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Bioinspired molecular clusters for water oxidation
Coordination Chemistry Reviews  (IF22.315),  Pub Date : 2021-09-01, DOI: 10.1016/j.ccr.2021.214164
Qi-Fa Chen, Yu-Hua Guo, Yi-Han Yu, Ming-Tian Zhang

Water oxidation (2 H2O → 4H+ + 4 e- + O2) is a key step in utilization of solar energy for producing hydrogen of artificial photosynthetic system. Inspired by the oxygen evolution complex (OEC) in PSII, molecular catalysts are extensively studied and the progress both in biomimetic studies and the mechanistic understanding is truly remarkable. While research efforts in the earlier years focused on the Ru-, Mn- and Ir-based complexes, the focus has gradually changed to non-precious catalysts based on earth-abundant metals (Fe, Co, Ni, Cu). These studies have deepened our understanding on the mechanism of water oxidation, including both proton-coupled electron transfer and O-O bond formation. Herein, we briefly review the research progress surrounding the construction of the OEC-like catalytic systems as well as bioinspired multi-nuclear catalysts for water oxidation.