Recently, the warming effect of nitrous oxide (N₂O) in the atmospheric has shown an accelerating upward trend. Adsorption techniques from biomass porous carbon with low energy consumption may control N₂O emissions. This study obtained a series of eucalyptus bark-derived biomass porous carbons through co-doping modification with different ratios of ZnCl₂ (Zn source), urea (N source), and H₃PO₄ (P source). Combining characterization, experiments, and theory calculations, it has been concluded that the N₂O adsorption capacity of porous carbon is significantly enhanced by the co-doping of Zn, N, and P modifications, and that as-prepared porous carbon also exhibits excellent regenerative adsorption performance. Among them, the sample of BC800–1.5/1/2 displayed a prominent adsorption capacity of 1.86 mmol g⁻¹, with the S_BET and the pore volume being 700.912 m²·g⁻¹ and 0.284 cm³ g⁻¹, respectively. Moreover, the addition of Zn co-doping leads to a variation of the chemical functional groups on the porous carbon, which then gives rise to the novel C-Zn bonds that contribute significantly through chemisorption, thereby enhancing the N₂O adsorption capacity of the triple-co-doped eucalyptus bark-based porous carbon. The presented findings provide a scientific strategy for the highly efficient adsorption of N₂O by co-doped eucalyptus bark-based porous carbon preparations.

中文翻译：

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在桉树皮衍生的多孔碳上构建锌与氮和磷耦合的活性位点以增强 N2O 吸附：实验及机理

最近，大气中一氧化二氮 （N₂O） 的变暖效应呈加速上升趋势。低能耗的生物质多孔碳吸附技术可以控制 N₂O 排放。本研究通过不同比例的 ZnCl₂ （Zn 源）、尿素 （N 源） 和 H₃PO₄ （P 源） 的共掺杂改性获得了一系列桉树皮衍生的生物质多孔碳。结合表征、实验和理论计算，得出结论：Zn、N、P 改性的共掺杂显著提高了多孔碳的 N₂O 吸附能力，并且所制备的多孔碳也表现出优异的再生吸附性能。其中，BC800–1.5/1/2 样品表现出 1.86 mmol ^g-1 的显著吸附能力，S_BET 和孔体积分别为 700.912 m²·^g-1 和 0.284 cm^{3 g-1}。此外，Zn 共掺杂的添加导致多孔碳上的化学官能团发生变化，从而产生新颖的 C-Zn 键，这些键通过化学吸附做出了显着贡献，从而增强了三重共掺杂的桉树皮基多孔碳的 N₂O 吸附能力。所提出的研究结果为共掺杂桉树皮基多孔碳制剂高效吸附 N₂O 提供了一种科学策略。