Agglomeration of 10 nm amine-functionalized nano-magnetite does not hinder its efficiency as an environmental adsorbent

Hyun Kyung Kim, Jae-Woo Park

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Amine-functionalized magnetite (nFe 3 O 4 -NH 2 ) of two different sizes, 10 nm and 250 nm, were compared as environmental adsorbents. They were synthesized by co-precipitation (10 nm-nFe 3 O 4 -NH 2 ) and solvothermal (250 nm-nFe 3 O 4 -NH 2 ) methods, respectively. The prepared amine-functionalized magnetite was characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction, vibrating sample magnetometer, Fourier transform infrared spectroscopy, size distribution analysis and surface area analysis to compare the properties of different sizes of nFe 3 O 4 -NH 2 . Both nFe 3 O 4 -NH 2 contained cubic Fe 3 O 4 crystalline structure. The 250 nm-nFe 3 O 4 -NH 2 exhibited higher magnetic saturation value than the 10 nm-nFe 3 O 4 -NH 2 , but both could be separated from an aqueous solution using an external magnet. The surface area and pore volume of the smaller-sized 10 nm-nFe 3 O 4 -NH 2 was larger than that of 250 nm-nFe 3 O 4 -NH 2 , but stronger aggregation was observed in the 10 nm-nFe 3 O 4 -NH 2 . Batch adsorption of lead indicated that the 10 nm-nFe 3 O 4 -NH 2 was a better adsorbent than the 250 nm-nFe 3 O 4 -NH 2 . The maximum adsorption capacity of lead for the 10 nm-nFe 3 O 4 -NH 2 and the 250 nm-nFe 3 O 4 -NH 2 were 74.48 mg g –1 and 54.54 mg g –1 , respectively. The stronger aggregation of nanoparticles with a smaller particle size did not affect the superior performance of the 10 nm-nFe 3 O 4 -NH 2 as an environmental adsorbent.

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Magnetite
Adsorbents
Amines
Agglomeration
Electron microscopes
Lead
Adsorption
Magnetometers
Saturation magnetization
Coprecipitation
Fourier transform infrared spectroscopy
Magnets
Particle size
Nanoparticles
Crystalline materials
Scanning
X ray diffraction

Keywords

  • adsorption
  • aggregation
  • amine
  • Magnetite
  • nano

Cite this

@article{9b1d3fbb53ea4500ba653a2a5314b76e,
title = "Agglomeration of 10 nm amine-functionalized nano-magnetite does not hinder its efficiency as an environmental adsorbent",
abstract = "Amine-functionalized magnetite (nFe 3 O 4 -NH 2 ) of two different sizes, 10 nm and 250 nm, were compared as environmental adsorbents. They were synthesized by co-precipitation (10 nm-nFe 3 O 4 -NH 2 ) and solvothermal (250 nm-nFe 3 O 4 -NH 2 ) methods, respectively. The prepared amine-functionalized magnetite was characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction, vibrating sample magnetometer, Fourier transform infrared spectroscopy, size distribution analysis and surface area analysis to compare the properties of different sizes of nFe 3 O 4 -NH 2 . Both nFe 3 O 4 -NH 2 contained cubic Fe 3 O 4 crystalline structure. The 250 nm-nFe 3 O 4 -NH 2 exhibited higher magnetic saturation value than the 10 nm-nFe 3 O 4 -NH 2 , but both could be separated from an aqueous solution using an external magnet. The surface area and pore volume of the smaller-sized 10 nm-nFe 3 O 4 -NH 2 was larger than that of 250 nm-nFe 3 O 4 -NH 2 , but stronger aggregation was observed in the 10 nm-nFe 3 O 4 -NH 2 . Batch adsorption of lead indicated that the 10 nm-nFe 3 O 4 -NH 2 was a better adsorbent than the 250 nm-nFe 3 O 4 -NH 2 . The maximum adsorption capacity of lead for the 10 nm-nFe 3 O 4 -NH 2 and the 250 nm-nFe 3 O 4 -NH 2 were 74.48 mg g –1 and 54.54 mg g –1 , respectively. The stronger aggregation of nanoparticles with a smaller particle size did not affect the superior performance of the 10 nm-nFe 3 O 4 -NH 2 as an environmental adsorbent.",
keywords = "adsorption, aggregation, amine, Magnetite, nano",
author = "Kim, {Hyun Kyung} and Jae-Woo Park",
year = "2019",
month = "1",
day = "1",
doi = "10.1080/10934529.2019.1579535",
language = "English",
journal = "Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering",
issn = "1093-4529",

