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Adsorption of Methylene Blue on Azo Dye Wastewater by Molybdenum Disulfide Nanomaterials

Author

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  • Xiangxiang Wang

    (Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, China
    Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Pengyu Zhang

    (Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, China
    Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Fangwen Xu

    (Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, China
    Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Bai Sun

    (Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, China
    Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Guiyun Hong

    (Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, China
    Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Lining Bao

    (Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, China
    Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

Abstract

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.

Suggested Citation

  • Xiangxiang Wang & Pengyu Zhang & Fangwen Xu & Bai Sun & Guiyun Hong & Lining Bao, 2022. "Adsorption of Methylene Blue on Azo Dye Wastewater by Molybdenum Disulfide Nanomaterials," Sustainability, MDPI, vol. 14(13), pages 1-12, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:13:p:7585-:d:844645
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    Cited by:

    1. Haradhan Kolya & Chun-Won Kang, 2022. "Biogenic Synthesis of Silver-Iron Oxide Nanoparticles Using Kulekhara Leaves Extract for Removing Crystal Violet and Malachite Green Dyes from Water," Sustainability, MDPI, vol. 14(23), pages 1-11, November.

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