The adsorption and activation of CO₂ are two essential steps during the photocatalytic reduction of CO₂. However, CO₂ molecules, being non-polar and linear, are thermodynamically too stable to be activated. In this work, we graft aromatic amine molecules to the surface of two-dimensional MoS_xSe_y to improve its photocatalytic efficiency. Thus, the photongenerated electrons would swiftly transfer from MoS_xSe_y to the grafted molecules under the excitation of the visible light, which conducts strong interaction with CO₂ to promote its adsorption. In addition, MoS_xSe_y with grafted aromatic amine molecules exhibited strong reduction ability to trigger the activation of adsorbed CO₂, and to facilitate the consequent deoxidization and hydrogenation, significantly improving the final production. The proposed grafting of aromatic amine molecules could be a promising strategy for effectively activating CO₂ photoreduction.

中文翻译：

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二维 MoSxSey 表面化学接枝在可见光光还原中吸附和活化 CO2


CO 的吸附和活化 ₂ 是 CO 光催化还原过程中的两个重要步骤 ₂ 。然而，CO ₂ 分子是非极性和线性的，热力学上太稳定而无法被激活。在这项工作中，我们将芳香胺分子接枝到二维 MoS _x Se 的表面 _y ，以提高其光催化效率。因此，在可见光的激发下，光子产生的电子会迅速从 MoS _x Se _y 转移到接枝分子上，这与 CO 进行强相互作用 ₂ ，促进其吸附。此外， _y 与接枝芳香胺分子的 MoS _x Se 表现出很强的还原能力，可以触发吸附的 CO 的活化 ₂ ，并促进随之而来的脱氧和加氢，显着提高最终产量。拟议的芳香胺分子接枝可能是有效激活 CO ₂ 光还原的一种有前途的策略。