文献类型：期刊文献

英文题名：Boosting electrochemical conversion of CO2 to ethanol through the confinement of pyridinic N-B layer on copper nanoparticles

作者：Zhao, Yuying[1,2,3] Yuan, Qixin[2] Xu, Ruting[1] Zhang, Chenhao[4] Sun, Kang[1] Wang, Ao[1] Zhang, Anqi[5] Wang, Ziyun[3] Jiang, Jianchun[1,2] Fan, Mengmeng[1,2]

第一作者：Zhao, Yuying

机构：[1] Key Lab of Biomass Energy and Material, Jiangsu Province, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042, China; [2] Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China; [3] School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand; [4] Shanghai Key Laboratory of Rare Earth Functional Materials and Education Ministry Key Laboratory of Resource Chemistry, Shanghai Normal University, Shanghai, 200234, China; [5] School of Chemical Engineering, Tianjin University, Tianjin, 30072, China

年份：2024

卷号：355

外文期刊名：Applied Catalysis B: Environmental

收录：EI(收录号：20242016082518);Scopus(收录号：2-s2.0-85193020566)

语种：英文

外文关键词：Carbon - Copper - Density functional theory - Electrocatalysts - Electrolytes - Electrolytic reduction - Ethanol - Nanoparticles - Nanoribbons - Potassium compounds

摘要：Developing efficient electrocatalysts for CO2 reduction has gained significant attention in the field of sustainable energy, especially the Cu-based catalysts for CO2 conversion to valuable alcohols. In this study, we developed Cu nanoparticles supported on pyridinic N-B doped graphene nanoribbons/amorphous carbon (Cu/BNC-1) as an electrocatalyst for CO2 reduction, exhibiting substantially improved ethanol (EtOH) conversion rate in terms of activity, selectivity, and stability. The Cu/BNC-1 achieved a remarkable 58.64 % Faradaic efficiency (FE) for producing EtOH at ?1.0 V vs. RHE with a current density of 20.4 mA cm?2 in 0.5 M KHCO3 electrolyte. In-situ Raman, FT-IR, and density functional theory (DFT) calculations demonstrated that the high C2+ product selectivity of Cu/BNC-1 attributed to the pyridinic N-B modulation, lowering the CO dimerization barrier. Moreover, the synergistic confinement effect of Cu and BNC can stabilize the C-O bond of the *HOCCH intermediate, thereby increasing the yield of EtOH. ? 2024 The Authors