New trends in nanoparticles: syntheses and their applications to fuel cells, health care, and magnetic storage

Tetsuya Osaka, Hlronori Ilda, Satoshi Tominaka, Takuma Hachisu

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This paper reviews important research on chemical and electrochemical synthesis and application of nanoparticles, especially our recent results in this field: (i) catalytic metal nanoparticles for micro-fuel cells, (ii) magnetic oxide nanoparticles for drug delivery systems, and (iii) magnetic metal nanoparticles for magnetic recording media. To fulfill the requirements of each application, we chose and modified those synthetic methods for obtaining suitable properties, e.g., morphology, catalytic activity, and magnetic properties, (i) For micro-fuel cells, electrodeposition is attractive because of its selective deposition onto current collectors and possible elimination of an annealing process. As a result, we have successfully synthesized Pt, PtRu alloy, and PdCo alloy, which consisted of dendritic structures macroscopically and of interconnected nanoparticles microscopically, (ii) For drug delivery systems, since magnetic nanoparticles should possess ferromagnetism, be dispersible in water, and be nontoxic, Fe3O4 nanoparticles synthesized by hydrolysis in aqueous media are suitable. As a result, we have successfully controlled the size (10-40 nm in diameter) and the magnetic properties of Fe3O4 nanoparticles by means of adjusting the molar ratio of ferrous to ferric ions in the precursor solution, (iii) For magnetic recording materials, since magnetic nanoparticles should possess high coercivity, a controlled shape, and a uniform small size, we have modified a chemical method for synthesizing FePt by adjusting the growth temperature. As a result, we have succeeded in synthesizing FePt nanoparticles with a controlled shape (cubic) and a uniform size (ca. 5.6 nm).

Original languageEnglish
Pages (from-to)333-347
Number of pages15
JournalIsrael Journal of Chemistry
Volume48
Issue number3-4
DOIs
Publication statusPublished - 2008

Fingerprint

Magnetic storage
Health care
Fuel cells
Nanoparticles
Magnetic recording
Metal nanoparticles
Magnetic properties
Ferromagnetism
Magnetic materials
Growth temperature
Coercive force
Electrodeposition
Oxides
Hydrolysis
Catalyst activity
Annealing
Ions
Water

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

New trends in nanoparticles : syntheses and their applications to fuel cells, health care, and magnetic storage. / Osaka, Tetsuya; Ilda, Hlronori; Tominaka, Satoshi; Hachisu, Takuma.

In: Israel Journal of Chemistry, Vol. 48, No. 3-4, 2008, p. 333-347.

Research output: Contribution to journalArticle

Osaka, Tetsuya ; Ilda, Hlronori ; Tominaka, Satoshi ; Hachisu, Takuma. / New trends in nanoparticles : syntheses and their applications to fuel cells, health care, and magnetic storage. In: Israel Journal of Chemistry. 2008 ; Vol. 48, No. 3-4. pp. 333-347.
@article{0cf566d327ce4a60939533e99f166fe5,
title = "New trends in nanoparticles: syntheses and their applications to fuel cells, health care, and magnetic storage",
abstract = "This paper reviews important research on chemical and electrochemical synthesis and application of nanoparticles, especially our recent results in this field: (i) catalytic metal nanoparticles for micro-fuel cells, (ii) magnetic oxide nanoparticles for drug delivery systems, and (iii) magnetic metal nanoparticles for magnetic recording media. To fulfill the requirements of each application, we chose and modified those synthetic methods for obtaining suitable properties, e.g., morphology, catalytic activity, and magnetic properties, (i) For micro-fuel cells, electrodeposition is attractive because of its selective deposition onto current collectors and possible elimination of an annealing process. As a result, we have successfully synthesized Pt, PtRu alloy, and PdCo alloy, which consisted of dendritic structures macroscopically and of interconnected nanoparticles microscopically, (ii) For drug delivery systems, since magnetic nanoparticles should possess ferromagnetism, be dispersible in water, and be nontoxic, Fe3O4 nanoparticles synthesized by hydrolysis in aqueous media are suitable. As a result, we have successfully controlled the size (10-40 nm in diameter) and the magnetic properties of Fe3O4 nanoparticles by means of adjusting the molar ratio of ferrous to ferric ions in the precursor solution, (iii) For magnetic recording materials, since magnetic nanoparticles should possess high coercivity, a controlled shape, and a uniform small size, we have modified a chemical method for synthesizing FePt by adjusting the growth temperature. As a result, we have succeeded in synthesizing FePt nanoparticles with a controlled shape (cubic) and a uniform size (ca. 5.6 nm).",
author = "Tetsuya Osaka and Hlronori Ilda and Satoshi Tominaka and Takuma Hachisu",
year = "2008",
doi = "10.1560/1JC.48.3-4.333",
language = "English",
volume = "48",
pages = "333--347",
journal = "Israel Journal of Chemistry",
issn = "0021-2148",
publisher = "Wiley-VCH Verlag",
number = "3-4",

