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Synthesis of Superparamagnetic Fe 3 O 4 Nano-Adsorbent Using an Energy-Saving and Pollution-Reducing Strategy for the Removal of Xylenol Orange Dye in Water

Author

Listed:
  • Yaohui Xu

    (Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China)

  • Qin Wang

    (Laboratory for Functional Materials, School of Electronics and Materials Engineering, Leshan Normal University, Leshan 614000, China)

  • Zhao Ding

    (National Engineering Research Center for Magnesium Alloys, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China)

Abstract

The superparamagnetic Fe 3 O 4 nanoparticles as an absorbent with a size distribution of 4.8–6.4 nm were synthesized using a simple one-pot hydrothermal strategy at 200 °C for 24 h, where iron citrate and distilled were the sum total of raw materials. The as-synthesized Fe 3 O 4 powders showed rapid and efficient adsorption for xylenol orange with a saturated adsorption amount of 42.5 mg/g according to Langmuir linear fitting, and the adsorption reaction between xylenol orange adsorbate and Fe 3 O 4 adsorbent was mostly completed within 10 min. The Fe 3 O 4 nanoparticles not only had superparamagnetism with a saturation magnetization value of 54.9 emu/g at 15 kOe but also possessed strong magnetic response, making them easy to separate easily from aqoeous solution under the attraction of magnet. In this work, the Fe 3 O 4 particles can be totally attracted toward the magnet within 15 s, leaving the suspension a clear solution.

Suggested Citation

  • Yaohui Xu & Qin Wang & Zhao Ding, 2022. "Synthesis of Superparamagnetic Fe 3 O 4 Nano-Adsorbent Using an Energy-Saving and Pollution-Reducing Strategy for the Removal of Xylenol Orange Dye in Water," Energies, MDPI, vol. 15(19), pages 1-10, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7378-:d:936010
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