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Springer Science and Business Media LLC Nature Communications 14(1)
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    초록·키워드

    Phenol is one of the most important fine chemical intermediates in the synthesis of plastics and drugs with a market size of ca. $30b<sup>1</sup> and the commercial production is via a two-step selective oxidation of benzene, requiring high energy input (high temperature and high pressure) in the presence of a corrosive acidic medium, and causing serious environmental issues<sup>2-5</sup>. Here we present a four-phase interface strategy with well-designed Pd@Cu nanoarchitecture decorated TiO<sub>2</sub> as a catalyst in a suspension system. The optimised catalyst leads to a turnover number of 16,000-100,000 for phenol generation with respect to the active sites and an excellent selectivity of ca. 93%. Such unprecedented results are attributed to the efficient activation of benzene by the atomically Cu coated Pd nanoarchitecture, enhanced charge separation, and an oxidant-lean environment. The rational design of catalyst and reaction system provides a green pathway for the selective conversion of symmetric organic molecules.

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