Facile synthesis of graphene-supported Ni-CeOx nano-composites as highly efficient catalysts for hydrolytic dehydrogenation of ammonia borane  

作　　者：Qilu Yao Zhang-Hui Lu Yuwen Yang Yuzhen Chen Xiangshu Chen Hai-Long Jiang 

机构地区：[1]Institute of Advanced Materials (IAM), College of Chemistry and Chemical Engineering, giangxi Normal University, Nanchang330022, China [2]Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science andTechnology, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China

出　　处：《Nano Research》2018年第8期4412-4422,共11页纳米研究（英文版）

摘　　要：Development of low-cost and high-performance catalysts for hydrogen generation via hydrolysis of ammonia borane （NH3BH3, AB） is a highly desirable pathway for future hydrogen utilization. In this work, Ni nanocatalysts doped with CeOx and supported on graphene （Ni-CeOdgraphene） were synthesized via a facile chemical reduction route and applied as robust catalysts for the hydrolysis of AB in aqueous solution at room temperature. The as-synthesized Ni-CeOdgraphene nanocomposites （NCs） exhibited excellent catalytic activity with a turnover frequency （TOF） as high as 68.2 min-1, which is 49-fold higher than that for a simple Ni nanoparticle catalyst and is among the highest values reported for non-noble metal catalysts in AB hydrolysis. The development of efficient and low-cost Ni-CeOdgraphene catalysts enhances the feasibility of using ammonia borane as a chemical hydrogen storage material, which may find application in a hydrogen fuel-cell based economy.Development of low-cost and high-performance catalysts for hydrogen generation via hydrolysis of ammonia borane （NH3BH3, AB） is a highly desirable pathway for future hydrogen utilization. In this work, Ni nanocatalysts doped with CeOx and supported on graphene （Ni-CeOdgraphene） were synthesized via a facile chemical reduction route and applied as robust catalysts for the hydrolysis of AB in aqueous solution at room temperature. The as-synthesized Ni-CeOdgraphene nanocomposites （NCs） exhibited excellent catalytic activity with a turnover frequency （TOF） as high as 68.2 min-1, which is 49-fold higher than that for a simple Ni nanoparticle catalyst and is among the highest values reported for non-noble metal catalysts in AB hydrolysis. The development of efficient and low-cost Ni-CeOdgraphene catalysts enhances the feasibility of using ammonia borane as a chemical hydrogen storage material, which may find application in a hydrogen fuel-cell based economy.

关 键 词：hydrogen generation ammonia borane CATALYSIS GRAPHENE nickel 

分 类 号：TQ426.8[化学工程] TG292[金属学及工艺—铸造]