−) 6 and nonradical species (i.e., 1O 2, high-valence metals and metals–PMS complex) 7, 8.The initial step for persulfates activation is to achieve electron transfer through the adsorption of persulfates on the metal center 5, and then generate reactive species, including radicals (i.e., O 2

At present, the discharge of non-biodegradable organic pollutants has caused severe water pollution, and Fenton-like process based on persulfates (i.e, peroxydisulfate (PDS) and peroxymonosulfate (PMS)) have received extensive attention in water treatment 3, 4. As an indispensable basic resource and an important environmental carrier, the importance of water resources has been increasingly demonstrated. Density functional theory and X-ray absorption spectroscopy show that the optimized structural distortion enhanced the metal-oxygen bond strength by tuning the e g orbitals and increased the number of transferred electrons to peroxymonosulfate by about 3-fold, achieving excellent efficiency and stability in removing organic pollutants.įaced with excessive fossil fuel consumption as well as the associated environmental issues, the implementation of carbon neutrality to control global warming in the Paris Climate Agreement is urgently demanded 1, 2.

− from persulfate on the Co active site.

This process effectively promotes the generation of key SO 5* intermediates, which is beneficial to the formation of 1O 2 and SO 4 Herein, we capture the dynamic changes in the unit cell of Co/La-SrTiO 3 catalyst during the exemplary peroxymonosulfate activation process using X-ray absorption spectroscopy and in situ Raman spectroscopy, revealing the substrate tuned its structural evolution, which is the reversible stretching vibration of O-Sr-O and Co/Ti-O bonds in different orientations.

In heterogeneous catalysis, uncovering the dynamic evolution of active sites in the working conditions is crucial to realizing increased activity and enhanced stability of catalyst in Fenton-like activation.

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