Anchoring and space-confinement effects to synthesize ultrasmall Pd nanoparticles for efficient ammonia borane hydrolysis. (16th October 2020)

• Record Type: Journal Article
• Authors: Mao, Mingyue; Chen, Qian; Wu, Jie; Fan, Guangyin
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 51(2020)
• Page Start: 27244
• Page End: 27253
• Publication Date: 2020-10-16
• Subjects: Palladium -- Ultrafine nanoparticles -- Uniform dispersion -- Hydrolysis -- Ammonia borane; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.07.097
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Hydrogen production from ammonia borane (AB) hydrolysis catalyzed by efficient heterogenous catalysts is regarded as a compelling strategy to meet the increasing requirement for clean energy. Palladium (Pd) nanoparticle (NP)-based catalysts have stimulated intensive attention for AB hydrolysis, while their catalytic performances still need to be significantly improved. By exploiting sodium hydroxide and three-dimensional (3D) architecture of interconnected porous carbon nanosheets (IPCNs) as a NP carrier, a simple yet efficient strategy is developed to synthesize uniformly distributed ligand-free Pd NPs (2.17 nm in diameter) for hydrogen generation from AB hydrolysis. The particle size and spatial dispersion control of Pd NPs on the IPCNs surface supply an abundance of surface-active sites and thus remarkable improve the catalytic performance for AB hydrolysis to hydrogen evolution. Specifically, the achieved Pd/IPCNs reveals an extremely high catalytic activity with a turnover frequency (TOF) of 122.8 min −1 toward AB hydrolysis, which is higher than that of many reported Pd-based catalysts. This simple, straightforward and efficient method is of significant importance for preparing metal NP catalysts with high catalytic activities for catalytic applications. Highlights: Uniformly dispersed ligand-free Pd NPs on 3D architecture of PC was synthesized. The Pd/IPCNs exhibited an extremely high catalytic activity toward AB hydrolysis. A very high turnover frequency of 122.8 min −1 toward AB hydrolysis was obtained.