We are trying to use ethylene glycol to reduce metal ions (e.g., Pd, Cu, Ni, Co) to prepare supported nanoparticles. The reduction of these metals from oxidized state to elemental state requires refluxing ethylene glycol around its boiling point. For the refluxing process, I am not sure that whether we should do it under inert gas atmosphere or not (N2 or Ar). Or can we do it simply in the air? For example, the following article, but they didn't mention that whether they did it in air or not.
Palladium Cobalt Alloy Catalyst Nanoparticles Facilitated Enhanced
Hydrogen Storage Performance of Graphitic Carbon Nitride
[ 1] Pt NP and other NP
Pls look into page number :5( find general mechanism in EG)
of
The Bönnemann Nanochemistry Research Group{ ATTACHED}
[ 2] If you are preparing Ni NP by the hydrazine reduction in ethylene glycol then no need of inert atmosphere of N2 and XRD showed no Nio peak implying no oxidation takes place
(a) Ankur Pandey Int. Journal of Engineering Research and Applications www.ijera.com ISSN : 2248-9622, Vol. 5, Issue 4, ( Part -2) April 2015, pp.96-100
(b)Journal of Colloid and Interface Science
Volume 259, Issue 2, 15 March 2003, Pages 282–286
Synthesis and characterization of nickel nanoparticles by hydrazine reduction in ethylene glycol
[3] Even for Co NP, there is no need of inert gas atmosphere of N2
Article in Langmuir 23(10):5802-9 · May 2007
· DOI: 10.1021/la0637418 · Source: PubMed
[4] Same is true for Cu NP
Synthesis of Cu Nanoparticles for preparation of Nanofluids
Velasco Abreo A., Perales Perez O and Guttierrez G
Typical reaction of any polyol. No need to use nitrogen or inert atmosphere.
Fully agree with Prof. Varma Sir's view and you can do in hydrothermal method.
i think using sodium borohydride is unnecessary and is dangerous i will refer to use ethylene glycol its own as reducing agent, you will better use solvothermal method
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