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Adsorption of Methylene Blue on Azo Dye Wastewater by Molybdenum Disulfide Nanomaterials
| Content Provider | MDPI |
|---|---|
| Author | Wang, Xiangxiang Zhang, Pengyu Xu, Fangwen Sun, Bai Hong, Guiyun Bao, Lining |
| Copyright Year | 2022 |
| Description | In this study, flower-like $MoS_{2}$ nanomaterials were synthesized by hydrothermal method with excess thiourea. The adsorption performance of $MoS_{2}$ adsorbent for methylene blue (MB) in azo dye wastewater was studied. The morphology, crystal phase, and microstructure of nano $MoS_{2}$ samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. The effects of adsorption isotherm, kinetics, different hydrothermal time, and pH on the adsorption experiment were studied. The results showed that the $MoS_{2}$ adsorbent with a hydrothermal time of 1 h had good adsorption properties for MB. The adsorption data accord with the Langmuir isotherm model, and the maximum adsorption capacity of $MoS_{2}$ adsorbent is 200 mg/g, and the adsorption kinetics agrees well with the pseudo two-level model. The removal rate of MB is not significantly affected by the pH values. The large pH range can still maintain the removal rate above 93.47%, and the regeneration and recovery properties of $MoS_{2}$ were also explored. Finally, the adsorption mechanism of $MoS_{2}$ on MB is discussed. |
| Starting Page | 7585 |
| e-ISSN | 20711050 |
| DOI | 10.3390/su14137585 |
| Journal | Sustainability |
| Issue Number | 13 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-22 |
| Access Restriction | Open |
| Subject Keyword | Sustainability Adsorption Methylene Blue Mos2 Nanomaterials |
| Content Type | Text |
| Resource Type | Article |
