Confined pyrolysis of single-molecule hemin anchored in the cages of zeolite imidazole frameworks toward oxygen reduction reaction - Zihui Zhai; Rui Gao; Li Yang; Qiunan Liu; Ruonan Zheng; Jia Li; Ruijie Song; Junhu Wang; Zhaoxia Hou; Jianyu Huang; Weiqiao Deng; Yujiang Song (Chemical Engineering Journal, 2026)