Site Isolation Leads to Stable Photocatalytic Reduction of CO2 over a Rhenium-Based Catalyst

Weibin Liang; Tamara L Church; Sisi Zheng; Chenlai Zhou; Brian S Haynes; Deanna M D'Alessandro

doi:10.1002/chem.201502796

Site Isolation Leads to Stable Photocatalytic Reduction of CO2 over a Rhenium-Based Catalyst

Chemistry. 2015 Dec 14;21(51):18576-9. doi: 10.1002/chem.201502796. Epub 2015 Nov 5.

Authors

Weibin Liang¹, Tamara L Church^{1

2}, Sisi Zheng², Chenlai Zhou², Brian S Haynes², Deanna M D'Alessandro³

Affiliations

¹ School of Chemistry, The University of Sydney, Sydney NSW 2006 (Australia).
² School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney NSW 2006 (Australia).
³ School of Chemistry, The University of Sydney, Sydney NSW 2006 (Australia). deanna.dalessandro@sydney.edu.au.

PMID: 26538203
DOI: 10.1002/chem.201502796

Abstract

A porous organic polymer incorporating [(α-diimine)Re(CO)3Cl] moieties was produced and tested in the photocatalytic reduction of CO2, with NEt3 as a sacrificial donor. The catalyst generated both H2 and CO, although the Re moiety was not required for H2 generation. After an induction period, the Re-containing porous organic polymer produced CO at a stable rate, unless soluble [(bpy)Re(CO)3Cl] (bpy=2,2'-bipyridine) was added. This provides the strongest evidence to date that [(α-diimine)Re(CO)3Cl] catalysts for photocatalytic CO2 reduction decompose through a bimetallic pathway.

Keywords: carbon dioxide; photocatalysis; porous organic polymers; reduction; rhenium.

Publication types

Research Support, Non-U.S. Gov't