Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China.
Shandong Institute of Advanced Technology, Jinan, 250100, P. R. China.
Small. 2022 Apr;18(14):e2106680. doi: 10.1002/smll.202106680. Epub 2022 Feb 24.
Facilitating the mass transfer and spatial charge separation is a great challenge for achieving efficient oxidation of NO and outstanding sulfur resistance. Herein, a hydrothermal-assisted confinement growth technique is used to fabricate well-defined three-dimensional CuOx@MnOx hetero-shelled hollow-structure catalysts. By integrating the coupled plasma space reactor and the porous hierarchical structure of the catalyst, excellent stability (10 h) and high conversion of NO (93.86%) are reached under the concentration of SO (1000 mg m ) and NO (200 mg m ). Impressively, precise surface characterization and detailed density functional theory calculations show that the spatial hetero-shelled micro-reactor can orient the redox pairs transportation, facilitating the combination of NO with the surface coordinately unsaturated O atoms, and also prevent the poisoning of SO molecules due to the curvature and surface charge effect in the non-thermal plasma equipment.
促进传质和空间电荷分离对于实现高效氧化 NO 和出色的抗硫性能是一个巨大的挑战。在此，采用水热辅助限域生长技术制备了具有良好定义的三维 CuOx@MnOx 异质壳层空心结构催化剂。通过将耦合等离子体空间反应器与催化剂的多孔分级结构相结合，在 SO（1000mg·m）和 NO（200mg·m）浓度下，实现了优异的稳定性（10 小时）和高的 NO 转化率（93.86%）。令人印象深刻的是，精确的表面特征化和详细的密度泛函理论计算表明，空间异质壳层微反应器可以定向氧化还原对的传输，促进 NO 与表面配位不饱和 O 原子的结合，并且由于在非热等离子体设备中的曲率和表面电荷效应，防止 SO 分子的中毒。
