Carbon dots-confined CoP-CoO nanoheterostructure with strong interfacial synergy triggered the robust hydrogen evolution from ammonia borane  

作　　者：Han Wu Yaojia Cheng Boyang Wang Yao Wang Min Wu Weidong Li Baozhong Liu Siyu Lu 

机构地区：[1]College of Chemistry,and Institute of Green Catalysis,Zhengzhou University,Zhengzhou 450001,Henan,China [2]College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China [3]Guangdong Provincial Key Laboratory of Optical Information Materials and Technology,Guangzhou 510631,Guangdong,China [4]College of Materials Science and Engineering,Zhejiang University of Technology,Hangzhou 310014,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2021年第6期198-205,I0006,共9页能源化学（英文版）

基　　金：financial support from the National Natural Science Foundation of China(Nos.21905253,51973200,51433003 and 21774041);the China Postdoctoral Science Foundation(2018M640681,2019T120632);JLU Science and Technology Innovative Research Team 2017TD-06;Guangdong Provincial Key Laboratory of Optical Information Materials and Technology(No.2017B030301007);the Center of Advanced Analysis & Gene Sequencing,Zhengzhou University。

摘　　要：Ammonia borane(NH_(3)BH_(3),AB) is promising for chemical hydrogen sto rage;however,current systems for rapid hydrogen production are limited by the expensive noble metal catalysts required for AB hydrolysis.Here we report the design and synthesis of a highly efficient and robust non-noble-metal catalyst for the hydrolysis of AB at 298 K(TOF=89.56 molH_(2) min^(-1) molCo^(-1)).Experiments and density functional theory calculations were performed to explore the catalyst’s hybrid nanoparticle heterostructure and its catalytic mechanism.The catalyst comprised nitrogen-doped carbon dots confining CoO and CoP,and exhibited strong interface-induced synergistic catalysis for AB hydrolysis that effectively decreased the energy barriers for the dissociation of both AB and water molecules.The co-doping of N and P introduced numerous defects,and further regulated the reactivity of the carbon layers.The heterogeneous interface design technique presented here provides a new strategy for developing efficient and inexpensive non-noblemetal catalysts that may be applicable in other fields related to energy catalysis.

关 键 词：Nano-heterostructure Interface engineering Ammonia borane Hydrolysis mechanism Hydrogen 

分 类 号：TQ116.2[化学工程—无机化工] TQ426