Influence of stirring velocity on the synthesis of magnetite nanoparticles (Fe3O4) by the co-precipitation method

Long‐Term Stability and Reproducibility of Magnetic Colloids Are Key Issues for Steady Values of Specific Power Absorption over Time

“…[22] [23] [24] Also, reverse micelle synthesis has been reported to give average particle sizes within 2.92 < <d> < 8.95 nm (i.e., 0.061< σ/<d> <0.12) [25] Besides Gen et al prepared α-FeOOH nanorods at room temperature by a micoremulsion approach whose size were 8.2 ± 1.5 nm (σ/<d>=0.18) in diameter and 106 ± 16 nm (σ/<d>=6.62)in length. [26] On the other hand, the reproducibility of both the average particle size and size distributions, as observed in figure 1, are excellent for the PEI-MNPs samples.…”

NANOBIOCATALYTIC SYSTEMS BASED ON LIPASE-Fe3O4 AND CONVENTIONAL SYSTEMS FOR ISONIAZID SYNTHESIS: A COMPARATIVE STUDY

“…As shown in the diffraction pattern for the NP/APTES, the peaks are slightly wider due to the formation of a Si-O layer, which gives it greater surface homogeneity. Functionalization increased the crystal NP/APTES nanocomposite organization degree (Feng et al, 2009;Valenzuela et al, 2009). Figure 5 shows the FTIR spectra of the MNPs, MNPs/APTES(1:3) and MNPs/APTES(1:3)/CALB samples.…”

Modified chemical coprecipitation of magnetic magnetite nanoparticles using linear–dendritic copolymers

“…Recently, research on the synthesis and application of Fe 3 O 4 NPs in chemistry and pharmaceuticals has received particular attention (10). Several methods have been developed for the synthesis of magnetic Fe 3 O 4 NPs, including chemical coprecipitation (10)(11)(12)(13)(14), the hydrothermal process (15), the solvothermal method (16), the sol-gel technique (17,18), microemulsion (19,20), etc. Among these, the chemical coprecipitation is considered as the simplest, most economical, and most efficient method (21).…”

“…Therefore, achieving uniform-sized Fe 3 O 4 particles and high magnetic response is hard; especially when the Fe 3 O 4 particle size should be in the nanoscale (12). To overcome these limitations, several coprecipitation techniques were used such as interfacial coprecipitation (12), ultrasonic coprecipitation (11), microwave coprecipitation (22), mechanochemical coprecipitation (13), and coprecipitation with fast stirring (14). Furthermore, other research has utilized surfactants (23), macromolecules (24), or dilute acids (25) Linear-dendritic copolymers are hybrid macromolecules containing linear polymers and dendrimers (26,27).…”