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采用溶胶-凝胶 Pechini 法自组装 Au-FeO 杂化纳米粒子。

Self-Assembly of Au-FeO Hybrid Nanoparticles Using a Sol-Gel Pechini Method.

机构信息

Instituto de Magnetismo Aplicado, 'Salvador Velayos', UCM-CSIC-ADIF, Las Rozas, P.O. Box 155, 28230 Madrid, Spain.

Servicio de Dosimetría y Radioprotección, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain.

出版信息

Molecules. 2021 Nov 17;26(22):6943. doi: 10.3390/molecules26226943.

DOI:10.3390/molecules26226943
PMID:34834032
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8624103/
Abstract

The Pechini method has been used as a synthetic route for obtaining self-assembling magnetic and plasmonic nanoparticles in hybrid silica nanostructures. This manuscript evaluates the influence of shaking conditions, reaction time, and pH on the size and morphology of the nanostructures produced. The characterization of the nanomaterials was carried out by transmission electron microscopy (TEM) to evaluate the coating and size of the nanomaterials, Fourier-transform infrared spectroscopy (FT-IR) transmission spectra to evaluate the presence of the different coatings, and thermogravimetric analysis (TGA) curves to determine the amount of coating. The results obtained show that the best conditions to obtain core-satellite nanostructures with homogeneous silica shells and controlled sizes (<200 nm) include the use of slightly alkaline media, the ultrasound activation of silica condensation, and reaction times of around 2 h. These findings represent an important framework to establish a new general approach for the click chemistry assembling of inorganic nanostructures.

摘要

皮钦尼法已被用作一种合成途径，用于在混合二氧化硅纳米结构中获得自组装磁性和等离子体纳米粒子。本文评估了振动条件、反应时间和 pH 值对所制备纳米结构的尺寸和形态的影响。通过透射电子显微镜（TEM）对纳米材料进行了表征，以评估纳米材料的涂层和尺寸，通过傅里叶变换红外光谱（FT-IR）透射光谱评估不同涂层的存在，通过热重分析（TGA）曲线确定涂层量。所得结果表明，获得具有均匀二氧化硅壳和受控尺寸（<200nm）的核-卫星纳米结构的最佳条件包括使用略碱性介质、超声激活二氧化硅缩合以及反应时间约 2 小时。这些发现为点击化学组装无机纳米结构提供了一个重要的框架，代表了一种新的通用方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/43d219db2340/molecules-26-06943-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/4e735ed3e629/molecules-26-06943-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/83f577675ee3/molecules-26-06943-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/702bb7756ff9/molecules-26-06943-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/f4732b0e7dce/molecules-26-06943-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/b00251793a5c/molecules-26-06943-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/fdadce050e98/molecules-26-06943-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/0afbe64d3a3d/molecules-26-06943-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/43d219db2340/molecules-26-06943-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/4e735ed3e629/molecules-26-06943-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/83f577675ee3/molecules-26-06943-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/702bb7756ff9/molecules-26-06943-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/f4732b0e7dce/molecules-26-06943-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/b00251793a5c/molecules-26-06943-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/fdadce050e98/molecules-26-06943-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/0afbe64d3a3d/molecules-26-06943-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d7f0/8624103/43d219db2340/molecules-26-06943-g007.jpg

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本文引用的文献

[1]
Magneto-Optical Nanostructures for Viral Sensing.

Nanomaterials (Basel). 2020-6-29

[2]
Janus Magnetic-Plasmonic Nanoparticles for Magnetically Guided and Thermally Activated Cancer Therapy.

Small. 2020-3

[3]
Electrochemical Synthesis and Magnetic Properties of MFe₂O₄ (M = Fe, Mn, Co, Ni) Nanoparticles for Potential Biomedical Applications.

J Nanosci Nanotechnol. 2019-4-1

[4]
Hybrid nanoparticles for magnetic and plasmonic hyperthermia.

Phys Chem Chem Phys. 2018-9-26

[5]
Synthesis of hybrid magneto-plasmonic nanoparticles with potential use in photoacoustic detection of circulating tumor cells.

Mikrochim Acta. 2018-1-25

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Sol-gel synthesis of thorn-like ZnO nanoparticles endorsing mechanical stirring effect and their antimicrobial activities: Potential role as nano-antibiotics.

Sci Rep. 2016-6-28

[7]
Probing the Structure, Composition, and Spatial Distribution of Ligands on Gold Nanorods.

Nano Lett. 2015-8-28

[8]
Combining magnetic hyperthermia and photodynamic therapy for tumor ablation with photoresponsive magnetic liposomes.

ACS Nano. 2015-2-27

[9]
Germanium oxide removal by citric acid and thiol passivation from citric acid-terminated Ge(100).

Langmuir. 2014-12-2

[10]
Recent progress in low-voltage cathodoluminescent materials: synthesis, improvement and emission properties.

Chem Soc Rev. 2014

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