Two-dimensional transition-metal dichalcogenides have gained increasing concerns because of their distinct structural features and also display great potential in mercury removal. Herein, a defect-rich MoS₂ nanosheet is synthesized by using hydrothermal method and applied for adsorptive capture of elemental mercury (Hg⁰) in simulated flue gas at low temperature. It exhibits excellent Hg⁰ removal performance due to its ultra-thin lamellar and defective structures with ample exposed adsorption sites. The Hg⁰ removal efficiency of the defective MoS₂ nanosheet is all above 93% when the reaction temperature is within 25–150 °C. Besides, presence of NO has no influence on Hg⁰ removal, while SO₂ subtly reduces the Hg⁰ removal efficiency due to competitive adsorption. Mo⁴⁺, S²⁻, and S₂²⁻ ions take part in the Hg⁰ removal process, which transfers Hg⁰ into Mo–Hg amalgam and HgS. The process of Hg⁰ adsorption on the defective MoS₂ nanosheet obeys the pseudo-first-order and pseudo-second-order kinetic model.

二维过渡金属二卤化物因其独特的结构特征而引起越来越多的关注，并且在除汞方面也显示出巨大的潜力。在此，富缺陷-MOS ₂纳米片是通过使用水热法合成并申请了元素汞的吸附捕获（汞柱⁰模拟的烟道气中在低温下）。由于其超薄的层状结构和具有充足暴露位置的不良结构，它具有出色的Hg ⁰去除性能。当反应温度在25–150°C范围内时，有缺陷的MoS ₂纳米片的Hg ⁰去除效率均高于93％。此外，NO的存在对Hg ⁰没有影响SO ₂会由于竞争性吸附而巧妙地降低Hg ^0的去除效率。Mo ⁴⁺，S ²⁻和S ₂ ^2-离子参与Hg ^0的去除过程，该过程将Hg ⁰转移到Mo–Hg汞齐和HgS中。Hg ⁰在有缺陷的MoS ₂纳米片上的吸附过程遵循伪一级和伪二级动力学模型。