Highly dispersible Fe3O4 nanoparticles via anionic surface modification

2019 ◽  
Vol 57 (1) ◽  
pp. 80-84 ◽  
Author(s):  
Jae Uk Hur ◽  
Jae Seok Choi ◽  
Sung-Churl Choi ◽  
Gye Seok An
2019 ◽  
Vol 45 (17) ◽  
pp. 21395-21400 ◽  
Author(s):  
Jae Uk Hur ◽  
Jin Soon Han ◽  
Jae Rok Shin ◽  
Hye-Yeong Park ◽  
Sung-Churl Choi ◽  
...  

Author(s):  
Aditya D Nugraha ◽  
Ika O Wulandari ◽  
L B Hutami Rahayu ◽  
Imam Riva’i ◽  
D J Djoko H Santojo ◽  
...  

2018 ◽  
Vol 289 ◽  
pp. 228-237 ◽  
Author(s):  
Fanyu Kong ◽  
Xiaodong He ◽  
Qianqian Liu ◽  
Xinxin Qi ◽  
Dongdong Sun ◽  
...  

2015 ◽  
Vol 39 ◽  
pp. 641-648 ◽  
Author(s):  
Maher Abboud ◽  
Sami Youssef ◽  
Jean Podlecki ◽  
Roland Habchi ◽  
Georges Germanos ◽  
...  

Processes ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1795
Author(s):  
Jae Rok Shin ◽  
Gye Seok An ◽  
Sung-Churl Choi

Fe3O4 nanoparticles with cluster structure are superparamagnetic particles with applicability in various high-tech fields. In this study, the influence of surface modification with polyacrylic acid (PAA), a polymeric precursor, on the characteristics of Fe3O4 nanoparticles was investigated. The particles were synthesized by the polyol method and surface modified with various amounts of PAA. The surficial, structural, optical, and magnetic properties of the PAA-modified Fe3O4 nanoparticles were analyzed, confirming that negatively charged carboxyl groups were formed on the particle surface, and the particle dispersibility was enhanced by surface modification. This arises from an increase in the electrostatic repulsive force due to the surface functional groups. Functionalization promoted dissociation of the cluster particles, which became more pronounced as the PAA content increased. The optical parameters changed with the PAA content. Analysis of the magnetic properties showed that the saturation magnetization decreased as the PAA content increased. Overall, PAA modification induces structural changes of the Fe3O4 nanoparticles that enhance the dispersibility and influence the characteristics of the particles.


Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1791 ◽  
Author(s):  
Roxana Cristina Popescu ◽  
Ecaterina Andronescu ◽  
Bogdan Stefan Vasile

Functionalization of nanomaterials can enhance and modulate their properties and behaviour, enabling characteristics suitable for medical applications. Magnetite (Fe3O4) nanoparticles are one of the most popular types of nanomaterials used in this field, and many technologies being already translated in clinical practice. This article makes a summary of the surface modification and functionalization approaches presented lately in the scientific literature for improving or modulating magnetite nanoparticles for their applications in nanomedicine.


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