Metal oxide and modified metal oxides have been widely used for dye degradation/photocatalysis. But what about metal nanoparticles, would they be able to degrade the dye?
Yes, metal nanoparticles have the ability to generate the reactive oxygen species (ROS) including hydroxyl, superoxide, singlet oxygen and hydrogen peroxide. These species have been widely recognised as the oxidation contributors. The discussion point is Au and Ag, stability concerns give priority to the Au over Ag because Ag is inevitable to oxidative dissolution to produce its oxide species while Au is stable over a wider pH range.
posible
http://iopscience.iop.org/article/10.1088/1755-1315/105/1/012018/pdf
Yes it is possible with metal nanoparticles. Now the question is whether you want to use metal particles as photocatalysts or simply as catalysts for borohydride reduction of dyes.
For borohydride reduction in the presence of Ag and AuNPs, look at the following publications
1) https://link.springer.com/article/10.1007/s13204-017-0589-4
2) https://www.sciencedirect.com/science/article/pii/S0959652618320559.
And for photocatalytic degradation of dye see following publication
1) https://pubs.acs.org/doi/abs/10.1021/acsanm.8b00272
Yes, metal nanoparticles have the ability to degrade dyes. See the attachment.
Yes，but they’re usually used as co-catalysts to improve the photocatalytic activity of semiconductor catalysts.
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