Synthesis and characterization of magnetically separable Ag nanoparticles decorated mesoporous Fe3O4@carbon with antibacterial and catalytic properties

Yu, Qian, Fu, Aiping, Li, Hongliang, Liu, Hui, Lv, Rui, Liu, Jingquan, Guo, Peizhi and Zhao, Xiu Song (2014) Synthesis and characterization of magnetically separable Ag nanoparticles decorated mesoporous Fe3O4@carbon with antibacterial and catalytic properties. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 457 1: 288-296. doi:10.1016/j.colsurfa.2014.06.008

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Author Yu, Qian
Fu, Aiping
Li, Hongliang
Liu, Hui
Lv, Rui
Liu, Jingquan
Guo, Peizhi
Zhao, Xiu Song
Title Synthesis and characterization of magnetically separable Ag nanoparticles decorated mesoporous Fe3O4@carbon with antibacterial and catalytic properties
Formatted title
Synthesis and characterization of magnetically separable Ag nanoparticles decorated mesoporous Fe3O4@carbon with antibacterial and catalytic properties
Journal name Colloids and Surfaces A: Physicochemical and Engineering Aspects   Check publisher's open access policy
ISSN 1873-4359
0927-7757
Publication date 2014-09-05
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.colsurfa.2014.06.008
Open Access Status DOI
Volume 457
Issue 1
Start page 288
End page 296
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 3110 Surfaces and Interfaces
1606 Physical and Theoretical Chemistry
1505 Colloid and Surface Chemistry
Abstract Mesoporous composite particles of carbon inlaid with FeO nanoparticles (designated as FeO@carbon) with a novel bowl structure and magnetic separation property were fabricated by a spray drying assisted template method using chitosan as carbon precursor and silica nanoparticles as pore directing agent. The influence of the contents among FeO nanoparticles, chitosan and silica nanoparticle on the formation of porous FeO@carbon composite particles has been discussed. Ag nanoparticles were then deposited onto the surface of mesoporous FeO@carbon substrates using silver acetate as precursor with the assistance of ultrasound treatment. The matrices of Ag nanoparticles decorated FeO@carbon composite particles (denoted as Ag-(FeO@carbon)) were derived and characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier-transform infrared (FT-IR) spectroscopy, nitrogen adsorption-desorption, and magnetic property measurements. The Ag-(FeO@carbon) composites showed efficient antibacterial activities to Escherichia coli and Staphylococcus aureus, high catalytic activity to the reduction of 4-nitrophenol (4-NP) in the presence of NaBH, strong adsorption ability to organic molecules, and efficient separability under a magnetic field.
Formatted abstract
Mesoporous composite particles of carbon inlaid with Fe3O4 nanoparticles (designated as Fe3O4@carbon) with a novel bowl structure and magnetic separation property were fabricated by a spray drying assisted template method using chitosan as carbon precursor and silica nanoparticles as pore directing agent. The influence of the contents among Fe3O4 nanoparticles, chitosan and silica nanoparticle on the formation of porous Fe3O4@carbon composite particles has been discussed. Ag nanoparticles were then deposited onto the surface of mesoporous Fe3O4@carbon substrates using silver acetate as precursor with the assistance of ultrasound treatment. The matrices of Ag nanoparticles decorated Fe3O4@carbon composite particles (denoted as Ag-(Fe3O4@carbon)) were derived and characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier-transform infrared (FT-IR) spectroscopy, nitrogen adsorption-desorption, and magnetic property measurements. The Ag-(Fe3O4@carbon) composites showed efficient antibacterial activities to Escherichia coli and Staphylococcus aureus, high catalytic activity to the reduction of 4-nitrophenol (4-NP) in the presence of NaBH4, strong adsorption ability to organic molecules, and efficient separability under a magnetic field.
Keyword Mesoporous materials
Ag nanoparticles
Magnetic separation
Antibacterial activity
Catalytic reduction
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 2012CB722705
2012AA110407
21103096
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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Created: Tue, 12 Aug 2014, 10:16:21 EST by System User on behalf of School of Chemical Engineering