学术讲座

报告题目：Mass-transport Effects in Electrocatalysis

报告时间：2025-04-30 10:30

报告人： Alexander V. Rudnev  研究员

A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (RAS), Russia

报告地点：翔安校区嘉庚实验室3号楼报告厅

转播地点：思明校区化四112教室，漳州校区生化主楼307教室

报告摘要：

Mass-transport limitations are a critical factor to consider when studying the kinetics of electrochemical processes and comparing the activity of different catalysts. This is especially true in studies involving dispersed, rough, and/or porous catalysts, and when low concentrations of reactants are used. While a high surface concentration of active sites is often a key criterion for efficient catalysis, in mass transport-limited reactions, the observed current densities may not accurately reflect the intrinsic catalytic activity of a material. Instead, they often represent the extent of surface dispersion. The electrooxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) serves as an excellent case study to highlight the influence of solution composition on optimizing conversion. Among biomass-derived compounds, HMF is a promising platform chemical for producing value-added products—particularly FDCA, a crucial precursor for bio-based polyethylene furanoate (PEF) plastics. This electrocatalytic transformation has gained attention as a green and efficient alternative to conventional anode reactions in power-to-value electrolyzer systems. The study focuses on the pivotal role of alkalinity and the OH⁻/HMF concentration ratio in determining the performance of NiOOH-based electrocatalysts for the electrochemical oxidation of HMF under mass-transport-limited conditions.

报告人简介：

亚历山大·V·鲁德涅夫博士（Dr. Alexander V. Rudnev），现任俄罗斯科学院弗鲁姆金物理化学与电化学研究所（RAS）首席科学家，兼任伯尔尼大学化学、生物化学与药学系研究员。他于2007年获俄罗斯科学院电化学方向博士学位，研究方向为金属在单晶电极表面的电化学成核与表面结构表征；2004年以优异成绩获得莫斯科门捷列夫化工大学电化学生产技术专业工程师学位。

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