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The Influence of Sacrificial Carbonaceous Supports on the Synthesis of Anhydrous NiF 2 Nanoparticles
Author(s) -
Doubtsof Léa,
Bonnet Pierre,
Jouffret Laurent,
Guérin Katia
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201601306
Subject(s) - anhydrous , cellulose , nanoparticle , materials science , carbon nanotube , nanocomposite , non blocking i/o , graphene , chemical engineering , fluorine , surface modification , reactivity (psychology) , carbon fibers , nanotechnology , particle size , organic chemistry , chemistry , composite material , composite number , catalysis , metallurgy , medicine , alternative medicine , pathology , engineering
We report a multistep synthesis of anhydrous NiF 2 nanoparticles using Single Walled Carbon Nanotubes (SWCNT), Multi Walled Carbon Nanotubes (MWCNT) and cellulose as sacrificial supports. The synthesis method includes precipitation at the surface of carbonaceous supports, followed by gas‐solid treatments under air and pure molecular fluorine. The as‐prepared nanoparticles exhibit different particle size distributions depending on the initial support from ∼20 nm with SWCNT up to ∼60 nm with cellulose. The carbonaceous matrices act as sacrificial supports and are totally removed under fluorine gas. The influence of carbonaceous supports on the as‐obtained nanoparticles is reported and discussed. Since SWCNT, MWCNT and cellulose exhibit different surface chemistries (nature of chemical sites, size related reactivity, …), they drive the formation of nanoparticles with different characteristics. Moreover, intermediate materials Ni(OH) 2 /C and NiO/C have been also studied and the opportunity to obtain promising structures like NiO/graphene nanocomposites by this method has been demonstrated.