}

TY - JOUR

T1 - Agglomeration of 10 nm amine-functionalized nano-magnetite does not hinder its efficiency as an environmental adsorbent

AU - Kim, Hyun Kyung

AU - Park, Jae-Woo

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Amine-functionalized magnetite (nFe 3 O 4 -NH 2 ) of two different sizes, 10 nm and 250 nm, were compared as environmental adsorbents. They were synthesized by co-precipitation (10 nm-nFe 3 O 4 -NH 2 ) and solvothermal (250 nm-nFe 3 O 4 -NH 2 ) methods, respectively. The prepared amine-functionalized magnetite was characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction, vibrating sample magnetometer, Fourier transform infrared spectroscopy, size distribution analysis and surface area analysis to compare the properties of different sizes of nFe 3 O 4 -NH 2 . Both nFe 3 O 4 -NH 2 contained cubic Fe 3 O 4 crystalline structure. The 250 nm-nFe 3 O 4 -NH 2 exhibited higher magnetic saturation value than the 10 nm-nFe 3 O 4 -NH 2 , but both could be separated from an aqueous solution using an external magnet. The surface area and pore volume of the smaller-sized 10 nm-nFe 3 O 4 -NH 2 was larger than that of 250 nm-nFe 3 O 4 -NH 2 , but stronger aggregation was observed in the 10 nm-nFe 3 O 4 -NH 2 . Batch adsorption of lead indicated that the 10 nm-nFe 3 O 4 -NH 2 was a better adsorbent than the 250 nm-nFe 3 O 4 -NH 2 . The maximum adsorption capacity of lead for the 10 nm-nFe 3 O 4 -NH 2 and the 250 nm-nFe 3 O 4 -NH 2 were 74.48 mg g –1 and 54.54 mg g –1 , respectively. The stronger aggregation of nanoparticles with a smaller particle size did not affect the superior performance of the 10 nm-nFe 3 O 4 -NH 2 as an environmental adsorbent.

AB - Amine-functionalized magnetite (nFe 3 O 4 -NH 2 ) of two different sizes, 10 nm and 250 nm, were compared as environmental adsorbents. They were synthesized by co-precipitation (10 nm-nFe 3 O 4 -NH 2 ) and solvothermal (250 nm-nFe 3 O 4 -NH 2 ) methods, respectively. The prepared amine-functionalized magnetite was characterized by scanning electron microscope, transmission electron microscope, X-ray diffraction, vibrating sample magnetometer, Fourier transform infrared spectroscopy, size distribution analysis and surface area analysis to compare the properties of different sizes of nFe 3 O 4 -NH 2 . Both nFe 3 O 4 -NH 2 contained cubic Fe 3 O 4 crystalline structure. The 250 nm-nFe 3 O 4 -NH 2 exhibited higher magnetic saturation value than the 10 nm-nFe 3 O 4 -NH 2 , but both could be separated from an aqueous solution using an external magnet. The surface area and pore volume of the smaller-sized 10 nm-nFe 3 O 4 -NH 2 was larger than that of 250 nm-nFe 3 O 4 -NH 2 , but stronger aggregation was observed in the 10 nm-nFe 3 O 4 -NH 2 . Batch adsorption of lead indicated that the 10 nm-nFe 3 O 4 -NH 2 was a better adsorbent than the 250 nm-nFe 3 O 4 -NH 2 . The maximum adsorption capacity of lead for the 10 nm-nFe 3 O 4 -NH 2 and the 250 nm-nFe 3 O 4 -NH 2 were 74.48 mg g –1 and 54.54 mg g –1 , respectively. The stronger aggregation of nanoparticles with a smaller particle size did not affect the superior performance of the 10 nm-nFe 3 O 4 -NH 2 as an environmental adsorbent.

KW - adsorption

KW - aggregation

KW - amine

KW - Magnetite

KW - nano

UR - http://www.scopus.com/inward/record.url?scp=85063943739&partnerID=8YFLogxK

U2 - 10.1080/10934529.2019.1579535

DO - 10.1080/10934529.2019.1579535

M3 - Article

JO - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering

JF - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering

SN - 1093-4529

ER -