Synthesis of PEI-Functionalized Magnetic Nanoparticles for Capturing Bacteria

Baoli Chen; Hao Xie; Ao Zhang; Nian Liu; Qichang Li; Junhui Guo; Bao Lian Su

doi:10.1007/s11595-019-2041-y

Synthesis of PEI-Functionalized Magnetic Nanoparticles for Capturing Bacteria

Baoli Chen, Hao Xie, Ao Zhang, Nian Liu, Qichang Li, Junhui Guo, Bao Lian Su

University of Namur

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

Abstract

Polyethyleneimine (PEI) functionalized Fe ₃ O ₄ MNPs were synthesized by a modified hypothermal oxidative hydrolysis method. The magnetic nanoparticles showed positively charged surface, strong magnetic responsivity and uniform particle size distribution at 56.1±0.6 nm. Aggregation of these magnetic nanoparticles were observed on the surface of different type of bacteria. Magnetic capturing of bacteria were facilitated by these magnetic nanoparticles. The capturing efficiency could reach 90% after two rounds of interactions of 5 minutes. The mechanism and process of interactions between bacteria and polyethyleneimine functionalized Fe ₃ O ₄ magnetic nanoparticles were explored and discussed. The present study not only provides insight into interactions between Fe ₃ O ₄ @PEI MNPs and bacterial cells, but also opens a new avenue for designing and applying Fe ₃ O ₄ @PEI MNPs as biosensors in microbiology, medicine, and environmental science.

Original language	English
Pages (from-to)	236-242
Number of pages	7
Journal	Journal Wuhan University of Technology, Materials Science Edition
Volume	34
Issue number	1
DOIs	https://doi.org/10.1007/s11595-019-2041-y
Publication status	Published - 1 Feb 2019

Keywords

bacterial surface
magnetic nanoparticles (MNPs)
magnetic separation
polyethyleneimine (PEI)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s11595-019-2041-y

Cite this

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title = "Synthesis of PEI-Functionalized Magnetic Nanoparticles for Capturing Bacteria",

abstract = " Polyethyleneimine (PEI) functionalized Fe 3 O 4 MNPs were synthesized by a modified hypothermal oxidative hydrolysis method. The magnetic nanoparticles showed positively charged surface, strong magnetic responsivity and uniform particle size distribution at 56.1±0.6 nm. Aggregation of these magnetic nanoparticles were observed on the surface of different type of bacteria. Magnetic capturing of bacteria were facilitated by these magnetic nanoparticles. The capturing efficiency could reach 90% after two rounds of interactions of 5 minutes. The mechanism and process of interactions between bacteria and polyethyleneimine functionalized Fe 3 O 4 magnetic nanoparticles were explored and discussed. The present study not only provides insight into interactions between Fe 3 O 4 @PEI MNPs and bacterial cells, but also opens a new avenue for designing and applying Fe 3 O 4 @PEI MNPs as biosensors in microbiology, medicine, and environmental science. ",

keywords = "bacterial surface, magnetic nanoparticles (MNPs), magnetic separation, polyethyleneimine (PEI)",

author = "Baoli Chen and Hao Xie and Ao Zhang and Nian Liu and Qichang Li and Junhui Guo and Su, {Bao Lian}",

year = "2019",

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doi = "10.1007/s11595-019-2041-y",

language = "English",

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journal = "Journal Wuhan University of Technology, Materials Science Edition",

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T1 - Synthesis of PEI-Functionalized Magnetic Nanoparticles for Capturing Bacteria

AU - Chen, Baoli

AU - Xie, Hao

AU - Zhang, Ao

AU - Liu, Nian

AU - Li, Qichang

AU - Guo, Junhui

AU - Su, Bao Lian

PY - 2019/2/1

Y1 - 2019/2/1

N2 - Polyethyleneimine (PEI) functionalized Fe 3 O 4 MNPs were synthesized by a modified hypothermal oxidative hydrolysis method. The magnetic nanoparticles showed positively charged surface, strong magnetic responsivity and uniform particle size distribution at 56.1±0.6 nm. Aggregation of these magnetic nanoparticles were observed on the surface of different type of bacteria. Magnetic capturing of bacteria were facilitated by these magnetic nanoparticles. The capturing efficiency could reach 90% after two rounds of interactions of 5 minutes. The mechanism and process of interactions between bacteria and polyethyleneimine functionalized Fe 3 O 4 magnetic nanoparticles were explored and discussed. The present study not only provides insight into interactions between Fe 3 O 4 @PEI MNPs and bacterial cells, but also opens a new avenue for designing and applying Fe 3 O 4 @PEI MNPs as biosensors in microbiology, medicine, and environmental science.

AB - Polyethyleneimine (PEI) functionalized Fe 3 O 4 MNPs were synthesized by a modified hypothermal oxidative hydrolysis method. The magnetic nanoparticles showed positively charged surface, strong magnetic responsivity and uniform particle size distribution at 56.1±0.6 nm. Aggregation of these magnetic nanoparticles were observed on the surface of different type of bacteria. Magnetic capturing of bacteria were facilitated by these magnetic nanoparticles. The capturing efficiency could reach 90% after two rounds of interactions of 5 minutes. The mechanism and process of interactions between bacteria and polyethyleneimine functionalized Fe 3 O 4 magnetic nanoparticles were explored and discussed. The present study not only provides insight into interactions between Fe 3 O 4 @PEI MNPs and bacterial cells, but also opens a new avenue for designing and applying Fe 3 O 4 @PEI MNPs as biosensors in microbiology, medicine, and environmental science.

KW - bacterial surface

KW - magnetic nanoparticles (MNPs)

KW - magnetic separation

KW - polyethyleneimine (PEI)

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U2 - 10.1007/s11595-019-2041-y

DO - 10.1007/s11595-019-2041-y

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SP - 236

EP - 242

JO - Journal Wuhan University of Technology, Materials Science Edition

JF - Journal Wuhan University of Technology, Materials Science Edition

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ER -

Synthesis of PEI-Functionalized Magnetic Nanoparticles for Capturing Bacteria

Abstract

Keywords

UN SDGs

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Physical Chemistry and characterization(PC2)

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Synthesis of PEI-Functionalized Magnetic Nanoparticles for Capturing Bacteria

Abstract

Keywords

UN SDGs

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Other files and links

Fingerprint

Equipment

Physical Chemistry and characterization(PC2)

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