Photocatalytic reduction of carbon dioxide to methanol using a ruthenium trinuclear polyazine complex immobilized on graphene oxide under visible light irradiation

• DOI: 10.1039/c4ta01494d
• Publication Date: 2014-04-17T13:33:50Z
• Authors: Pawan Kumar; Bir Sain; Suman L. Jain
• Keywords: Triethylamine

A ruthenium trinuclear polyazine complex was synthesized and subsequently immobilized through complexation to a graphene oxide support containing phenanthroline ligands (GO-phen). The developed photocatalyst used for the photocatalytic reduction of CO2 methanol, using 20 watt white cold LED flood light, in dimethyl formamide–water mixture triethylamine as reductive quencher. After 48 h illumination, yield methanol found be 3977.57 ± 5.60 μmol gcat−1. exhibited higher activity than oxide, which provided 2201.40 8.76 reaction, catalyst easily recovered reused four subsequent runs without significant loss catalytic no leaching metal/ligand detected during reaction.