Decoration of defective MoS2 nanosheets with Fe3O4 nanoparticles as superior magnetic adsorbent for highly selective and efficient mercury ions (Hg2+) removal
作者： Yiheng Song , Meice Lu , Bo Huang , Dali Wang , Guan Wang
DOI: 10.1016/J.JALLCOM.2017.12.087
关键词:
摘要: Abstract We report a facile approach to prepare superior magnetic adsorbent towards Hg2+ ions by decoration of defective MoS2 (d-MoS2) nanosheets with Fe3O4 nanoparticles. The adsorption performance the resulted d-MoS2/Fe3O4 nanohybrids was studied as function solution pH, contact time, and concentration. simultaneously showed high capacity, outstanding selectivity, rapid rate, excellent separation capability for removal ions. Their capacities at residual concentration 1 μg/L (drinking water regulation limit) 2 μg/L (wastewater are 0.05 mg/g 0.11 mg/g, respectively. With initial 10 mg/L, decreased low 1.7 μg/L after only 20 min. process can be well fitted pseudo-second-order kinetic model Langmuir isotherm model, maximum capacity reach 425.5 mg/g, which is much higher than other reported adsorbents. Moreover, adsorbed could regenerated in acid without obvious decline efficiency.
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