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- W4311143493 abstract "Constructing dual-atom catalysts (DACs) is an appealing strategy since the synergistic interaction of adjacent active metal atoms can improve the catalytic activity while maintaining high stability. However, the rational design of DACs and the insightful understanding of the structure-performance relationship remain the central tasks. Herein, we construct a unique DAC consisting of O-bridged Fe-W heterodimer embedded in graphitic carbon nitride (Fe-W-CN), which is synthesized by pre-fixing and pyrolysis process. In Fe-W-CN, the O-coordinated Fe-W atoms are anchored in CN vacancies through nitrogen atoms with N-Fe-O-W-N configuration. The W-O site acts as a “nail” to stable the Fe atom during oxygen-containing calcination, and the final formed N-Fe-O-W-N moiety also can resist the attack of strong oxidizing radicals to achieve high stability. The density functional theory calculation indicates that the Fe atom is the main active site for peroxymonosulfate (PMS) adsorption and activation. Meanwhile, electrons generated by photoexcited CN can accelerate the recycling of Fe3+/Fe2+ for high catalytic activity. Fe-W-CN exhibits a high CBZ removal efficiency through the activation of PMS, which is 6.9 times higher than CN. This work paves the way to develop novel DACs with stable and high catalytic efficiency." @default.
- W4311143493 created "2022-12-23" @default.
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- W4311143493 date "2023-01-01" @default.
- W4311143493 modified "2023-09-25" @default.
- W4311143493 title "O-bridged Fe-W dual-atom co-anchored on carbon nitride for highly efficient solar-induced peroxymonosulfate activation" @default.
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- W4311143493 doi "https://doi.org/10.1016/j.cej.2022.140759" @default.
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