Recently, different nanomaterial-based adsorbents have received greater attention for the removal of environmental pollutants, specifically heavy metals from aqueous media. In this work, we synthesized few-layered MoS₂ nanosheets via a surfactant-assisted hydrothermal method and utilized them as an efficient adsorbent for the removal of mercury from aqueous media. The synthesized MoS₂ nanosheets showed petal-like morphology as confirmed by scanning electron microscope and high-resolution transmission electron microscopic analysis. The average thickness of the nanosheets is found to be about 57 nm. Possessing high stability and negative zeta potential makes this material suitable for efficient adsorption of mercury from aqueous media. The adsorption efficiency of the adsorbent was investigated as a function of pH, contact time and adsorbent dose. The kinetics of adsorption and reusability potential of the adsorbent were also performed. A pseudo-second-order kinetics for mercury adsorption was observed. As prepared MoS₂ nanosheets showed 93% mercury removal efficiency, whereas regenerated adsorbent showed 91% and 79% removal efficiency in the respective 2^nd and 3^rd cycles. The adsorption capacity of the adsorbent was found to be 289 mg/g at room temperature.

近来，不同的基于纳米材料的吸附剂在去除环境污染物，特别是从水性介质中去除重金属方面，受到了越来越多的关注。在这项工作中，我们通过表面活性剂辅助水热法合成了几层MoS ₂纳米片，并将其用作从水性介质中去除汞的有效吸附剂。合成的MoS ₂扫描电子显微镜和高分辨率透射电子显微镜分析证实，纳米片表现出花瓣状形态。发现纳米片的平均厚度为约57nm。具有高稳定性和负ζ电势，使该材料适用于从水性介质中有效吸附汞。研究了吸附剂的吸附效率与pH，接触时间和吸附剂剂量的关系。还进行了吸附动力学和吸附剂的重用潜力。观察到汞吸附的拟二级动力学。所制备的MoS ₂纳米片显示出93％的除汞效率，而再生的吸附剂分别在^第二和第三阶段显示出91％和79％的去除率。^rd循环。发现在室温下吸附剂的吸附容量为289mg / g。