Shape-controlled synthesis of magnetic Fe₃O₄ nanoparticles with different iron precursors and capping agents

Abstract

This paper describes a modified method to prepare monodisperse Fe3O4 magnetic nanoparticles with different shapes (cube, octahedron, and sphere).

Catalytic hydrolysis of cellobiose using different acid‐functionalised Fe 3 O 4 magnetic nanoparticles

“…The presence of these diffraction peaks suggested highly crystalline nature and coincide with the standard XRD data of iron oxide nanoparticles. Moreover, these observations are also in accordance with the various previous studies proposed by Wei et al [37], Prasad et al [38] and Fatima et al [39]. In addition, similar diffraction peaks were observed in the case of Fe 3 O 4 -MNPs@Si (Fig.…”

Influence of Magnetic Nanoparticles on Modified Polypyrrole/m-Phenylediamine for Adsorption of Cr(VI) from Aqueous Solution

“…XRD, BET, TGA and VSM analyses were conducted to support the FTIR findings for the successful synthesis of the nanocomposite, and the results are presented in Figure 4. The XRD analysis was done, and the diffraction patterns of the synthesised PPy, magnetite nanoparticles and the PPy-mPD/Fe 3 O 4 nanocomposite prior to and after Cr(VI) adsorption, are given in Figure 4A 511) and (440) planes, respectively, indicating the highly crystalline phase purity of the nanoparticles [20]. These results agree well with the HR-TEM results in Figure 1f.…”

“…The XRD analysis was done, and the diffraction patterns of the synthesised PPy, magnetite nanoparticles and the PPy-mPD/Fe3O4 nanocomposite prior to and after Cr(VI) adsorption, are given in Figures 4A(ad). The XRD pattern of the Fe3O4 nanoparticles ( Figure 4A(a)) exhibits sharp peaks appearing at 2θ = 32.2, 38.0, 44.4, 64.7, 78.1 and 83.5°, assigned to the (220), (311), (400), (422), (511) and (440) planes, respectively, indicating the highly crystalline phase purity of the nanoparticles [20]. These results agree well with the HR-TEM results in Figure 1f.…”

Potential Toxicity of Iron Oxide Magnetic Nanoparticles: A Review

“…The synthesis of MNPs with these particular qualities has been an active area of research for quite some time now [ 39 ]. The synthesis of MNPs with controlled shape and size has been demonstrated in different studies [ 40 , 41 , 42 , 43 , 44 ]. MNPs can be synthesized using various defined techniques, namely, hydrothermal synthesis, sol-gel reaction methods, microemulsion methods, electrospray synthesis [ 45 ], chemical co-precipitation, thermal decomposition, solvothermal processes, sonochemical synthesis, microwave assisted synthesis, chemical vapor deposition, carbon arc, combustion, laser pyrolysis, [ 46 , 47 ] spray pyrolysis, precipitation from solution, polyol method, green synthesis [ 48 ], bacterial and microorganism synthesis (including magnetotactic bacteria and iron reducing bacteria) [ 49 , 50 ] and electrochemical synthesis [ 48 ].…”