Single-atom catalysts based on two-dimensional metalloporphyrin monolayers for ammonia synthesis under ambient conditions  

作　　者：Chun-Xiang Huang Sheng-Yao Lv Cong Li Bin Peng Guoliang Li Li-Ming Yang 

机构地区：[1]Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica,Key Laboratory of Material Chemistry for Energy Conversion and Storage,Ministry of Education,Hubei Key Laboratory of Materials Chemistry and Service Failure,Hubei Engineering Research Center for Biomaterials and Medical Protective Materials,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [2]Key Laboratory of Theoretical Chemistry of Environment,Ministry of Education,Center for Computational Quantum Chemistry,School of Chemistry,South China Normal University,Guangzhou 510006,China

出　　处：《Nano Research》2022年第5期4039-4047,共9页纳米研究（英文版）

基　　金：C.-X.H.,S.-Y.L.,C.L.,and L.-M.Y.gratefully acknowledge support from the National Natural Science Foundation of China(Nos.22073033,21873032,21673087,and 21903032);the startup fund(Nos.2006013118 and 3004013105)from Huazhong University of Science and Technology,the Fundamental Research Funds for the Central Universities(No.2019kfyRCPY116);the Innovation and Talent Recruitment Base of New Energy Chemistry and Device(B21003);C.-X.H.,S.-Y.L.,and G.-L.L.gratefully acknowledge support from Guangdong Basic and Applied Basic Research Foundation(No.2021A1515010382).

摘　　要：We systematically investigated the catalytic performance of 3d,4d,and 5d transition metals anchored onto two-dimensional extended porphyrin(PP)substrates as nitrogen reduction reaction(NRR)electrocatalysts,employing density functional theory(DFT)calculations and four-step high-throughput screening.Four novel metalloporphyrin(MPP,M=Zr,Nb,Hf,and Re)single-atom catalyst candidates have been identified due to their excellent catalytic performance(low onset potential,high stability,and selectivity).Through comprehensive reaction path search,the maximum Gibbs free energy changes for NRR on the ZrPP(enzymatic-consecutive hybrid path),NbPP(consecutive path),HfPP(enzymatic-consecutive hybrid path),and RePP(distal path)catalysts are 0.38,0.41,0.53,and 0.53 eV,respectively.Band structures,projected density of states,and charge/spin distributions show that the high catalytic activity is due to significant orbital hybridizations and charge transfer between N_(2) and MPP catalysts.We hope our work will promote experimental synthesis of these NRR electrocatalysts and provide new opportunities to the electrochemical conversion of N_(2) to NH_(3) under ambient conditions.

关 键 词：electrocatalytic nitrogen reduction reaction two-dimensional(2D)extended metalloporphyrin(MPP)monolayer singleatom catalyst two-dimensional materials high-throughput screening first-principles calculations 

分 类 号：O64[理学—物理化学]