Highly Efficient Peroxymonosulfate Activation on Electron‐Enriched Ruthenium Dual‐Atom Sites Catalysts for Enhanced Water Purification

Abstract

By rationally adjusting the coordination environment and constructing the more electron‐enriched active site in single‐atom catalysts, the effect of heterogenous peroxymonosulfate (PMS)‐based Fenton‐like reactions can be effectively improved, yet remains a severe challenge. In this study, the electron‐rich Ru dual‐atom site is successfully immobilized onto N‐doped carbon (Ru2N6‐C) for PMS activation in water purification. The presence of electron‐rich Ru dual‐atom sites not only provides more electrons for PMS but also facilitates the formation of a Yeager adsorption configuration on the catalyst surface, which enhances O─O bond cleavage and leads to an increase in •SO4− and •OH generation. Moreover, the Ru2N6‐C catalyst exhibits exceptional durability and reliability, achieving an ultra‐high efficiency with a turnover frequency of 153.95 min−1 M−1 for the naproxen degradation. A membrane reactor is further developed for the purification of wastewater, which is expected to provide a viable approach to controlling water pollution through the design of metal dual‐atom sites carbon‐based catalysts.

From nano- to macroarchitectures: designing and constructing MOF-derived porous materials for persulfate-based advanced oxidation processes

“…179 Xu and co-workers designed electron-rich Ru diatomic sites anchored on N-doped carbon (Ru 2 N 6 -C), which exhibited excellent catalytic activity for the degradation of naproxen with a turnover frequency of 153.95 min À1 M À1 . 180 Yao and colleagues designed MnCo diatomic sites catalyst (MCNC) for the synergistic activation of PMS, in which Mn-N interacts with O atoms of PMS and Co-N accelerates the production of 1 O 2 . 148 In addition to the effect of changes in metal composition on the hierarchically porous MOF-derived catalysts, the incorporation of heteroatoms (N, P, S, B) can also have a significant effect on catalytic activity.…”

“…179 Xu and co-workers designed electron-rich Ru diatomic sites anchored on N-doped carbon (Ru 2 N 6 –C), which exhibited excellent catalytic activity for the degradation of naproxen with a turnover frequency of 153.95 min −1 M −1 . 180 Yao and colleagues designed MnCo diatomic sites catalyst (MCNC) for the synergistic activation of PMS, in which Mn–N interacts with O atoms of PMS and Co–N accelerates the production of 1 O 2 . 148…”