Preparation of Silver-Containing Hydroxyapatite Powder by Ultrasonic Spray-Pyrolysis Technique and its Antibacterial Property

Yusuke Kawanobe; Michiyo Honda; Toshiisa Konishi; Minori Mizumoto; Yuri Habuto; Nobuyuki Kanzawa; Zhi Zhuang; Mamoru Aizawa

doi:10.4028/www.scientific.net/KEM.493-494.678

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 493-494Preparation of Silver-Containing Hydroxyapatite...

Preparation of Silver-Containing Hydroxyapatite Powder by Ultrasonic Spray-Pyrolysis Technique and its Antibacterial Property

Abstract:

We prepared silver-containing hydroxyapatite (Ag-HAp) powders by an ultrasonic spray-pyrolysis (USSP) technique and evaluated their antibacterial activity.　　Ag-HAp powders with Ag contents of 0, 1, 2, 5, and 20 mol% as nominal composition were prepared by the above USSP technique. The droplets of starting solutions were dried at 300 °C and then pyrolyzed at 850 °C to prepare the Ag-HAp powders. Ag-HAp powders showed a HAp single phase and were composed of spherical particles with a diameter of 0.5 - 3.0 μm. To evaluate the antibacterial activity of resulting powders, colony count method was performed using Staphylococcus aureus. Ag-HAp powders with the contents of Ag more than 5 mol% showed good antibacterial activity.

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Periodical:

Key Engineering Materials (Volumes 493-494)

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678-683

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.493-494.678

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Online since:

October 2011

Authors:

Yusuke Kawanobe, Michiyo Honda, Toshiisa Konishi, Minori Mizumoto, Yuri Habuto, Nobuyuki Kanzawa, Zhi Zhuang, Mamoru Aizawa

Keywords:

Antibacterial Properties, Apatite Microsphere, Silver-Containing Hydroxyapatite, Staphylococcus aureus, Ultrasonic Spray-Pyrolysis

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