Functionalized silica materials for electrocatalysis

Journal of Chemical Sciences

Vellaichamy Ganesan1¹ 

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

关键词: Functionalized silica;    electrocatalysis;    metal nanoparticles;    oxygen reduction;    carbon dioxide reduction;    nitrite reduction.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Electrocatalysis is an important phenomenon which is utilized in metal–air batteries, fuel cells, electrochemical sensors, etc. To increase the efficiency of the electrocatalytic process and to increase the electrochemical accessibility of the immobilized electrocatalysts, functionalized and non-functionalized mesoporous organo-silica (MCM41-type-materials) are used in this study. These materials possess several suitable properties to be durable catalysts and/or catalyst supports. Owing to the uniform dispersion of electrocatalysts (metal complex and/or metal nanoparticles (NPs)) on the functionalized and non-functionalized silica, an enormous increase in the redox current is observed. Long range channels of silica materials with pore diameter of 15–100 Å allowed metal NPs to accommodate in a specified manner in addition to other catalysts. The usefulness of MCM-41-type silica in increasing the efficiency of electrocatalysisis demonstrated by selecting oxygen, carbon dioxide and nitrite reduction reactions as examples

【 授权许可】

Unknown