Fabrication of monodispersed B,N co-doped hierarchical porous carbon nanocages through confined etching to boost electrocatalytic oxygen reduction
作者机构：School of Civil&Environmental EngineeringUniversity of Technology SydneySydneyNSW2007Australia State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China DICP-Surrey Joint Centre for Future MaterialsUniversity of Surrey GuildfordSurreyGU27XHUK
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第1期
页 面：290-298页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：We acknowledge support under the Australian Research Council’s Future Fellowship(No.FT190100658,Z.H.) support from the Alexander von Humboldt Foundation(Z.H.).X.W.also acknowledges the Chinese Scholarship Council(CSC)for financial support
主 题：heteroatom doping hierarchical porous carbon host-guest chemistry confined etching electrocatalysis mass transfer
摘 要：Dual heteroatom-doped carbons have attracted widespread research attention as catalysts in the field of energy storage and conversion due to their unique electronic structures and chemical *** particular,boron and nitrogen co-doped carbon(B,N@C)has shown great potential for photo/electrocatalytic ***,more needs to be done for rational designing and regulating the structure of these materials to improve their catalytic ***,monodispersed hierarchical porous B,N@C nanocages were fabricated by pyrolyzing zeolite imidazole framework(ZIF)which was treated with ammonia borane or boric acid via an integrated double-solvent impregnation and nanocofined-etching *** treated ZIF-8 provided an essential structural template to achieve B,N co-doped hierarchical structures with micro/meso/macro multimodal pore size *** resultant B,N@C nanocages displayed high catalytic activities for electrochemical oxygen reduction reaction(ORR)in alkaline media,outperforming most carbon-based catalysts,particularly from the perspective of the half-wave *** high catalytic performance is due to the enhanced activity by the coexistence of B and N and the mass transfer promoted by the unique hierarchical porous structure.
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