Copper and copper oxide nanoparticle formation by chemical vapor nucleation from copper (II) acetylacetonate

Albert Nasibulin, Petri Ahonen, Oliver Richard, I. Altman, Esko I. Kauppinen (Corresponding Author)

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Abstract

Crystalline nanometer-size copper and copper (I) oxide particle formation was studied by thermal decomposition of copper acetylacetonate Cu(acac)2 vapor using a vertical flow reactor at ambient nitrogen pressure. The experiments were performed in the precursor vapor pressure range of Pprec = 0.06 to 44 Pa at furnace temperatures of 431.5°C, 596.0°C, and 705.0°C. Agglomerates of primary particles were formed at Pprec0.1 Pa at all temperatures. At 431.5°C the number mean size of the primary particles increased from Dp = 3.7 nm (with geometric standard deviation σg = 1.42) to Dp = 7.2 nm (σg = 1.33) with the increasing precursor vapor particle pressure from 1.8 to 16 Pa. At 705.0°C the primary particle size decreased from Dp = 24.0 nm (σg=1.57) to Dp = 7.6 nm (σg = 1.54), respectively.

At furnace temperatures of 431.5°C and 596.0°C only crystalline copper particles were produced. At 705.0°C the crystalline product of the decomposition depended on the precursor vapor pressure: copper particles were formed at Pprec>10 Pa, copper (I) oxide at Pprecleq 1 Pa, and a mixture of the metal and its oxide at intermediate vapor pressures. A kinetic restriction on copper particle growth was shown, which leads to the main role of Cu2 molecule participation in the particle formation. The formation of copper (I) oxide particles occurs due to the surface reaction of the decomposition products (mainly carbon dioxide). For the explanation of the experimental results, a model is proposed to build a semiempirical phase diagram of the precursor decomposition products.
Original languageEnglish
Pages (from-to)385-400
Number of pages16
JournalJournal of Nanoparticle Research
Volume3
Issue number5-6
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

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Copper oxides
copper oxides
Nucleation
Copper
Nanoparticles
Oxides
Vapor pressure
Vapors
nucleation
vapors
copper
nanoparticles
Crystalline materials
Decomposition
Precursor
Furnaces
Decompose
vapor pressure
Surface reactions
Furnace

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Nasibulin, Albert ; Ahonen, Petri ; Richard, Oliver ; Altman, I. ; Kauppinen, Esko I. / Copper and copper oxide nanoparticle formation by chemical vapor nucleation from copper (II) acetylacetonate. In: Journal of Nanoparticle Research. 2001 ; Vol. 3, No. 5-6. pp. 385-400.
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title = "Copper and copper oxide nanoparticle formation by chemical vapor nucleation from copper (II) acetylacetonate",
abstract = "Crystalline nanometer-size copper and copper (I) oxide particle formation was studied by thermal decomposition of copper acetylacetonate Cu(acac)2 vapor using a vertical flow reactor at ambient nitrogen pressure. The experiments were performed in the precursor vapor pressure range of Pprec = 0.06 to 44 Pa at furnace temperatures of 431.5°C, 596.0°C, and 705.0°C. Agglomerates of primary particles were formed at Pprec0.1 Pa at all temperatures. At 431.5°C the number mean size of the primary particles increased from Dp = 3.7 nm (with geometric standard deviation σg = 1.42) to Dp = 7.2 nm (σg = 1.33) with the increasing precursor vapor particle pressure from 1.8 to 16 Pa. At 705.0°C the primary particle size decreased from Dp = 24.0 nm (σg=1.57) to Dp = 7.6 nm (σg = 1.54), respectively.At furnace temperatures of 431.5°C and 596.0°C only crystalline copper particles were produced. At 705.0°C the crystalline product of the decomposition depended on the precursor vapor pressure: copper particles were formed at Pprec>10 Pa, copper (I) oxide at Pprecleq 1 Pa, and a mixture of the metal and its oxide at intermediate vapor pressures. A kinetic restriction on copper particle growth was shown, which leads to the main role of Cu2 molecule participation in the particle formation. The formation of copper (I) oxide particles occurs due to the surface reaction of the decomposition products (mainly carbon dioxide). For the explanation of the experimental results, a model is proposed to build a semiempirical phase diagram of the precursor decomposition products.",
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Copper and copper oxide nanoparticle formation by chemical vapor nucleation from copper (II) acetylacetonate. / Nasibulin, Albert; Ahonen, Petri; Richard, Oliver; Altman, I.; Kauppinen, Esko I. (Corresponding Author).

