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Chain-Like Zero-Valent Iron For Fast Degradation Of Methyl Orange (Mo) In Wastewater

Author

Listed:
  • BIN WU

    (College of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, P. R. China)

  • LI YAO

    (College of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, P. R. China)

  • XIANZHI CAO

    (��College of Materials Science and Engineering, Southeast University, Nanjing 211189, P. R. China)

  • YIHE HUANG

    (College of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, P. R. China)

  • ZEZHONG XU

    (College of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, P. R. China)

  • CHENGLIANG HAN

    (College of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, P. R. China)

Abstract

Zero-valent iron nanomaterials with a chain-like structure (Fenm0) were prepared by a facile solution reaction at room temperature. Then, the as-prepared Fenm0 and micro-sized iron materials (Feμm0) were comparatively applied in removal of methyl orange (MO) in wastewater. Results indicated that the as-synthesized Fenm0 exhibited a chain-like structure which was made of many nanospheres with the size of 80nm. Most importantly, compared with Feμm0, the chain-like Fenm0 has higher reactive performances and could quickly and completely decompose MO in water. In comparison, the Fenm0 exhibited structurally enhanced performance of degradation of MO. The kinetic model for oxidation of MO in water matches the first-order equation. The reasons can be attributed to a large number of interfaces in the chain-like Fenm0 which leads to rapid dissolution rate of Fenm0 and subsequently produces lots of hydroxyl radicals (⋅OH) in water. The experimental results further confirmed that these kinds of chain-like iron nanomaterials with proper size could be used as new type Fenton-like materials without H2O2 addition to effectively remove dyes. Moreover, Fenm0 would be completely transformed into magnetite (Fe3O4) nanomaterials which could also be conveniently separated from wastewater by a magnet.

Suggested Citation

  • Bin Wu & Li Yao & Xianzhi Cao & Yihe Huang & Zezhong Xu & Chengliang Han, 2022. "Chain-Like Zero-Valent Iron For Fast Degradation Of Methyl Orange (Mo) In Wastewater," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 29(11), pages 1-8, November.
    • Handle: RePEc:wsi:srlxxx:v:29:y:2022:i:11:n:s0218625x22501451
    DOI: 10.1142/S0218625X22501451
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