Jump to main content
Jump to site search


Hexanuclear Cobalt Metal–Organic Framework for Efficient CO2 Reduction under Visible Light

Abstract

Increasing global challenges including climate warming and energy shortage have stimulated worldwide explorations of efficient materials for applications in capture of CO2 and conversion it to chemicals. In this study, a novel pillared-layer porous metal–organic framework (Co6-MOF) with high nuclearity CoII clusters has been synthesized. This material exhibited CO2 adsorption capacity up to 55.24 cm3g-1 and 38.17 cm3g-1 at 273 K and 298 K, respectively. In a heterogeneous photocatalytic system of CO2 reduction, this material, cooperated with a ruthenium-based photosensitizer, can efficiently realize CO2 to CO conversion. Under visible-light irradiation for 3 hours, 39.36 μmol CO and 28.13 μmol H2 was obtained. This result is higher than most of reported MOF materials under similar condition and to the best of known, this is the first example of high nuclear MOF used in CO2 reduction. Rooted reasons behind the high reactivity were studied through theoretic calculation studies. Results showed electrons on reduced [Ru(bpy)3]Cl2.6H2O (bpy = 4,4'-bipyridine) could transfer to Co6-MOF and adsorbed CO2 molecule on charged Co6-MOF could be activated more facilely. This work not only clarifies the reasons for high efficiency in CO2 photoreduction system but also points out the direction for us in designing more effective MOF materials as photocatalysts for artificial CO2 photoreduction.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 24 Mar 2017, accepted on 13 May 2017 and first published on 15 May 2017


Article type: Paper
DOI: 10.1039/C7TA02611K
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
  •   Request permissions

    Hexanuclear Cobalt Metal–Organic Framework for Efficient CO2 Reduction under Visible Light

    J. Zhao, Q. Wang, C. Sun, T. T. zheng, L. Yan, M. Li, K. Shao, X. Wang and Z. Su, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA02611K

Search articles by author