Co3 O4 Hexagonal Platelets with Controllable Facets Enabling Highly Efficient Visible-Light Photocatalytic Reduction of CO2

Chao Gao; Qiangqiang Meng; Kun Zhao; Huajie Yin; Dawei Wang; Jun Guo; Shenlong Zhao; Lin Chang; Meng He; Qunxiang Li; Huijun Zhao; Xingjiu Huang; Yan Gao; Zhiyong Tang

doi:10.1002/adma.201601387

Co3 O4 Hexagonal Platelets with Controllable Facets Enabling Highly Efficient Visible-Light Photocatalytic Reduction of CO2

Adv Mater. 2016 Aug;28(30):6485-90. doi: 10.1002/adma.201601387. Epub 2016 May 12.

Authors

Chao Gao^{1

2}, Qiangqiang Meng³, Kun Zhao¹, Huajie Yin¹, Dawei Wang¹, Jun Guo¹, Shenlong Zhao¹, Lin Chang¹, Meng He¹, Qunxiang Li³, Huijun Zhao⁴, Xingjiu Huang², Yan Gao¹, Zhiyong Tang¹

Affiliations

¹ CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
² Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Physical Sciences, Chinese Academy of Sciences, Hefei, 230031, P. R. China.
³ Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
⁴ Centre for Clean Environment and Energy, Gold Coast Campus, Griffith University, Queensland, 4222, Australia.

PMID: 27171564
DOI: 10.1002/adma.201601387

Abstract

A heterogeneous catalyst made of well-defined Co3 O4 hexagonal platelets with varied exposed facets is coupled with [Ru(bpy)3 ]Cl2 photosensitizers to effectively and efficiently reduce CO2 under visible-light irradiation. Systematic investigation based on both experiment and theory discloses that the exposed {112} facets are crucial for activating CO2 molecules, giving rise to significant enhancement of photocatalytic CO2 reduction efficiency.

Keywords: CO2 reduction; cobalt oxide; heterogeneous catalysis; photocatalysis; solar fuel.