School of Materials Science and Engineering China University of Petroleum(East China) Qingdao 266580 Shandong China;
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry University of Science and Technology Beijing Beijing 100083 China;
School of Materials Science and Engineering China University of Petroleum(East China) Qingdao 266580 Shandong ChinaBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry University of Science and Technology Beijing Beijing 100083 China;
Porphyrin iron polymer; Corncob; Fe2O3; Biomass carbon; Oxygen reduction reaction;