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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47300

Title: Enhanced photocatalysis, colloidal stability and cytotoxicity of synchrotron X-ray synthesized Au/TiO2 nanoparticles
Authors: G. Margaritondo
Chi-Jen Liu
Tsung-Yeh Yang
Chia-Chi Chien
Shin-Tai Chen
Cheng-Liang Wang
Wei-Hua Leng
Y. Hwu
Hong-Ming Lin
Yao-Chang Lee
Chia-Liang Cheng
J.H. Je
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2009-09
Issue Date: 2018-07-16T01:14:23Z
Abstract: Abstract: Au/TiO2 nanocomposite particles were synthesized by a method based on intense X-ray irradiation without adding any reducing agent or stabilizer. The nanocomposite exhibits promising photocatalytic and biological properties at physiologically relevant concentration ([Au] = 0.028 mM, [TiO2] = 0.5 mM). The structure and photocatalysis were examined by X-ray diffraction, electron microscopy and ultraviolet–visible spectroscopy demonstrating that gold nanoparticles of 2–5 nm size were successfully deposited on TiO2 nanoparticle surfaces. The nanocomposite exhibited good colloidal stability within a typical cellular environment and was nontoxic to cancer cell according to evaluations under controlled conditions. The Au/TiO2 nanoparticles were also found to enhance the photocatalytic efficiency of UV radiation and even more that of X-ray radiation. In vitro studies indicated that the cell-killing effect under X-ray irradiation is more pronounced with the addition of Au/TiO2 nanoparticles than of bare TiO2 nanoparticles.
Relation: 117(1) pp.74-79
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47300
Appears in Collections:[光電科學研究所] 期刊論文

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