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- W2902386661 abstract "Developing single-atom catalysts with porous micro-/nanostructures for high active-site accessibility is of great significance but still remains a challenge. Herein, we for the first time report a novel template-free preassembly strategy to fabricate porous hollow graphitic carbonitride spheres with single Cu atoms mounted via thermal polymerization of supramolecular preassemblies composed of a melamine-Cu complex and cyanuric acid. Atomically dispersed Cu-N3 moieties were unambiguously confirmed by spherical aberration correction electron microscopy and extended X-ray absorption fine structure spectroscopy. More importantly, this material exhibits outstanding catalytic performance for selective oxidation of benzene to phenol at room temperature, especially showing phenol selectivity (90.6 vs 64.2%) and stability much higher than those of the supported Cu nanoparticles alone, originating from the isolated unique Cu-N3 sites in the porous hollow structure. An 86% conversion of benzene, with an unexpectedly high phenol selectivity of 96.7% at 60 °C for 12 h, has been achieved, suggesting a great potential for practical applications. This work paves a new way to fabricate a variety of single-atom catalysts with diverse graphitic carbonitride architectures." @default.
- W2902386661 created "2018-12-11" @default.
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- W2902386661 date "2018-11-30" @default.
- W2902386661 modified "2023-10-18" @default.
- W2902386661 title "Preassembly Strategy To Fabricate Porous Hollow Carbonitride Spheres Inlaid with Single Cu–N<sub>3</sub> Sites for Selective Oxidation of Benzene to Phenol" @default.
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- W2902386661 doi "https://doi.org/10.1021/jacs.8b10703" @default.
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