Manganese�?�Schiff base complex immobilized silica materials for electrocatalytic oxygen reduction

Bulletin of materials science

Manas Pal¹  Vellaichamy Ganesan¹  Manoj Tiwari¹ 

[1] Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India$$Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, IndiaDepartment of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India$$

关键词: Oxygen reduction;    electrocatalysis;    MCM-41 type material.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Curtailment of platinum catalysts loading in fuel cell is a recent central issue. As substitutes, these days several organic metal chelate compounds having featured moieties of Mâ€�?�N₄ or Mâ€�?�N₂O₂ (M = transition metal ion) are being used as cathode catalysts in fuel cells. Here, in this study, we report in detail the electrocatalytic activity of manganeseâ€�?�Schiff base complexes for oxygen reduction reaction in 0.05 M HClO₄ at room temperature. Actually, [Mn(salen)]⁺: [N,Nâ€�?-bis(salicylaldehyde) ethylenediimino manganese(III)]⁺ and [Mn(salophen)]⁺: [N,Nâ€�?-bis(salicylaldehyde)-1,2-phenylenediimino manganese(III)]⁺ were introduced into/onto the MCM-41 type silica spheres and used for the electrocatalytic reduction of oxygen. Synthesized materials were characterized by UVâ€�?�Vis, FTâ€�?�IR and electrochemical techniques. Significant low overpotential for oxygen reduction in 0.05 M HClO₄ on [Mn(salen)]⁺- and [Mn(salophen)]⁺-incorporated silica-modified glassy carbon electrodes was observed.

【 授权许可】

Unknown