Solvothermal synthesis of magnetic spinel ferrites

Abstract

At present, solvothermal fabrication method has widely been applied in the synthesis of spinel ferrite nanoparticles (SFNs), which is mainly because of its great advantages such as precise control over size, shape distribution, and high crystallinity that do not require postannealing treatment. Among various SFNs, Fe3O4 nanoparticles have attracted tremendous attention because of their favorable physical and structural properties which are advantageous, especially in biomedical applications, among which the vast application of these materials as targeted drug delivery systems, hyperthermia, and imaging agents in cancer therapy can be mentioned. The main focus of this study is to present an introduction to solvothermal method and key synthesis parameters of SFNs through this synthesis route. Moreover, most recent progress on the potential applications of Fe3O4 nanoparticles as the most important compound among the spinel ferrites family members is discussed.

Electrospun captopril‐loadedPCL‐carbon quantum dots nanocomposite scaffold: Fabrication, characterization, and in vitro studies

“…The FTIR spectrum of CQDs shows the bands at 3430, 2923, 2854, 1710, 1572, 1402, 1126, and 1075 cm −1 attributing to the OH, NH, CH, CO, NH, CH, CN (CN), and epoxy vibrations, respectively (Figure 3B). 23,24 For the FTIR spectrum of S1 (PCL), the bands at 2936, 2861, 1721, 1237 and 1159 cm −1 were related to the asymmetric CH 2 stretching, symmetric CH 2 stretching, carbonyl stretching, asymmetric COC stretching, and OCO stretching, respectively (Figure 3C). 25 As seen in Figure 3D, the addition of CQDs to the PCL scaffold did not affect the FTIR pattern of S4 sample remarkably; it may have rooted in either the low weight percentage of CQDs in the PCL matrix or the overlapping of CQDs with PCL bands.…”

“…The FTIR pattern of pure CP is visible in the Figure 3A, Figure 3B). 23,24 For the FTIR spectrum of S1 (PCL), the bands at 2936, 2861, 1721, 1237 and 1159 cm −1 were related to the asymmetric CH 2 stretching, symmetric CH 2 stretching, carbonyl stretching, asymmetric C O C stretching, and O C O stretching, respectively ( Figure 3C). 25 As seen in Figure 3D, the addition of CQDs to Figure 3E, the presence of CP in the S8 sample could be confirmed through the appearance of carboxylic acid and amide bonding band at 1591 cm −1 .…”

Exploring the direct synthesis of exchange-spring nanocomposites by reduction of CoFe2O4 spinel nanoparticles using in situ neutron diffraction

“…27 The parent CoFe 2 O 4 nanoparticles can be easily prepared via solvothermal synthesis with a high degree of control over particle size. 15,39,40 Notably, CoFe 2 O 4 nanoparticles with a coercivity as high as H c = 9.5 kOe (756 kA/m) at room temperature have been reported, 41 and the optimal SSD size for CoFe 2 O 4 particles has been experimentally determined to be approximately 40 nm at room temperature. 42 The soft CoFe 2 phase exhibits a record-high specific saturation magnetisation of σ s = 240 Am 2 /kg (emu/g).…”

A ternary nanocomposite fibrous scaffold composed of poly(ε‐caprolactone)/Gelatin/Gehlenite (Ca2Al2SiO7): Physical, chemical, and biological properties in vitro

“…The surface hydrophilicity of a biomaterial generally plays a key role in how the biomaterial would interact with its surrounding medium in which it is implanted; it affects the biomaterial's physical, chemical, and biological properties—degradation, bioactivity, mechanical properties, cell viability, attachment, etc 40‐42 . Herein, the water contact angle on the surface of PCL, PCL/GT, and PCL/GT/GLN7% fibrous scaffolds was measured after 2, 5, and 10 seconds and the results are indicated through Figure 6.…”