Influence of calcination parameters on the microstructure, magnetic and hyperthermia properties of Zn-Co ferrite nanoparticles

IF 1.7 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Electroceramics Pub Date : 2022-04-05 DOI:10.1007/s10832-022-00281-y

Behrouz Shahbahrami, Sayed Mahmood Rabiee, Reza Shidpour, Hamed Salimi-Kenari

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Abstract

Magnetic nanoparticles (NPs) are of interest for use in magnetic hyperthermia. To achieve high efficient NPs as a heating agent, it is important to know the effect of processing parameters on the synthesis, microstructure and magnetic properties of NPs and their relationship with the systems’ specific loss power (SLP). In the present study, zinc cobalt ferrite NPs were precipitated using the co-precipitation method, and calcined at 550, 650 and 750 °C for 1 and 2 h. Then to evaluate their hyperthermia properties, ferrofluids of neat and PEGylated NPs (NPs@PEG) were studied. The analysis of X-ray diffraction (XRD), field emission electron microscopy (FESEM), vibrating sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), zeta potential and transmission electron microscopy (TEM) were used to characterize the NPs. It was found that the processing parameters had a significant effect on the microstructure, magnetic and hyperthermia properties of the synthesized NPs. With increasing the time and temperature of calcination, particle size and magnetic properties like anisotropic constant, magnetic moment and saturation magnetization increased too. Hyperthermia results showed that the synthesized NPs at 550 °C for 2 h produced more heat than the other samples. It was also found that the concentration of NPs had a great influence on the heat generated by the prepared ferrofluids. Ferrofluids containing 5 mg/ml of NPs synthesized at 550 °C for 2 h had the highest heating efficiency such that the SLP value of NPs and NPs@PEG was 139.3 and 83.6 W/g, respectively.

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煅烧参数对Zn-Co铁氧体纳米颗粒微观结构、磁性和热疗性能的影响

磁性纳米颗粒(NPs)对磁热疗的应用很感兴趣。为了获得高效的NPs作为加热剂，了解工艺参数对NPs的合成、微观结构和磁性能的影响及其与系统比损耗功率(SLP)的关系是很重要的。在本研究中，锌钴铁氧体NPs采用共沉淀法沉淀，并在550、650和750℃下煅烧1和2小时。然后，研究了纯铁流体和聚乙二醇化NPs (NPs@PEG)的热稳定性。利用x射线衍射(XRD)、场发射电子显微镜(FESEM)、振动样品磁强计(VSM)、傅里叶红外光谱(FTIR)、zeta电位和透射电子显微镜(TEM)对NPs进行了表征。研究发现，工艺参数对合成的纳米粒子的微观结构、磁性和热疗性能有显著影响。随着煅烧时间和温度的增加，颗粒尺寸和各向异性常数、磁矩、饱和磁化强度等磁性能均增大。热疗结果表明，合成的NPs在550℃下加热2 h产生的热量高于其他样品。还发现NPs的浓度对制备的铁磁流体的发热量有很大的影响。含5mg /ml NPs的铁磁流体在550℃下合成2h的热效率最高，NPs和NPs@PEG的SLP值分别为139.3和83.6 W/g。

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来源期刊

Journal of Electroceramics 工程技术-材料科学：硅酸盐

CiteScore

2.80

自引率

5.90%

发文量

审稿时长

5.7 months

期刊介绍： While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including: -insulating to metallic and fast ion conductivity -piezo-, ferro-, and pyro-electricity -electro- and nonlinear optical properties -feromagnetism. When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice. The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.