In: Journal of Nanoparticle Research, Vol. 3, No. 5-6, 2001, p. 385-400.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Copper and copper oxide nanoparticle formation by chemical vapor nucleation from copper (II) acetylacetonate

AU - Nasibulin, Albert

AU - Ahonen, Petri

AU - Richard, Oliver

AU - Altman, I.

AU - Kauppinen, Esko I.

PY - 2001

Y1 - 2001

N2 - Crystalline nanometer-size copper and copper (I) oxide particle formation was studied by thermal decomposition of copper acetylacetonate Cu(acac)2 vapor using a vertical flow reactor at ambient nitrogen pressure. The experiments were performed in the precursor vapor pressure range of Pprec = 0.06 to 44 Pa at furnace temperatures of 431.5°C, 596.0°C, and 705.0°C. Agglomerates of primary particles were formed at Pprec0.1 Pa at all temperatures. At 431.5°C the number mean size of the primary particles increased from Dp = 3.7 nm (with geometric standard deviation σg = 1.42) to Dp = 7.2 nm (σg = 1.33) with the increasing precursor vapor particle pressure from 1.8 to 16 Pa. At 705.0°C the primary particle size decreased from Dp = 24.0 nm (σg=1.57) to Dp = 7.6 nm (σg = 1.54), respectively.At furnace temperatures of 431.5°C and 596.0°C only crystalline copper particles were produced. At 705.0°C the crystalline product of the decomposition depended on the precursor vapor pressure: copper particles were formed at Pprec>10 Pa, copper (I) oxide at Pprecleq 1 Pa, and a mixture of the metal and its oxide at intermediate vapor pressures. A kinetic restriction on copper particle growth was shown, which leads to the main role of Cu2 molecule participation in the particle formation. The formation of copper (I) oxide particles occurs due to the surface reaction of the decomposition products (mainly carbon dioxide). For the explanation of the experimental results, a model is proposed to build a semiempirical phase diagram of the precursor decomposition products.

AB - Crystalline nanometer-size copper and copper (I) oxide particle formation was studied by thermal decomposition of copper acetylacetonate Cu(acac)2 vapor using a vertical flow reactor at ambient nitrogen pressure. The experiments were performed in the precursor vapor pressure range of Pprec = 0.06 to 44 Pa at furnace temperatures of 431.5°C, 596.0°C, and 705.0°C. Agglomerates of primary particles were formed at Pprec0.1 Pa at all temperatures. At 431.5°C the number mean size of the primary particles increased from Dp = 3.7 nm (with geometric standard deviation σg = 1.42) to Dp = 7.2 nm (σg = 1.33) with the increasing precursor vapor particle pressure from 1.8 to 16 Pa. At 705.0°C the primary particle size decreased from Dp = 24.0 nm (σg=1.57) to Dp = 7.6 nm (σg = 1.54), respectively.At furnace temperatures of 431.5°C and 596.0°C only crystalline copper particles were produced. At 705.0°C the crystalline product of the decomposition depended on the precursor vapor pressure: copper particles were formed at Pprec>10 Pa, copper (I) oxide at Pprecleq 1 Pa, and a mixture of the metal and its oxide at intermediate vapor pressures. A kinetic restriction on copper particle growth was shown, which leads to the main role of Cu2 molecule participation in the particle formation. The formation of copper (I) oxide particles occurs due to the surface reaction of the decomposition products (mainly carbon dioxide). For the explanation of the experimental results, a model is proposed to build a semiempirical phase diagram of the precursor decomposition products.

U2 - 10.1023/A:1012508407420

DO - 10.1023/A:1012508407420

M3 - Article

VL - 3

SP - 385

EP - 400

JO - Journal of Nanoparticle Research

JF - Journal of Nanoparticle Research

SN - 1388-0764

IS - 5-6

ER -