Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric Acid

Cobalt nanoparticles were produced by employing the liquid-phase reduction method and hydrazine. The effect of citric acid additives on the formation and growth mechanism of cobalt nanoparticles was investigated using polarization methods. The cobalt nanoparticles produced in 0.2 M cobalt sulfate an...

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Main Authors: S. A. Salman, T. Usami, K. Kuroda, M. Okido
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Journal of Nanotechnology
Online Access:http://dx.doi.org/10.1155/2014/525193
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author S. A. Salman
T. Usami
K. Kuroda
M. Okido
author_facet S. A. Salman
T. Usami
K. Kuroda
M. Okido
author_sort S. A. Salman
collection DOAJ
description Cobalt nanoparticles were produced by employing the liquid-phase reduction method and hydrazine. The effect of citric acid additives on the formation and growth mechanism of cobalt nanoparticles was investigated using polarization methods. The cobalt nanoparticles produced in 0.2 M cobalt sulfate and 5 M hydrazine at 298 K had a spherical shape with a diameter of 400 nm. The dendritic nanoparticles formed with the decreasing of hydrazine concentration at 298 K. On the other hand, dendritic large particles are confirmed at 353 K. It was confirmed that the reduction reaction progressed with the addition of citric acid, and a hexagonal close-packed (εCo) phase was formed.
format Article
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language English
publishDate 2014-01-01
publisher Wiley
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series Journal of Nanotechnology
spelling doaj-art-b064409b8eff4faab1aab9054d0f78262025-02-03T06:12:02ZengWileyJournal of Nanotechnology1687-95031687-95112014-01-01201410.1155/2014/525193525193Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric AcidS. A. Salman0T. Usami1K. Kuroda2M. Okido3EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, JapanGraduate School of Engineering Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanEcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, JapanEcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, JapanCobalt nanoparticles were produced by employing the liquid-phase reduction method and hydrazine. The effect of citric acid additives on the formation and growth mechanism of cobalt nanoparticles was investigated using polarization methods. The cobalt nanoparticles produced in 0.2 M cobalt sulfate and 5 M hydrazine at 298 K had a spherical shape with a diameter of 400 nm. The dendritic nanoparticles formed with the decreasing of hydrazine concentration at 298 K. On the other hand, dendritic large particles are confirmed at 353 K. It was confirmed that the reduction reaction progressed with the addition of citric acid, and a hexagonal close-packed (εCo) phase was formed.http://dx.doi.org/10.1155/2014/525193
spellingShingle S. A. Salman
T. Usami
K. Kuroda
M. Okido
Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric Acid
Journal of Nanotechnology
title Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric Acid
title_full Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric Acid
title_fullStr Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric Acid
title_full_unstemmed Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric Acid
title_short Synthesis and Characterization of Cobalt Nanoparticles Using Hydrazine and Citric Acid
title_sort synthesis and characterization of cobalt nanoparticles using hydrazine and citric acid
url http://dx.doi.org/10.1155/2014/525193
work_keys_str_mv AT sasalman synthesisandcharacterizationofcobaltnanoparticlesusinghydrazineandcitricacid
AT tusami synthesisandcharacterizationofcobaltnanoparticlesusinghydrazineandcitricacid
AT kkuroda synthesisandcharacterizationofcobaltnanoparticlesusinghydrazineandcitricacid
AT mokido synthesisandcharacterizationofcobaltnanoparticlesusinghydrazineandcitricacid