, Guangyin
• Is Part Of: International journal of hydrogen energy. Volume 46:Number 69(2021)
• Page Start: 34229
• Page End: 34238
• Publication Date: 2021-10-06
• Subjects: Bamboo fungus -- Nickel -- Rhodium -- Ammonia-borane -- Hydrolytic dehydrogenation -- Hydrogen production; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.07.222
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Biomass-derived porous carbons are generally used as supports for metal nanoparticle (NP) stabilizations, while the strong hydrophilicity of such materials makes the as-prepared catalysts hard to be isolated after reaction, significantly affecting their potential applications. Herein, magnetic N-functionalized carbon (CN) encapsulated Ni composite (Ni@CN) prepared via pyrolysis of bamboo fungus pre-absorbed with nickel nitrate is exploited as a matrix to synthesize Rh/Ni@CN hybrid, which can be used as a magnetically recoverable catalytic material for hydrolytic dehydrogenation of ammonia borane (AB) to generate hydrogen. The Rh/Ni@CN (Rh loading: 0.84 wt%) exhibits an optimal activity (turnover frequency: 351 min −1 ) for hydrogen evolution from hydrolytic dehydrogenation of AB. Most importantly, this catalyst can be simply isolated by a magnet and reused at least five times with complete conversion of AB to hydrogen. The strong interaction between the two metals and the small size of Rh NPs are responsible for the improved catalytic activity for hydrolytic dehydrogenation of AB. This work provides an eco-friendly and efficient strategy to fabricate excellent catalysts in catalytic applications. Highlights: Bamboo fungus pre-absorbed with Ni(NO3 )2 was used as precursor for preparing Ni@CN. The as-formed Ni@CN was applied to deposit Rh NPs via an in-situ reduction method. Rh/Ni@CN with a low Rh loading (0.84 wt%) had a TOF of 351 min −1 for AB hydrolysis. The synergistic effect between Rh and Ni contributed to the high performance. This catalyst was magnetically recoverable and could be reused for five times.