文献类型：期刊文献

英文题名：Ternary N, P, B-doped wood-derived carbon electrocatalyst for selective CO2 reduction to methane

作者：Wu, Bingshen[1,2] Lao, Yufei[1,2] He, Liufang[1,2] Liao, Junqi[1,2] Xu, Jinmei[3] Guo, Chuigen[1,2] Li, Liping[1,2]

第一作者：Wu, Bingshen

通信作者：Li, LP[1];Xu, JM[2]

机构：[1]South China Agr Univ, Guangdong Engn Technol Res Ctr Agr & Forestry Biom, Key Lab Energy Plants Resource & Utilizat, Minist Agr & Rural Affairs, Guangzhou 510642, Peoples R China;[2]South China Agr Univ, Coll Mat & Energy, Key Lab Biobased Mat & Energy, Minist Educ, Guangzhou 510642, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2026

卷号：324

外文期刊名：MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

收录：;EI(收录号：20254719541038);Scopus(收录号：2-s2.0-105022098009);WOS:【SCI-EXPANDED(收录号:WOS:001626193000001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (32471785 and 32371806) and the National Important Research Program of China (2023YFF0613802) , and the Opening Project of Key Laboratory of Energy Plants Resource and Uti-lization, Ministry of Agriculture and Rural Affairs, and Guangdong En-gineering Technology Research Center for Agricultural and Forestry Biomass, South China Agricultural University, Guangzhou, China (IBE2024D06) .

语种：英文

外文关键词：Porous carbons; Metal-free doping; Carbonized wood; CO 2 electroreduction; Methane selectivity

摘要：Addressing the urgent need for efficient, low-cost alternatives to noble-metal catalysts for selective CO2-to-fuel conversion, this work develops a high-performance metal-free ternary (N, P, B)-doped wood-derived porous carbon electrocatalyst from chitosan, phosphoric acid, and boric acid (CSPB) synthesized by vacuum impregnation and controlled carbonization. The catalyst exhibits a unique 3D hierarchical porous architecture with uniformly distributed mesopores, and abundant homogeneously dispersed active sites (pyridinic -N, P-N, B-N bonds). Crucially, this synergistic integration of multi-element doping (N, P, B) within the precisely engineered 3D porous network significantly enhances CO2 adsorption/activation and facilitates proton-coupled electron transfer kinetics at the catalyst-electrolyte-CO2 triple-phase interface. Remarkably, the CSPB catalyst achieved a Faradaic efficiency (FE) for CH4 exceeding 63 % with an exceptional partial current density of 28.88 mA cm-2 at a potential of -1.78 V (vs. RHE), significantly outperforming most reported metal-free carbon-based CO2RR electrocatalysts. Systematic characterizations and control experiments unequivocally identify pyridinic-N, P-N bonds, and B-N bonds served as critical active sites centers driving the selective CO2-to-CH4 conversion. This work establishes a new paradigm of synergistic combination of heteroatom coordination and 3D pore-structure manipulation for multi-electron CO2 reduction, while elucidating the mechanism by which synergistic multielement doping and three-dimensional porous structures enhance catalytic performance. These findings offer valuable insights for advancing CO2RR electrocatalytic systems.