Layered Co-O Cluster Applied to Photocatalytic CO Reduction.

In the field of recycling CO, the photocatalytic CO reduction reaction (CORR) is a typical example, and researchers have designed a variety of photocatalysts to improve the conversion rate of CO over the years. In this paper, two metal-oxygen clusters are designed and formulated as [CoZn(OH)(SO)]·4HO () and [NiZn(OH)(SO)]·4HO (). As for compound , the main structure is composed of {CoO} octahedra connected by edge-sharing to form a two-dimensional layer, on which {ZnO} and {SO} tetrahedra are supported. More interestingly, compound has outstanding photocatalytic activity, which is mainly attributed to the open-framework structure and the cobalt ions as active sites. Upon catalysis for eight hours, its maximum CO generation rate is 9982.13 μmol g h, with a selectivity of 81.8%. Additionally, compound takes on weak antiferromagnetic coupling due to Co(II) ions.