Novel molybdenum disulfide-montmorillonite (MoS₂@2DMMT) hydrogels for Cu(II) removal and inhibition on bacterial growth were successfully prepared. MoS₂ was first in-situ growth onto 2DMMT platelet through hydrothermal method and then cross-linked with organic reagents to form hydrogels. The flower-like structure of synthesized MoS₂ could be clearly observed in MoS₂@2DMMT by SEM. The synthesized hydrogels possessed a three-dimensional macroporous structure, offering a free access for contaminants to get inside and combine with the active sites. Adsorption tests revealed that efficient Cu(II) removal (65.75 mg/g) could be achieved within a short time (30 min) at pH 5. The pseudo-second-order kinetics model and Langmuir isotherm model indicated the existence of chemisorption and monolayer absorption for Cu(II) onto MoS₂@2DMMT hydrogels. Characterizations of EDS and XPS indicated that Cu(II) reacted with groups of carboxyl, hydroxyl and amidogen. Bacteriostatic tests revealed that almost a complete bacteriostatic was achieved with just small dosage (0.8 mg/mL) of MoS₂@2DMMT hydrogels after the Cu(II) removal under the normal illumination. The mechanism was ascribed to the destructive effect of Cu(II) to the cytomembrane and the damage of reactive oxygen species (ROS) to the DNA. Such hydrogel not only provided insights for treating co-existing contaminates, but also guides for designing novel polymer materials from two-dimensional (2D) nano-materials.

成功制备了新型的二硫化钼-蒙脱土（MoS ₂ @ 2DMMT）水凝胶，用于去除Cu（II）和抑制细菌生长。MoS ₂首先通过水热法原位生长到2DMMT血小板上，然后与有机试剂交联形成水凝胶。花状合成的MoS的结构₂可在硫化钼被清楚地观察到₂SEM的@ 2DMMT。合成的水凝胶具有三维大孔结构，可让污染物自由进入内部并与活性部位结合。吸附测试表明，在pH值为5的短时间内（30分钟），可以有效去除Cu（II）（65.75 mg / g）。伪二级动力学模型和Langmuir等温模型表明存在化学吸附和单层MoS ₂ @ 2DMMT水凝胶上吸收Cu（II）。EDS和XPS的表征表明Cu（II）与羧基，羟基和酰胺基反应。抑菌试验表明，仅用少量MoS ₂（0.8 mg / mL）就可达到几乎完全的抑菌作用。在正常光照下去除Cu（II）后的@ 2DMMT水凝胶。该机制归因于Cu（II）对细胞膜的破坏作用和活性氧（ROS）对DNA的破坏。这种水凝胶不仅为处理共存的污染物提供了见识，而且为从二维（2D）纳米材料设计新型聚合物材料提供了指导。