文献类型：期刊文献

英文题名：Boron-Doped Biomass Carbon Nanostructures as Electrocatalysts for the Two-Electron Oxygen Reduction Reaction

作者：Xu, Xiang[1] Xu, Ruting[2] Zhao, Yuying[2,3] Wu, Yuhan[1] Yuan, Qixin[1] Sun, Kang[2] Hu, Shengchun[2] Jiang, Jianchun[1,2] Fan, Mengmeng[1,2]

第一作者：Xu, Xiang

通信作者：Fan, MM[1];Hu, SC[2];Fan, MM[2]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Univ Auckland, Sch Chem Sci, Auckland 1010, New Zealand

年份：2024

卷号：7

期号：16

起止页码：18912-18919

外文期刊名：ACS APPLIED NANO MATERIALS

收录：;EI(收录号：20243216847371);Scopus(收录号：2-s2.0-85200642776);WOS:【SCI-EXPANDED(收录号:WOS:001285528900001)】；

基金：This work was supported by the Key Laboratory of Biomass Energy and Material, Jiangsu Province (JSBEM-S-202315), the National Natural Science Foundation of China (no. 32371810), the Foundation Research Project of Jiangsu Province (BK20221338), the China Postdoctoral Science Foundation (no. 2023M731702), the Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, the International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, and the merit-based funding for Nanjing innovation and technology project.

语种：英文

外文关键词：two-electron oxygen reduction reaction; B atom dopant; biomass carbon; flash Joule heating; electrocatalyst

摘要：Highly active B atom dopants were successfully introduced into a biomass carbon matrix as promising electrocatalysts for the two-electron oxygen reduction reaction (2e(-) ORR) to synthesize hydrogen peroxide (H2O2) by decomposing boron nanosheets with flash Joule heating (FJH) progress. Moreover, the FJH process can greatly improve the graphitization of biomass carbon leading to rapid electron transfer during electrocatalysis. The as-prepared B atom-doped carbon nanomaterial (f-B-s-C) showed greatly enhanced 2e(-) ORR performance with outstanding H2O2 selectivity (91-94%) at 0.25-0.6 V vs reversible hydrogen electrode (RHE) measured via a rotating ring-disk electrode (RRDE) in an alkaline electrolyte, and the Faradaic efficiency was still greater than 80% during 11 h with a mass activity of 798 mmol g(catalyst)(-1) h(-1) in an actual three-electrode flow cell setup. The overall catalytic performance is preferable to the majority of reported carbon-based catalysts. Density functional theory showed that the O atom connected with B atoms can induce charge density deficiency on the B site acting as high catalytic sites. This research provides an exploration to fabricate heteroatom dopants to enhance the catalytic capability of biomass-based carbon catalysts.