title: The convenient preparation of stable aryl-coated zerovalent iron nanoparticles.
abstract: A novel approach for the in situ synthesis of zerovalent aryl-coated iron nanoparticles (NPs) based on diazonium salt chemistry is proposed. Surface-modified zerovalent iron NPs (ZVI NPs) were prepared by simple chemical reduction of iron(III) chloride aqueous solution followed by in situ modification using water soluble arenediazonium tosylate. The resulting NPs, with average iron core diameter of 21 nm, were coated with a 10 nm thick organic layer to provide long-term protection in air for the highly reactive zerovalent iron core up to 180 °C. The surface-modified iron NPs possess a high grafting density of the aryl group on the NPs surface of 1.23 mmol/g. FTIR spectroscopy, XRD, HRTEM, TGA/DTA, and elemental analysis were performed in order to characterize the resulting material.
authors.affiliation: Department of Biotechnology and Organic Chemistry, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
authors.forename: Olga A
authors.initials: OA
authors.lastname: Guselnikova
authors.affiliation: Department of General and Inorganic Chemistry, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
authors.forename: Andrey I
authors.initials: AI
authors.lastname: Galanov
authors.affiliation: Institute of Semiconductor Physics, Novosibirsk 630090, Russian Federation ; Novosibirsk State University, Novosibirsk 630090, Russian Federation.
authors.forename: Anton K
authors.initials: AK
authors.lastname: Gutakovskii
authors.affiliation: Department of General and Inorganic Chemistry, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
authors.forename: Pavel S
authors.initials: PS
authors.lastname: Postnikov
keywords: arenediazonium salts; chemical reduction; covalent modification; surface-modified nanoparticles; zerovalent iron nanoparticles