Mass-production of ZnO nanoparticles by precipitation in a rotating packed bed: effect of zinc salt

Chia Chang Lin; Yi Cheng You

doi:10.1016/j.jmrt.2020.05.040

Mass-production of ZnO nanoparticles by precipitation in a rotating packed bed: effect of zinc salt

Chia Chang Lin^*, Yi Cheng You

^*Corresponding author for this work

Department of Chemical and Materials Engineering

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

15 Scopus citations

Abstract

The effect of three zinc salts (Zn(CH₃COO)₂, ZnSO₄, and Zn(NO₃)₂) on the size of the precursors of the ZnO nanoparticles that were mass-produced by precipitation in a rotating packed bed was studied. The precursors were formed at a rotational speed of 2000 rpm and flow rates of 0.5 L/min by precipitation using various zinc salts and NaOH as the precipitant. When zinc salts were Zn(CH₃COO)₂ and ZnSO₄, the smallest precursors were obtained at a Zn²⁺/OH⁻ molar ratio of 1/2. However, when the zinc salt was Zn(NO₃)₂, the smallest precursors were obtained at a Zn²⁺/OH⁻ molar ratio of 1/1. Additionally, various zinc salts yielded different effects of the concentrations of Zn²⁺ and OH⁻ on the size of the precursors. Experimental results indicate that the smallest precursors for various zinc salts were obtained at a Zn(CH₃COO)₂ concentration of 0.4 mol/L and an NaOH concentration of 0.8 mol/L, a ZnSO₄ concentration of 0.1 mol/L and an NaOH concentration of 0.2 mol/L, and a Zn(NO₃)₂ concentration of 0.2 mol/L and an NaOH concentration of 0.2 mol/L. ZnO nanoparticles were mass-produced by calcining these precursors at sufficient temperatures for 1 h. In this way, the average sizes of the ZnO nanoparticles that were mass-produced using Zn(NO₃)₂, Zn(CH₃COO)₂, and ZnSO₄ as zinc salts were 98, 136, and 186 nm, respectively.

Original language	English
Pages (from-to)	8451-8458
Number of pages	8
Journal	Journal of Materials Research and Technology
Volume	9
Issue number	4
DOIs	https://doi.org/10.1016/j.jmrt.2020.05.040
State	Published - 01 07 2020

Bibliographical note

Publisher Copyright:
© 2020 The Author(s)

Keywords

Mass-production
Nanoparticles
Precipitation
Rotating packed bed
ZnO

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10.1016/j.jmrt.2020.05.040

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title = "Mass-production of ZnO nanoparticles by precipitation in a rotating packed bed: effect of zinc salt",

abstract = "The effect of three zinc salts (Zn(CH3COO)2, ZnSO4, and Zn(NO3)2) on the size of the precursors of the ZnO nanoparticles that were mass-produced by precipitation in a rotating packed bed was studied. The precursors were formed at a rotational speed of 2000 rpm and flow rates of 0.5 L/min by precipitation using various zinc salts and NaOH as the precipitant. When zinc salts were Zn(CH3COO)2 and ZnSO4, the smallest precursors were obtained at a Zn2+/OH− molar ratio of 1/2. However, when the zinc salt was Zn(NO3)2, the smallest precursors were obtained at a Zn2+/OH− molar ratio of 1/1. Additionally, various zinc salts yielded different effects of the concentrations of Zn2+ and OH− on the size of the precursors. Experimental results indicate that the smallest precursors for various zinc salts were obtained at a Zn(CH3COO)2 concentration of 0.4 mol/L and an NaOH concentration of 0.8 mol/L, a ZnSO4 concentration of 0.1 mol/L and an NaOH concentration of 0.2 mol/L, and a Zn(NO3)2 concentration of 0.2 mol/L and an NaOH concentration of 0.2 mol/L. ZnO nanoparticles were mass-produced by calcining these precursors at sufficient temperatures for 1 h. In this way, the average sizes of the ZnO nanoparticles that were mass-produced using Zn(NO3)2, Zn(CH3COO)2, and ZnSO4 as zinc salts were 98, 136, and 186 nm, respectively.",

keywords = "Mass-production, Nanoparticles, Precipitation, Rotating packed bed, ZnO",

author = "Lin, {Chia Chang} and You, {Yi Cheng}",

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year = "2020",

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doi = "10.1016/j.jmrt.2020.05.040",

