The convenient preparation of stable aryl-coated zerovalent iron nanoparticles

Beilstein Journal of Nanotechnology

Olga A. Guselnikova¹  Pavel S. Postnikov²  Andrey I. Galanov²  Anton K. Gutakovskii³ 

[1] Department of Biotechnology and Organic Chemistry, Tomsk Polytechnic University, Tomsk 634050, Russian Federation;Department of General and Inorganic Chemistry, Tomsk Polytechnic University, Tomsk 634050, Russian Federation,;Institute of Semiconductor Physics, Novosibirsk 630090, Russian Federation;

关键词: arenediazonium salts;    chemical reduction;    covalent modification;    surface-modified nanoparticles;    zerovalent iron nanoparticles;   

DOI  :  10.3762/bjnano.6.121

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown