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

Original Paper
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Abstract

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 (CrVI) in wastewater, while Fe-MNRs do not possess such properties. The Fe-MNRs + FNs could remove 99% CrVI ions from the solution in 40 min, and this adsorption property can be attributed to the ion exchange between CrVI 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.

Keywords

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

Notes

Acknowledgements

This work was supported by the National Key Basic Research and Development Programme (Grant No. 2016YFB0300500) and the National Natural Science Foundation of China (NSFC, Grant Nos. 51571127 and 51771096).

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Copyright information

© China Iron and Steel Research Institute Group 2018

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringTsinghua UniversityBeijingChina
  2. 2.School of Materials Science and EngineeringJiangsu UniversityZhenjiangChina
  3. 3.China Iron & Steel Research Institute GroupBeijingChina

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