Browsing by Author "Pan, Ko-Ying"

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Studies on the annealing and antibacterial properties of the silver-embedded aluminum/silica nanospheres
(2014-06-17)
Pan, Ko-Ying
;
Chien, Chia-Hung
;
Pu, Ying-Chih
;
Liu, Chia-Ming
;
Hsu, Yung-Jung
Substantial silver-embedded aluminum/silica nanospheres with uniform diameter and morphology were successfully synthesized by sol-gel technique. After various annealing temperatures, the surface mechanisms of each sample were analyzed using scanning electron microscope, transmission electron microscope, and X-ray photoelectron spectroscopy. The chemical durability examinations and antibacterial tests of each sample were also carried out for the confirmation of its practical usage. Based on the result of the above analyses, the silver-embedded aluminum/silica nanospheres are eligible for fabricating antibacterial utensils.
Studies on the photocatalysis of core-shelled SiO2-Ag nanospheres by controlled surface plasmon resonance under visible light
(2014-08-30)
Pan, Ko-Ying
;
Liang, Yi-Fan
;
Pu, Ying-Chih
;
Hsu, Yung-Jung
;
Yeh, Jien-Wei
Abundant core-shelled silica-silver nanospheres with uniform diameter and morphology were successfully synthesized by Stober and seed-mediated method, in sequence. By the different additions of glucose, the silver nanoparticles were deposited on silica spheres by redox reaction, which well controlled in the range from 10 to 50 nm. The surface plasmon resonance absorption band shifted toward infra-red region and became broader gradually during the dimensions of silver nanoparticles were increased in the growth range. The amazing data imply that using core-shelled silica-silver nanospheres efficiently enhances the degradation of the organic pollutants under solar energy, which means the core-shelled silica-silver nanospheres is not only a cost-effective route but an energy-saving way to our planet. (C) 2014 Elsevier B.V. All rights reserved.
Studies on the photocatalysis of core-shelled SiO2-Ag nanospheres by controlled surface plasmon resonance under visible light
(2014-08-30)
Pan, Ko-Ying
;
Liang, Yi-Fan
;
Pu, Ying-Chih
;
Hsu, Yung-Jung
;
Yeh, Jien-Wei
Abundant core-shelled silica-silver nanospheres with uniform diameter and morphology were successfully synthesized by Stober and seed-mediated method, in sequence. By the different additions of glucose, the silver nanoparticles were deposited on silica spheres by redox reaction, which well controlled in the range from 10 to 50 nm. The surface plasmon resonance absorption band shifted toward infra-red region and became broader gradually during the dimensions of silver nanoparticles were increased in the growth range. The amazing data imply that using core-shelled silica-silver nanospheres efficiently enhances the degradation of the organic pollutants under solar energy, which means the core-shelled silica-silver nanospheres is not only a cost-effective route but an energy-saving way to our planet. (C) 2014 Elsevier B.V. All rights reserved.