Graphitizing N-doped mesoporous carbon nanospheres via facile single atom iron growth for highly eff

• 作 者: Yunshi Xu Liping Zhu Xuexue Cui Mingyu Zhao Yaling Li Leilei Chen Weicun Jiang Ting Jiang Shuguang Yang Yi Wang
• 机 构: Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fiber
• 出 处: 纳米研究（英文版）
• 发表日期: 2020年3期
• 关键词: single atom mesoporous structure graphitic carbon nanosphere in-situ transformat

Single atom catalyst is of great importance for the oxygen reduction reaction (ORR).However,facile preparation of single atom catalyst without using well-designed precursors or labor-intensive acid leaching remains an urgent challenge.Herein,a simple pyrolysis of Fe3+-loaded mesoporous phenolic resin (mPF)-melamine precursor is used to prepare the single atom iron-anchored N-doped mesoporous graphitic carbon nanospheres (Fe/N-MGN).Investigation of the synthesis reveals the appropriate Fe-assisted catalysis effect and mPF template effect,which not only spurs the highly graphitic porous framework of Fe/N-MGN with plentiful pyridinic N/graphitic N,but also assures the dispersed single atom Fe anchoring without elaborated procedures.As a result,the as-synthesized Fe/N-MGN demonstrates high catalytic activity,good durability and excellent methanol tolerance for ORR.This work promises a facile method to regulate the graphitic carbon growth and single atom Fe loading for the highly efficient electrocatalysis.