Fe-based multi-phase nanocrystalline ribbons with hierarchically flowerlike structured metal oxides after modified by Orange II for CrVI absorption

作者：Chen, Shuang-qin; Dong, Liang-zheng; Hui, Ke-zhen; Peng, Zhen; Li, Zhun; Lu, Zhi-Chao; Shao, Yang^*; Yao, Ke-fu^*

来源：Journal of Iron and Steel Research International, 2018, 25(6): 608-613.

DOI：10.1007/s42243-018-0086-3

• Fe-based multi-phase nanocrystalline ribbon
• Flowerlike nanostructure
• alpha-FeO(OH)
• Hexavalent chromium
• Wastewater treatment

Three-dimensional flowerlike nanostructured metal oxides attached on the surfaces of Fe-based multi-phase nanocrystalline ribbons (Fe-MNRs) were prepared by a simple way (through immersing the Fe-MNRs in Orange II solution). It has been found that the as-prepared Fe-MNRs with 3D flowerlike nanostructures (Fe-MNRs + FNs) exhibit good absorption property for a typical heavy metal ion (Cr-VI) in wastewater, while Fe-MNRs do not possess such properties. The Fe-MNRs + FNs could remove 99% Cr-VI ions from the solution in 40 min, and this adsorption property can be attributed to the ion exchange between Cr-VI and surface hydroxyl groups (O-H) of 3D flowerlike nanostructures. The present result suggests that the Fe-MNRs + FNs, prepared by facile way, possess great potentials in removing heavy metallic ions in wastewater.

• 出版日期2018-6
• 单位江苏大学; 钢铁研究总院; 清华大学