Ahmadpour Farnoush, Ganjali Fatemeh, Radinekiyan Fateme, Eivazzadeh-Keihan Reza, Salimibani Milad, Bahreinizad Hossein, Mahdavi Mohammad, Maleki Ali
Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran
Department of Optics and Photonics, Wroclaw University of Science and Technology Wroclaw Poland.
RSC Adv. 2024 Apr 25;14(19):13676-13684. doi: 10.1039/d3ra08067f. eCollection 2024 Apr 22.
Herein, a new magnetic nanobiocomposite based on a synthesized cross-linked pectin-cellulose hydrogel (cross-linked Pec-Cel hydrogel) substrate was designed and synthesized. The formation of the cross-linked Pec-Cel hydrogel with a calcium chloride agent and its magnetization process caused a new and efficient magnetic nanobiocomposite. Several spectral and analytical techniques, including FTIR, SEM, VSM, TGA, XRD, and EDX analyses, were performed to confirm and characterize the structural features of the magnetic cross-linked pectin-cellulose hydrogel nanobiocomposite (magnetic cross-linked Pec-Cel hydrogel nanobiocomposite). Based on SEM images, prepared FeO magnetic nanoparticles (MNPs) were uniformly dispersed in the Pec-Cel hydrogel context, representing an average particle size between 50.0 and 60.0 nm. The XRD pattern also confirms the crystallinity of the magnetic nanobiocomposite. All constituent elements and their distribution have been depicted in the EDX analysis of the magnetic nanobiocomposite. VSM curves confirmed the superparamagnetic behavior of FeO MNPs and the magnetic nanobiocomposite with a saturation magnetization of 77.31 emu g and 48.80 emu g, respectively. The thermal stability of the nanobiocomposite was authenticated to 800 °C based on the TGA thermogram. Apart from analyzing the structural properties of the magnetic cross-linked Pec-Cel hydrogel nanobiocomposite, different concentrations (0.5 mg mL, 1.0 mg mL, 2.0 mg mL, 5.0 mg mL, and 10.0 mg mL) of this new magnetic nanostructure were exposed to an alternating magnetic field (AMF) at different frequencies (100.0 MHz, 200.0 MHz, 300.0 MHz, and 400.0 MHz) to evaluate its capacity for an hyperthermia process; in addition, the highest specific absorption rate (126.0 W g) was obtained by the least magnetic nanobiocomposite concentration (0.5 mg mL).
在此，设计并合成了一种基于合成的交联果胶 - 纤维素水凝胶（交联Pec - Cel水凝胶）基质的新型磁性纳米生物复合材料。氯化钙试剂形成交联Pec - Cel水凝胶及其磁化过程产生了一种新型高效的磁性纳米生物复合材料。采用了几种光谱和分析技术，包括傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、振动样品磁强计（VSM）、热重分析（TGA）、X射线衍射（XRD）和能谱分析（EDX），以确认和表征磁性交联果胶 - 纤维素水凝胶纳米生物复合材料（磁性交联Pec - Cel水凝胶纳米生物复合材料）的结构特征。基于扫描电子显微镜图像，制备的FeO磁性纳米颗粒（MNPs）均匀分散在Pec - Cel水凝胶环境中，平均粒径在50.0至60.0纳米之间。XRD图谱也证实了磁性纳米生物复合材料的结晶性。磁性纳米生物复合材料的能谱分析描绘了所有组成元素及其分布。VSM曲线证实了FeO MNPs和磁性纳米生物复合材料的超顺磁性行为，其饱和磁化强度分别为77.31 emu g和48.80 emu g。基于热重分析热谱图，纳米生物复合材料的热稳定性经鉴定可达800℃。除了分析磁性交联Pec - Cel水凝胶纳米生物复合材料的结构性质外，还将这种新型磁性纳米结构的不同浓度（0.5 mg/mL、1.0 mg/mL、2.0 mg/mL、5.0 mg/mL和10.0 mg/mL）暴露于不同频率（100.0 MHz、200.0 MHz、300.0 MHz和400.0 MHz）的交变磁场（AMF）中，以评估其热疗过程的能力；此外，最低磁性纳米生物复合材料浓度（0.5 mg/mL）获得了最高比吸收率（126.0 W/g）。
