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- Title
Catalytically active atomically thin cuprate with periodic Cu single sites.
- Authors
Yang, Huimin; Xi, Shibo; Guo, Na; Wang, Mu; Liu, Lingmei; Lyu, Pin; Yu, Xiaolong; Li, Jing; Xu, Haomin; Hai, Xiao; Li, Zejun; Li, Xinzhe; Sun, Tao; Zhao, Xiaoxu; Han, Yu; Yu, Wei; Wu, Jie; Zhang, Chun; Fei, Honghan; Koh, Ming Joo
- Abstract
Rational design and synthesis of catalytically active two-dimensional (2D) materials with an abundance of atomically precise active sites in their basal planes remains a great challenge. Here, we report a ligand exchange strategy to exfoliate bulk [Cu4(OH)6][O3S(CH2)4SO3] cuprate crystals into atomically thin 2D cuprate layers ([Cu2(OH)3]+). The basal plane of 2D cuprate layers contains periodic arrays of accessible unsaturated Cu(II) single sites (2D-CuSSs), which are found to promote efficient oxidative Chan-Lam coupling. Our mechanistic studies reveal that the reactions proceed via coordinatively unsaturated CuO4(II) single sites with the formation of Cu(I) species in the rate-limiting step, as corroborated by both operando experimental and theoretical studies. The robust stability of 2D-CuSSs in both batch and continuous flow reactions, coupled with their recyclability and good performance in complex molecule derivatization, render 2D-CuSSs attractive catalyst candidates for broad utility in fine chemical synthesis.
- Subjects
COPPER; CUPRATES; OXIDATIVE coupling; CHEMICAL synthesis; WASTE recycling; HETEROGENEOUS catalysis; DERIVATIZATION
- Publication
National Science Review, 2023, Vol 10, Issue 1, p1
- ISSN
2095-5138
- Publication type
Article
- DOI
10.1093/nsr/nwac100