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T1 - Mass-production of ZnO nanoparticles by precipitation in a rotating packed bed

T2 - effect of zinc salt

AU - Lin, Chia Chang

AU - You, Yi Cheng

PY - 2020/7/1

Y1 - 2020/7/1

N2 - The effect of three zinc salts (Zn(CH3COO)2, ZnSO4, and Zn(NO3)2) on the size of the precursors of the ZnO nanoparticles that were mass-produced by precipitation in a rotating packed bed was studied. The precursors were formed at a rotational speed of 2000 rpm and flow rates of 0.5 L/min by precipitation using various zinc salts and NaOH as the precipitant. When zinc salts were Zn(CH3COO)2 and ZnSO4, the smallest precursors were obtained at a Zn2+/OH− molar ratio of 1/2. However, when the zinc salt was Zn(NO3)2, the smallest precursors were obtained at a Zn2+/OH− molar ratio of 1/1. Additionally, various zinc salts yielded different effects of the concentrations of Zn2+ and OH− on the size of the precursors. Experimental results indicate that the smallest precursors for various zinc salts were obtained at a Zn(CH3COO)2 concentration of 0.4 mol/L and an NaOH concentration of 0.8 mol/L, a ZnSO4 concentration of 0.1 mol/L and an NaOH concentration of 0.2 mol/L, and a Zn(NO3)2 concentration of 0.2 mol/L and an NaOH concentration of 0.2 mol/L. ZnO nanoparticles were mass-produced by calcining these precursors at sufficient temperatures for 1 h. In this way, the average sizes of the ZnO nanoparticles that were mass-produced using Zn(NO3)2, Zn(CH3COO)2, and ZnSO4 as zinc salts were 98, 136, and 186 nm, respectively.

AB - The effect of three zinc salts (Zn(CH3COO)2, ZnSO4, and Zn(NO3)2) on the size of the precursors of the ZnO nanoparticles that were mass-produced by precipitation in a rotating packed bed was studied. The precursors were formed at a rotational speed of 2000 rpm and flow rates of 0.5 L/min by precipitation using various zinc salts and NaOH as the precipitant. When zinc salts were Zn(CH3COO)2 and ZnSO4, the smallest precursors were obtained at a Zn2+/OH− molar ratio of 1/2. However, when the zinc salt was Zn(NO3)2, the smallest precursors were obtained at a Zn2+/OH− molar ratio of 1/1. Additionally, various zinc salts yielded different effects of the concentrations of Zn2+ and OH− on the size of the precursors. Experimental results indicate that the smallest precursors for various zinc salts were obtained at a Zn(CH3COO)2 concentration of 0.4 mol/L and an NaOH concentration of 0.8 mol/L, a ZnSO4 concentration of 0.1 mol/L and an NaOH concentration of 0.2 mol/L, and a Zn(NO3)2 concentration of 0.2 mol/L and an NaOH concentration of 0.2 mol/L. ZnO nanoparticles were mass-produced by calcining these precursors at sufficient temperatures for 1 h. In this way, the average sizes of the ZnO nanoparticles that were mass-produced using Zn(NO3)2, Zn(CH3COO)2, and ZnSO4 as zinc salts were 98, 136, and 186 nm, respectively.

KW - Mass-production

KW - Nanoparticles

KW - Precipitation

KW - Rotating packed bed

KW - ZnO

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SN - 2238-7854

VL - 9

SP - 8451

EP - 8458

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

IS - 4

ER -

Mass-production of ZnO nanoparticles by precipitation in a rotating packed bed: effect of zinc salt

Abstract

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Keywords

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