Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China.
Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China.
Chemosphere. 2023 Sep;336:139245. doi: 10.1016/j.chemosphere.2023.139245. Epub 2023 Jun 15.
Drawing on the robust activation activity and affinity that transition metal ions and MoS exhibit towards peroxymonosulfate (PMS), 1T/2H hybrid molybdenum disulfide doped with Fe (Fe/N-MoS) was synthesized to activate PMS for the treatment of organic wastewater. The ultrathin sheet morphology and 1T/2H hybrid nature of Fe/N-MoS were confirmed by characterization. The (Fe/N-MoS + PMS) system demonstrated excellent performance in the degradation of carbamazepine (CBZ) above 90% within 10 min even under high salinity conditions. By electron paramagnetic resonance and active species scavenging experiments, it was inferred that SO palyed a dominant role in the treatment process. The strong synergistic interactions between 1T/2H MoS and Fe efficiently promoted PMS activation and generated active species. Additionally, the (Fe/N-MoS + PMS) system was found to be capable of high activity for CBZ removal in high salinity natural water, and Fe/N-MoS exhibited high stability during recycle tests. This new strategy of Fe doped 1T/2H hybrid MoS for more efficient PMS activation provides valuable insights for the removal of pollutants from high salinity wastewater.
受过渡金属离子和 MoS 对过一硫酸盐（PMS）表现出的强活化活性和亲和力的启发，合成了掺杂 Fe 的 1T/2H 混合二硫化钼（Fe/N-MoS）以活化 PMS 来处理有机废水。通过表征证实了 Fe/N-MoS 的超薄片层形貌和 1T/2H 混合特性。即使在高盐度条件下，（Fe/N-MoS + PMS）系统在 10 分钟内也能使卡马西平（CBZ）的降解率超过 90%，表现出优异的性能。通过电子顺磁共振和活性物质捕获实验推断，SO 在处理过程中起主要作用。1T/2H MoS 和 Fe 之间的强协同相互作用有效地促进了 PMS 的活化并生成了活性物质。此外，（Fe/N-MoS + PMS）系统被发现能够在高盐度天然水中高效去除 CBZ，并且在循环测试中 Fe/N-MoS 表现出高稳定性。这种用于更有效地活化 PMS 的掺杂 Fe 的 1T/2H 混合 MoS 的新策略为去除高盐度废水中的污染物提供了有价值的思路。
