Preparation of solid nickel nanoparticles by large-scale spray pyrolysis of Ni(NO3)2·6H2O precursor: Effect of temperature and nickel acetate on the particle morphology

Kyeong Youl Jung, Jong Ho Lee, Hye Young Koo, Yun Chan Kang, Seung Bin Park

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Spherical nickel nanoparticles were prepared by a large-scale spray pyrolysis process with two continuous reactors and were investigated in terms of particle-formation mechanism, surface property, particle shape, and size with changing the temperature of two continuous reactors and the type of precursor. When nickel nitrate was used as a precursor and the second reactor temperature was over 1200 °C, solid Ni particles were obtained, but many ultra-fine particles of less than tens nanometer were simultaneously formed via a gas-to-particle conversion mechanism. The formation of such ultra-fine particles was reduced by making hollow particles in the first reactor at 500 °C and thereafter densifying them in the second reactor at 1400 °C, but could not completely prevent. The addition of about 5-10 mol% nickel acetate instead nitrate precursor was found to be very effective to avoid the formation of such ultra-fine particles as well as producing solid particles with clean and smooth surface. On the basis of the results obtained, a mechanism of particle formation in the large-scale spray pyrolysis was proposed. Finally, spherical and solid nickel nanoparticles, which had clean surface and high density (larger than 8.4 g/cm3), were prepared from the mixed precursor (nitrate/acetate) at a residence time of about 3 s without any chemical additive.

Original languageEnglish
Pages (from-to)10-19
Number of pages10
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume137
Issue number1-3
DOIs
Publication statusPublished - 2007 Feb 25
Externally publishedYes

Fingerprint

Spray pyrolysis
Nickel
pyrolysis
sprayers
acetates
nickel
Nanoparticles
Nitrates
nanoparticles
preparation
reactors
Temperature
Surface properties
temperature
Acetates
nitrates
Gases
nickel acetate
surface properties
hollow

Keywords

  • Electrode
  • MLCC
  • Nanoparticle
  • Nickel
  • Spray pyrolysis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{d027776a210a4405ac5766d39a9e6aa3,
title = "Preparation of solid nickel nanoparticles by large-scale spray pyrolysis of Ni(NO3)2·6H2O precursor: Effect of temperature and nickel acetate on the particle morphology",
abstract = "Spherical nickel nanoparticles were prepared by a large-scale spray pyrolysis process with two continuous reactors and were investigated in terms of particle-formation mechanism, surface property, particle shape, and size with changing the temperature of two continuous reactors and the type of precursor. When nickel nitrate was used as a precursor and the second reactor temperature was over 1200 °C, solid Ni particles were obtained, but many ultra-fine particles of less than tens nanometer were simultaneously formed via a gas-to-particle conversion mechanism. The formation of such ultra-fine particles was reduced by making hollow particles in the first reactor at 500 °C and thereafter densifying them in the second reactor at 1400 °C, but could not completely prevent. The addition of about 5-10 mol{\%} nickel acetate instead nitrate precursor was found to be very effective to avoid the formation of such ultra-fine particles as well as producing solid particles with clean and smooth surface. On the basis of the results obtained, a mechanism of particle formation in the large-scale spray pyrolysis was proposed. Finally, spherical and solid nickel nanoparticles, which had clean surface and high density (larger than 8.4 g/cm3), were prepared from the mixed precursor (nitrate/acetate) at a residence time of about 3 s without any chemical additive.",
keywords = "Electrode, MLCC, Nanoparticle, Nickel, Spray pyrolysis",
author = "Jung, {Kyeong Youl} and Lee, {Jong Ho} and Koo, {Hye Young} and Kang, {Yun Chan} and Park, {Seung Bin}",
year = "2007",
month = "2",
day = "25",
doi = "10.1016/j.mseb.2006.09.025",
language = "English",
volume = "137",
pages = "10--19",
journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",
issn = "0921-5107",
publisher = "Elsevier BV",
number = "1-3",

}

TY - JOUR

T1 - Preparation of solid nickel nanoparticles by large-scale spray pyrolysis of Ni(NO3)2·6H2O precursor

T2 - Effect of temperature and nickel acetate on the particle morphology

AU - Jung, Kyeong Youl

AU - Lee, Jong Ho

AU - Koo, Hye Young

AU - Kang, Yun Chan

AU - Park, Seung Bin

PY - 2007/2/25

Y1 - 2007/2/25

N2 - Spherical nickel nanoparticles were prepared by a large-scale spray pyrolysis process with two continuous reactors and were investigated in terms of particle-formation mechanism, surface property, particle shape, and size with changing the temperature of two continuous reactors and the type of precursor. When nickel nitrate was used as a precursor and the second reactor temperature was over 1200 °C, solid Ni particles were obtained, but many ultra-fine particles of less than tens nanometer were simultaneously formed via a gas-to-particle conversion mechanism. The formation of such ultra-fine particles was reduced by making hollow particles in the first reactor at 500 °C and thereafter densifying them in the second reactor at 1400 °C, but could not completely prevent. The addition of about 5-10 mol% nickel acetate instead nitrate precursor was found to be very effective to avoid the formation of such ultra-fine particles as well as producing solid particles with clean and smooth surface. On the basis of the results obtained, a mechanism of particle formation in the large-scale spray pyrolysis was proposed. Finally, spherical and solid nickel nanoparticles, which had clean surface and high density (larger than 8.4 g/cm3), were prepared from the mixed precursor (nitrate/acetate) at a residence time of about 3 s without any chemical additive.

AB - Spherical nickel nanoparticles were prepared by a large-scale spray pyrolysis process with two continuous reactors and were investigated in terms of particle-formation mechanism, surface property, particle shape, and size with changing the temperature of two continuous reactors and the type of precursor. When nickel nitrate was used as a precursor and the second reactor temperature was over 1200 °C, solid Ni particles were obtained, but many ultra-fine particles of less than tens nanometer were simultaneously formed via a gas-to-particle conversion mechanism. The formation of such ultra-fine particles was reduced by making hollow particles in the first reactor at 500 °C and thereafter densifying them in the second reactor at 1400 °C, but could not completely prevent. The addition of about 5-10 mol% nickel acetate instead nitrate precursor was found to be very effective to avoid the formation of such ultra-fine particles as well as producing solid particles with clean and smooth surface. On the basis of the results obtained, a mechanism of particle formation in the large-scale spray pyrolysis was proposed. Finally, spherical and solid nickel nanoparticles, which had clean surface and high density (larger than 8.4 g/cm3), were prepared from the mixed precursor (nitrate/acetate) at a residence time of about 3 s without any chemical additive.

KW - Electrode

KW - MLCC

KW - Nanoparticle

KW - Nickel

KW - Spray pyrolysis

UR - http://www.scopus.com/inward/record.url?scp=33846850133&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846850133&partnerID=8YFLogxK

U2 - 10.1016/j.mseb.2006.09.025

DO - 10.1016/j.mseb.2006.09.025

M3 - Article

AN - SCOPUS:33846850133

VL - 137

SP - 10

EP - 19

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

SN - 0921-5107

IS - 1-3

ER -