Studies on photocatalytic CO(2) reduction over NH2 -Uio-66(Zr) and its derivatives: towards a better understanding of photocatalysis on metal-organic frameworks

Dengrong Sun; Yanghe Fu; Wenjun Liu; Lin Ye; Dengke Wang; Lin Yang; Xianzhi Fu; Zhaohui Li

doi:10.1002/chem.201301728

Studies on photocatalytic CO(2) reduction over NH2 -Uio-66(Zr) and its derivatives: towards a better understanding of photocatalysis on metal-organic frameworks

Chemistry. 2013 Oct 11;19(42):14279-85. doi: 10.1002/chem.201301728. Epub 2013 Sep 3.

Authors

Dengrong Sun¹, Yanghe Fu, Wenjun Liu, Lin Ye, Dengke Wang, Lin Yang, Xianzhi Fu, Zhaohui Li

Affiliation

¹ Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002 (P. R. China).

PMID: 24038375
DOI: 10.1002/chem.201301728

Abstract

Metal-organic framework (MOF) NH2 -Uio-66(Zr) exhibits photocatalytic activity for CO2 reduction in the presence of triethanolamine as sacrificial agent under visible-light irradiation. Photoinduced electron transfer from the excited 2-aminoterephthalate (ATA) to Zr oxo clusters in NH2 -Uio-66(Zr) was for the first time revealed by photoluminescence studies. Generation of Zr(III) and its involvement in photocatalytic CO2 reduction was confirmed by ESR analysis. Moreover, NH2 -Uio-66(Zr) with mixed ATA and 2,5-diaminoterephthalate (DTA) ligands was prepared and shown to exhibit higher performance for photocatalytic CO2 reduction due to its enhanced light adsorption and increased adsorption of CO2 . This study provides a better understanding of photocatalytic CO2 reduction over MOF-based photocatalysts and also demonstrates the great potential of using MOFs as highly stable, molecularly tunable, and recyclable photocatalysts in CO2 reduction.

Keywords: carbon dioxide fixation; metal-organic frameworks; photochemistry; reduction; zirconium.