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MgFe水滑石作为粉末以及分散在角蛋白基质薄膜中的磁性分析

Magnetic Analysis of MgFe Hydrotalcites as Powder and Dispersed in Thin Films within a Keratin Matrix.

作者信息

Dinelli Franco, Modestino Michele, Galluzzi Armando, Posati Tamara, Seri Mirko, Zamboni Roberto, Sotgiu Giovanna, Polichetti Massimiliano

机构信息

Istituto Nazionale di Ottica (INO) CNR, via Moruzzi 1, 56124 Pisa, Italy.

Dipartimento di Fisica, Università di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy.

出版信息

Nanomaterials (Basel). 2023 Jul 8;13(14):2029. doi: 10.3390/nano13142029.

DOI:10.3390/nano13142029
PMID:37513040
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10384693/
Abstract

Hydrotalcites (HTlcs) are a class of nanostructured layered materials that may be employed in a variety of applications, from green to bio technologies. In this paper, we report an investigation on HTlcs made of Mg and Fe, recently employed to improve the growth in vitro of osteoblasts within a keratin sponge. We carried out an analysis of powder materials and of HTlcs dispersed in keratin and spin-coated on a Si/SiO substrate at different temperatures. A magnetic study of the powders was carried out with a Quantum Design Physical Property Measurement System equipped with a Vibrating Sample Magnetometer. The data gathered prove that these HTlcs are fully paramagnetic, and keratin showed a very small magnetic response. Optical and Atomic Force Microscopy analyses of the thin films provide a detailed picture of clusters randomly dispersed in the films with various dimensions. The magnetic properties of these films were characterized using the Nano Magneto Optical Kerr Effect (NanoMOKE) down to 7.5 K. The data collected show that the local magnetic properties can be mapped with a micrometric resolution distinguishing HTlc regions from keratin ones. This approach opens new perspectives in the characterization of these composite materials.

摘要

水滑石（HTlcs）是一类纳米结构的层状材料，可应用于从绿色技术到生物技术等各种领域。在本文中，我们报告了一项关于由镁和铁制成的水滑石的研究，这种水滑石最近被用于促进角质海绵中骨细胞的体外生长。我们对粉末材料以及在不同温度下分散在角质中并旋涂在硅/二氧化硅衬底上的水滑石进行了分析。使用配备振动样品磁强计的量子设计物理性质测量系统对粉末进行了磁性研究。收集到的数据证明这些水滑石完全是顺磁性的，而角质显示出非常小的磁响应。对薄膜进行的光学和原子力显微镜分析提供了随机分散在薄膜中的各种尺寸团簇的详细图像。利用纳米磁光克尔效应（NanoMOKE）对这些薄膜的磁性进行了表征，温度低至7.5K。收集到的数据表明，可以以微米级分辨率绘制局部磁性，区分水滑石区域和角质区域。这种方法为这些复合材料的表征开辟了新的前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/d6c63180ce54/nanomaterials-13-02029-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/13b28972d017/nanomaterials-13-02029-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/c35acdadf126/nanomaterials-13-02029-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/7178253f8730/nanomaterials-13-02029-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/abdc24b402f3/nanomaterials-13-02029-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/eeba67da3be5/nanomaterials-13-02029-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/c949600e1c06/nanomaterials-13-02029-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/74eafb7a61bc/nanomaterials-13-02029-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/dd64f1b4a289/nanomaterials-13-02029-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/1eac06988cae/nanomaterials-13-02029-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/49d295e58678/nanomaterials-13-02029-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/af43f5470c62/nanomaterials-13-02029-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/d6c63180ce54/nanomaterials-13-02029-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/13b28972d017/nanomaterials-13-02029-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/c35acdadf126/nanomaterials-13-02029-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/7178253f8730/nanomaterials-13-02029-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/abdc24b402f3/nanomaterials-13-02029-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/eeba67da3be5/nanomaterials-13-02029-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/c949600e1c06/nanomaterials-13-02029-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/74eafb7a61bc/nanomaterials-13-02029-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/dd64f1b4a289/nanomaterials-13-02029-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/1eac06988cae/nanomaterials-13-02029-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/49d295e58678/nanomaterials-13-02029-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/af43f5470c62/nanomaterials-13-02029-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fd6/10384693/d6c63180ce54/nanomaterials-13-02029-g012.jpg

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