Protein-mediated synthesis of antibacterial silver nanoparticles deposited on titanium dioxide nanotube arrays

Yan Yan Song; Ting Yang; Jing Cao; Zhida Gao; Robert P. Lynch

doi:10.1007/s00604-012-0769-6

Protein-mediated synthesis of antibacterial silver nanoparticles deposited on titanium dioxide nanotube arrays

Yan Yan Song, Ting Yang, Jing Cao, Zhida Gao, Robert P. Lynch

Department of Physics

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

Abstract

We report on an effective route to decorate titanium nanotube arrays (TiNT) with silver nanoparticles (AgNPs). In this method, surface-adsorbed antibody molecules serve as templates to bind silver ions by electrostatic interaction. The photocatalytic activity of the TiNT under UV irradiation causes the photoreduction of AgNPs to occur, and the biological template is decomposed simultaneously. This route also was successfuly applied to gold nanoparticles (starting from negatively charged metallic precursor ions). Compared to undecorated samples, the AgNPs/TiNT samples under visible light display a much higher antibacterial activity against Escherichia coli.

Original language	English
Pages (from-to)	129-135
Number of pages	7
Journal	Microchimica Acta
Volume	177
Issue number	1-2
DOIs	https://doi.org/10.1007/s00604-012-0769-6
Publication status	Published - Apr 2012

Keywords

Ag nanoparticles
Antibacterial
Biological template
Photocatalysis
Protein-mediated synthesis
TiO nanutube

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10.1007/s00604-012-0769-6

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abstract = "We report on an effective route to decorate titanium nanotube arrays (TiNT) with silver nanoparticles (AgNPs). In this method, surface-adsorbed antibody molecules serve as templates to bind silver ions by electrostatic interaction. The photocatalytic activity of the TiNT under UV irradiation causes the photoreduction of AgNPs to occur, and the biological template is decomposed simultaneously. This route also was successfuly applied to gold nanoparticles (starting from negatively charged metallic precursor ions). Compared to undecorated samples, the AgNPs/TiNT samples under visible light display a much higher antibacterial activity against Escherichia coli.",

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AU - Yang, Ting

AU - Cao, Jing

AU - Gao, Zhida

AU - Lynch, Robert P.

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N2 - We report on an effective route to decorate titanium nanotube arrays (TiNT) with silver nanoparticles (AgNPs). In this method, surface-adsorbed antibody molecules serve as templates to bind silver ions by electrostatic interaction. The photocatalytic activity of the TiNT under UV irradiation causes the photoreduction of AgNPs to occur, and the biological template is decomposed simultaneously. This route also was successfuly applied to gold nanoparticles (starting from negatively charged metallic precursor ions). Compared to undecorated samples, the AgNPs/TiNT samples under visible light display a much higher antibacterial activity against Escherichia coli.

AB - We report on an effective route to decorate titanium nanotube arrays (TiNT) with silver nanoparticles (AgNPs). In this method, surface-adsorbed antibody molecules serve as templates to bind silver ions by electrostatic interaction. The photocatalytic activity of the TiNT under UV irradiation causes the photoreduction of AgNPs to occur, and the biological template is decomposed simultaneously. This route also was successfuly applied to gold nanoparticles (starting from negatively charged metallic precursor ions). Compared to undecorated samples, the AgNPs/TiNT samples under visible light display a much higher antibacterial activity against Escherichia coli.

KW - Ag nanoparticles

KW - Antibacterial

KW - Biological template

KW - Photocatalysis

KW - Protein-mediated synthesis

KW - TiO nanutube

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Protein-mediated synthesis of antibacterial silver nanoparticles deposited on titanium dioxide nanotube arrays

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Keywords

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