, Volume 10, Issue 5, pp 1851–1859 | Cite as

Preparation of Pyramids Structured Silicon as a Support for Nano Sized Zero Valent Iron Particles for Nitrate Removal from Water

  • Mansoor Anbia
  • Leila Kamel
Original Paper


In this study, pyramids structured silicon (PSi) has been made from metallurgical grade silicon powder with wet alkaline etching and then chemically activated with nano zero valent iron (NZVI) to eliminate nitrate. The NZVI/PSi composite was characterized by scanning electronic microscopy (SEM), X-ray diffraction(XRD), X-ray fluorescence spectrometer (XRF), energy dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), and UV–Vis spectrophotometry. The size of NZVI particles was between 30–100 nm coated on PSi without clustering of the NZVI particles due to the electromagnetic attraction forces. The synergistic effect of NZVI/PSi composites obviously increased remarkably nitrate removal efficiency than NZVI alone. Chemical reduction of nitrate by zerovalent iron in water requires acidic pH conditions but NZVI/PSi composite can reduce nitrate in water in the pH range of 2–7. Also, removal of nitrate complete in 20 min by NZVI/PSi composite that was shorter than NZVI in 120 min. Above all, this composite completely was separated from solution with external magnetic field.


Textured silicon Nano sized zerovalent iron Nitrate Chemical reduction 


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The authors thank Iran University of Science and Technology for laboratory support at the Research Laboratory of Nanoporous Materials and also extend their thanks to Chemistry and Chemical Engineering Research Center of Iran.


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Iran University of Science and TechnologyTehranIslamic Republic of Iran

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