Iron Nanoparticles: the Core−Shell Structure and Unique Properties for Ni(II) Sequestration

Citations Over TimeTop 1% of 2006 papers

Abstract

It is demonstrated that iron nanoparticles function as a sorbent and a reductant for the sequestration of Ni(II) in water. A relatively high capacity of nickel removal is observed (0.13 g Ni/g Fe, or 4.43 mequiv Ni(II)/g), which is over 100% higher than the best inorganic sorbents available. High-resolution X-ray photoelectron spectroscopy (HR-XPS) confirms that the zerovalent iron nanoparticles have a core-shell structure and exhibit characteristics of both hydrous iron oxides (i.e., as a sorbent) and metallic iron (i.e., as a reductant). Ni(II) quickly forms a surface complex and is then reduced to metallic nickel on the nanoparticle surface. The dual properties of iron nanoparticles may offer efficient and unique solutions for the separation and transformation of metal ions and other environmental contaminants.

Related Papers

• → Reduction and adsorption of Pb2+ in aqueous solution by nano-zero-valent iron—A SEM, TEM and XPS study(2010)205 cited
• → Investigation on the sulfur state and phase transformation of spent and regenerated S zorb sorbents using XPS and XRD(2012)92 cited
• → An X-ray Photoelectron Spectroscopic Study of the Poly-N-vinylpyrrolidone Desorption from the Surface of a Granulated Carbon Sorbent(2019)5 cited
• Susquehanna Chorale Spring Concert "Roots and Wings"(2017)
• → DETERMINING QUALITY REQUIREMENTS AT THE UNIVERSITIES TO IMPROVE THE QUALITY OF EDUCATION(2018)