Polyoxometalate Cluster Sensitized with Copper-Viologen Framework for Efficient Degradation of Organic Dye in Ultraviolet, Visible, and Near-Infrared Light

An efficient photocatalyst based
on the broadband solar response molecular system was designed and
constructed for pollutant degradation in near-neutral conditions via
utilizing guest polyoxometalate cluster sensitized with electron deficient
host network. Photoelectrochemical analysis reveals electron–hole
pairs are generated efficiently upon both visible and NIR light excitation.
Its photocatalytic activity in the visible and NIR light regions is
enhanced because of the contribution from the broad absorption of
copper-viologen framework and the strong host–guest interactions.
This stable heterogeneous catalyst is easily recollected and regenerated
without the loss of activity for the next cycle.