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.
作者
金惠东
顾银冬
连跃彬
薛松林
房媛媛
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)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
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。
