Effect of citric acid content on magnetic property of magnetite particles for detecting virus

Masami Hashimoto; Seiji Takahashi; Koichi Kawahara; Daisaku Yokoe; Takeharu Kato; Tomoyuki Ogawa; Masakazu Kawashita; Hiroyasu Kanetaka

doi:10.2109/jcersj2.22098

Effect of citric acid content on magnetic property of magnetite particles for detecting virus

Masami Hashimoto, Seiji Takahashi, Koichi Kawahara, Daisaku Yokoe, Takeharu Kato, Tomoyuki Ogawa, Masakazu Kawashita, Hiroyasu Kanetaka

Research output: Contribution to journal › Article › peer-review

Abstract

The magnetic particles with high saturation magnetization and superparamagnetism are needed to detect highly sensitive viruses. The magnetic property of magnetite (Fe₃O₄) particles synthesized by spray pyrolysis and a subsequent heating process depended on the citric acid content. The magnetic particles consist of nano-sized Fe₃O₄ crystallite about 10 nm in diameter and the decomposed C with high dispersion. The edge-to-edge separation of the crystallites is about 8 nm. As a result, the superparamagnetic Fe₃O₄ particles can be synthesized. The saturation magnetization of the synthesized beads (51 A·m² kg^-1) is much higher than that of commercial magnetic microbeads (17 A·m² kg^-1), and the coercive force is 0.24 kA m^-1. Superparamagnetism can likely be attained because of the high dispersion of Fe₃O₄ crystallites below 10 nm in diameter. The Fe₃O₄ crystallites did not magnetically interact with each other. These unique Fe₃O₄ particles may hold promise as magnetic particles for enzyme immobilization due to the high possibility of antibody bonding and the ease of separation by magnetic fields.

Original language	English
Pages (from-to)	882-888
Number of pages	7
Journal	Journal of the Ceramic Society of Japan
Volume	130
Issue number	11
DOIs	https://doi.org/10.2109/jcersj2.22098
Publication status	Published - 2022 Nov 1

Keywords

Citric acid
Micrometer-sized particle
Spray pyrolysis
Superparamagnetic FeO

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.2109/jcersj2.22098

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title = "Effect of citric acid content on magnetic property of magnetite particles for detecting virus",

abstract = "The magnetic particles with high saturation magnetization and superparamagnetism are needed to detect highly sensitive viruses. The magnetic property of magnetite (Fe3O4) particles synthesized by spray pyrolysis and a subsequent heating process depended on the citric acid content. The magnetic particles consist of nano-sized Fe3O4 crystallite about 10 nm in diameter and the decomposed C with high dispersion. The edge-to-edge separation of the crystallites is about 8 nm. As a result, the superparamagnetic Fe3O4 particles can be synthesized. The saturation magnetization of the synthesized beads (51 A·m2 kg-1) is much higher than that of commercial magnetic microbeads (17 A·m2 kg-1), and the coercive force is 0.24 kA m-1. Superparamagnetism can likely be attained because of the high dispersion of Fe3O4 crystallites below 10 nm in diameter. The Fe3O4 crystallites did not magnetically interact with each other. These unique Fe3O4 particles may hold promise as magnetic particles for enzyme immobilization due to the high possibility of antibody bonding and the ease of separation by magnetic fields.",

keywords = "Citric acid, Micrometer-sized particle, Spray pyrolysis, Superparamagnetic FeO",

author = "Masami Hashimoto and Seiji Takahashi and Koichi Kawahara and Daisaku Yokoe and Takeharu Kato and Tomoyuki Ogawa and Masakazu Kawashita and Hiroyasu Kanetaka",

note = "Funding Information: Acknowledgments This research was supported in part by AMED under Grant Number A239. Publisher Copyright: {\textcopyright}2022 The Ceramic Society of Japan. All rights reserved.",

year = "2022",

month = nov,

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doi = "10.2109/jcersj2.22098",

language = "English",

volume = "130",

pages = "882--888",

journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",

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AU - Hashimoto, Masami

AU - Takahashi, Seiji

AU - Kawahara, Koichi

AU - Yokoe, Daisaku

AU - Kato, Takeharu

AU - Ogawa, Tomoyuki

AU - Kawashita, Masakazu

AU - Kanetaka, Hiroyasu

PY - 2022/11/1

Y1 - 2022/11/1

N2 - The magnetic particles with high saturation magnetization and superparamagnetism are needed to detect highly sensitive viruses. The magnetic property of magnetite (Fe3O4) particles synthesized by spray pyrolysis and a subsequent heating process depended on the citric acid content. The magnetic particles consist of nano-sized Fe3O4 crystallite about 10 nm in diameter and the decomposed C with high dispersion. The edge-to-edge separation of the crystallites is about 8 nm. As a result, the superparamagnetic Fe3O4 particles can be synthesized. The saturation magnetization of the synthesized beads (51 A·m2 kg-1) is much higher than that of commercial magnetic microbeads (17 A·m2 kg-1), and the coercive force is 0.24 kA m-1. Superparamagnetism can likely be attained because of the high dispersion of Fe3O4 crystallites below 10 nm in diameter. The Fe3O4 crystallites did not magnetically interact with each other. These unique Fe3O4 particles may hold promise as magnetic particles for enzyme immobilization due to the high possibility of antibody bonding and the ease of separation by magnetic fields.

AB - The magnetic particles with high saturation magnetization and superparamagnetism are needed to detect highly sensitive viruses. The magnetic property of magnetite (Fe3O4) particles synthesized by spray pyrolysis and a subsequent heating process depended on the citric acid content. The magnetic particles consist of nano-sized Fe3O4 crystallite about 10 nm in diameter and the decomposed C with high dispersion. The edge-to-edge separation of the crystallites is about 8 nm. As a result, the superparamagnetic Fe3O4 particles can be synthesized. The saturation magnetization of the synthesized beads (51 A·m2 kg-1) is much higher than that of commercial magnetic microbeads (17 A·m2 kg-1), and the coercive force is 0.24 kA m-1. Superparamagnetism can likely be attained because of the high dispersion of Fe3O4 crystallites below 10 nm in diameter. The Fe3O4 crystallites did not magnetically interact with each other. These unique Fe3O4 particles may hold promise as magnetic particles for enzyme immobilization due to the high possibility of antibody bonding and the ease of separation by magnetic fields.

KW - Citric acid

KW - Micrometer-sized particle

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KW - Superparamagnetic FeO

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Effect of citric acid content on magnetic property of magnetite particles for detecting virus

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