Developing photocatalysts with wide spectrum absorption and strong nitrogen activation is critical for nitrogen fixation under mild conditions. Herein, one-dimensional natural clay attapulgite (ATP) supported YF₃:Sm³⁺ were successfully synthesized via microwave hydrothermal method, and the composites were employed as the catalyst for photocatalytic nitrogen fixation under visible-light irradiation. Results indicated that the production of ammonia reached as high as 41.2 mg·L⁻¹ within 3 h when the molar ratio of Sm³⁺ and the mass fraction of YF₃:Sm³⁺ were optimized. The enhanced fixation performance is mainly due to that the modified ATP fibber with abundant active sites and the doped fluoride with defective vacancy facilitate the adsorption and activation of N₂. Furthermore, the upconversion property of YF₃:Sm³⁺ increases the harvesting of visible-light energy, meanwhile the Z-scheme heterostructure built between YF₃:Sm³⁺ and modified ATP inhibits the recombination of charge carriers and retains high redox potentials for N₂ reduction.

开发具有广谱吸收和强氮活化作用的光催化剂对于在温和条件下固氮至关重要。本文通过微波水热法成功合成了一维天然粘土凹凸棒土（ATP）负载的YF ₃：Sm ³⁺，并将其用作可见光固氮催化剂。结果表明，当Sm ³⁺的摩尔比和YF ₃：Sm ³⁺的质量分数在3 h内，氨的生成量高达41.2 mg·L ^-1。被优化。固定性能的提高主要是由于具有丰富活性位点的改性ATP纤维和空位缺陷的掺杂氟化物促进了N ₂的吸附和活化。此外，YF ₃：Sm ³⁺的上转换特性增加了可见光能量的收集，同时在YF ₃：Sm ³⁺和修饰的ATP之间建立的Z方案异质结构抑制了电荷载流子的重组并保留了高的氧化还原电势。 N ₂还原。