}

TY - JOUR

T1 - New trends in nanoparticles

T2 - syntheses and their applications to fuel cells, health care, and magnetic storage

AU - Osaka, Tetsuya

AU - Ilda, Hlronori

AU - Tominaka, Satoshi

AU - Hachisu, Takuma

PY - 2008

Y1 - 2008

N2 - This paper reviews important research on chemical and electrochemical synthesis and application of nanoparticles, especially our recent results in this field: (i) catalytic metal nanoparticles for micro-fuel cells, (ii) magnetic oxide nanoparticles for drug delivery systems, and (iii) magnetic metal nanoparticles for magnetic recording media. To fulfill the requirements of each application, we chose and modified those synthetic methods for obtaining suitable properties, e.g., morphology, catalytic activity, and magnetic properties, (i) For micro-fuel cells, electrodeposition is attractive because of its selective deposition onto current collectors and possible elimination of an annealing process. As a result, we have successfully synthesized Pt, PtRu alloy, and PdCo alloy, which consisted of dendritic structures macroscopically and of interconnected nanoparticles microscopically, (ii) For drug delivery systems, since magnetic nanoparticles should possess ferromagnetism, be dispersible in water, and be nontoxic, Fe3O4 nanoparticles synthesized by hydrolysis in aqueous media are suitable. As a result, we have successfully controlled the size (10-40 nm in diameter) and the magnetic properties of Fe3O4 nanoparticles by means of adjusting the molar ratio of ferrous to ferric ions in the precursor solution, (iii) For magnetic recording materials, since magnetic nanoparticles should possess high coercivity, a controlled shape, and a uniform small size, we have modified a chemical method for synthesizing FePt by adjusting the growth temperature. As a result, we have succeeded in synthesizing FePt nanoparticles with a controlled shape (cubic) and a uniform size (ca. 5.6 nm).

AB - This paper reviews important research on chemical and electrochemical synthesis and application of nanoparticles, especially our recent results in this field: (i) catalytic metal nanoparticles for micro-fuel cells, (ii) magnetic oxide nanoparticles for drug delivery systems, and (iii) magnetic metal nanoparticles for magnetic recording media. To fulfill the requirements of each application, we chose and modified those synthetic methods for obtaining suitable properties, e.g., morphology, catalytic activity, and magnetic properties, (i) For micro-fuel cells, electrodeposition is attractive because of its selective deposition onto current collectors and possible elimination of an annealing process. As a result, we have successfully synthesized Pt, PtRu alloy, and PdCo alloy, which consisted of dendritic structures macroscopically and of interconnected nanoparticles microscopically, (ii) For drug delivery systems, since magnetic nanoparticles should possess ferromagnetism, be dispersible in water, and be nontoxic, Fe3O4 nanoparticles synthesized by hydrolysis in aqueous media are suitable. As a result, we have successfully controlled the size (10-40 nm in diameter) and the magnetic properties of Fe3O4 nanoparticles by means of adjusting the molar ratio of ferrous to ferric ions in the precursor solution, (iii) For magnetic recording materials, since magnetic nanoparticles should possess high coercivity, a controlled shape, and a uniform small size, we have modified a chemical method for synthesizing FePt by adjusting the growth temperature. As a result, we have succeeded in synthesizing FePt nanoparticles with a controlled shape (cubic) and a uniform size (ca. 5.6 nm).

UR - http://www.scopus.com/inward/record.url?scp=59449087916&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=59449087916&partnerID=8YFLogxK

U2 - 10.1560/1JC.48.3-4.333

DO - 10.1560/1JC.48.3-4.333

M3 - Article

AN - SCOPUS:59449087916

VL - 48

SP - 333

EP - 347

JO - Israel Journal of Chemistry

JF - Israel Journal of Chemistry

SN - 0021-2148

IS - 3-4

ER -