F. Asjadi , S. Khatiboleslam Sadrnezhad,
Volume 31, Issue 1 (Jun 2012)
Abstract
In this paper, VO2 nanorods were produced by hydrothermal assisted synthesis of equimolar aqueous NH4Cl and NaVO3 solution. Effect of time and the amount of ethylenediaminetetracetic acid (EDTA) additive on morphology and composition of the final product was determined. The optimum concentration of EDTA was determined to be 0.007 gm/cm3 and the optimum time of the synthesis was 24 h.
R. Nayerhoda, F. Asjadi, P. Seifi, M. Salimi,
Volume 34, Issue 1 (Journal of Advanced Materials-Spring 2015)
Abstract
In the present investigation, spherical nanoparticles of nickel ferrite with uniform structure were successfully produced by hydrothermal method in the presence of polyethylene glycol (PEG) as a polymeric surfactant at 180°C for 12 hour aging time and the effects of the synthesis time, temperature and surfactant were investigated. According to the X-ray analysis, conversion of nickel oxide and hematite to nickel ferrite was a way to produce NiFe2O4. At 140°C, agglomerated particles without specific shape were formed, but at 180°C particles were homogenous with spherical shape. Saturation magnetization increased by increasing the hydrothermal process aging time.
