二硫桥键钴卟啉二聚体的合成与电催化氧还原性能  

Disulfide-Bridged Dimeric Cobalt Porphyrin:Synthesis and Electroreduction of Dioxygen

作　　者：金惠东 顾银冬 连跃彬 薛松林 房媛媛[3] 邓昭 坂本雅典 寺西利之 彭扬 JIN Hui-Dong;GU Yin-Dong;LIAN Yue-Bin;XUE Song-Lin;FANG Yuan-Yuan;DENG Zhao;Sakamoto Masanori;Teranishi Toshiharu;PENG Yang(College of Energy,Soochow Institute for Energy and Materials InnovationS,Soochow University,Suzhou,Jiangsu 215006,China;Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies,Suzhou,Jiangsu 215006,China;School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China;Institute for Chemical Research,Kyoto University,Gokasho,Uji,Kyoto 611-0011,Japan)

机构地区：[1]苏州大学能源学院,能源与材料创新研究院,苏州215006 [2]江苏省先进碳材料与可穿戴能源技术重点实验室,苏州215006 [3]江苏大学化学化工学院,镇江212013 [4]京都大学化学所,京都611-0011,日本

出　　处：《无机化学学报》2020年第12期2377-2384,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21701118);江苏省高等学校自然科学研究面上资助项目(No.18KJA480004);中国博士后科学基金面上项目(No.2019M661917);江苏省高等教育优势学科资助。

摘　　要：成功合成了二硫桥键相连的钴卟啉二聚体2Co。通过循环伏安电化学方法测试,在无水二氯甲烷溶剂中,钴卟啉二聚体展示了3个氧化和2个还原峰,表明此钴卟啉二聚体可以稳定多重负/正电荷。详细研究了在酸性条件下的钴卟啉二聚体的电催化氧还原性能。钴卟啉二聚体的电催化氧还原显示了高稳定性和高活性,测得转移电子数为3.5~3.6之间。钴卟啉二聚体的电催化氧还原性能说明通过二硫键对钴卟啉单体二聚化可以提高钴卟啉的电催化氧还原性能。A disulfide-bridged dimeric cobalt porphyrin 2Co has been successfully synthesized.The cyclic voltammogram(CV)curves of 2Co exhibited three oxidation and two reduction potentials in CH2Cl2,indicating that the 2Co enable stabilizing multi-negative and positive charges.The ORR catalytic property of 2Co in acid media were investigated.The reduction of O2 using the dimer 2Co as catalyst showed high stability and activity to give the higher the value of transferred electrons number(n)between 3.5 and 3.6 under dioxygen.The catalytic performance of 2Co indicates that dimerization of cobalt porphyrins have a slightly positive influence on the catalytic properties for oxygen reduction reactions(ORRs)in the acidic medium.

关 键 词：钴卟啉 二聚体 氧气 电催化还原 

分 类 号：O614.812[理学—无机化学]