金属卟啉/多壁碳纳米管复合材料的电催化析氢反应  

Metalloporphyrin/Multi-walled Carbon Nanotubes Composites for Electrocatalytic Hydrogen Evolution Reaction

作　　者：刘兆镇 姚燕芳 房坤 吕昀叡 叶勇 刘海洋 LIU Zhaozhen;YAO Yanfang;FANG Kun;LYU Yunrui;YE Yong;LIU Haiyang(School of Chemistry and Chemical Eengineering,Key Laboratory of Fuel Cell Technology of Guangdong Province,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学化学与化工学院,广东省燃料电池技术重点实验室,广州510641

出　　处：《高等学校化学学报》2025年第5期131-139,共9页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21671068)资助.

摘　　要：制备了过渡金属(Co,Cu,Mn,Ni,Fe)的5,10,15,20-四苯基卟啉(TPP)配合物,并通过非共价相互作用制得了金属卟啉/多壁碳纳米管(MTPP/MWCNTs)电催化析氢反应(HER)复合材料.结果表明,当金属卟啉的负载量(质量分数)为10%时,复合材料CoTPP/MWCNTs的电催化析氢性能最佳.紫外-可见漫反射光谱(UV-Vis DRS)和X射线光电子能谱(XPS)结果显示,金属卟啉与多壁碳纳米管之间存在较强的π-π相互作用.MTPP/MWCNTs复合材料的催化活性顺序为Co>Cu>Mn>Ni>Fe.其中,CoTPP/MWCNTs在电流密度为10 mA/cm2时的过电位为631 mV,并且具有最小的Tafel斜率(161.3 mV/dec)和电荷转移电阻(10.3Ω).本文研究表明金属卟啉与多壁碳纳米管的非共价结合是构建复合材料电催化剂的一条有效途径.In this paper,5,10,15,20-tetraphenylporphyrin(TPP)complexes of transition metals(MTPP,M=Co,Cu,Mn,Ni,Fe)were prepared and the metalloporphyrin/multi-walled carbon nanotubes composites(MTPP/MWCNTs)for electrocatalytic hydrogen evolution reaction(HER)were fabricated by non-covalent interactions.The results showed that the composite CoTPP/MWCNTs exhibited the best electrocatalytic HER performance when the loading amount(mass fraction)of metalloporphyrin was 10%.The ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS)and X-ray photoelectron spectroscopy(XPS)results showed that there are strongπ-πinteractions between the metalloporphyrin and the multi-walled carbon nanotubes.The catalytic activities of MTPP/MWCNTs follows the order of Co>Cu>Mn>Ni>Fe.Among them,the CoTPP/MWCNTs shows an overpotential of 631 mV at the current density of 10 mA/cm2,the smallest Tafel slope(161.3 mV/dec)and charge transfer resistance(10.3Ω),suggesting the utilization of the non-covalent combination of metalloporphyrin with multi-walled carbon nanotubes is an effective way to construct composite electrocatalysts.

关 键 词：金属卟啉 多壁碳纳米管 非共价结合 电催化 析氢反应 

分 类 号：O646.5[理学—物理化学]