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Article Abstract
The selective reduction of molecular oxygen to superoxide is one of the key reactions in electrochemistry and photocatalysis. Here the effect of Pt co-catalysts, dispersed on titania, either as single atoms or as nanoparticles, on the photocatalytic superoxide (O ) formation in O containing solutions is investigated. The O formation is traced by nitroblue tetrazolium (NBT) assays and in detail by EPR measurements using TEMPO as O radical scavenger. The results show that the photocatalytic formation rate of O on titania can strongly be enhanced by using Pt single atoms as a co-catalyst, whereas Pt nanoparticles hardly exhibit any accelerating effect. This finding is of considerable significance regarding photocatalytic degradation and photocatalytic oxidative synthesis processes.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11922030 | PMC |
| http://dx.doi.org/10.1002/smll.202412097 | DOI Listing |
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