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4 results on '"Lee, Jouhahn"'

1. Efficient visible-light responsive TiO2 nanoparticles incorporated magnetic carbon photocatalysts.

Author

Lee, Hyun Uk, Lee, Gaehang, Park, Ji Chan, Lee, Young-Chul, Lee, Sang Moon, Son, Byoungchul, Park, So Young, Kim, Changsoo, Lee, SangGap, Lee, Soon Chang, Nam, Bora, Lee, Jae Won, Bae, Doo Ri, Yoon, Jae-Sik, and Lee, Jouhahn

Subjects
*TITANIUM dioxide nanoparticles, *VISIBLE spectra, *MAGNETIC materials, *PHOTOCATALYSTS, *ANTIBACTERIAL agents, *WET chemistry, *ULTRAVIOLET radiation, *CARBON
Abstract

Highlights: [•] The T–FC was firstly synthesized by wet-chemical processing and ultrasound irradiation. [•] This T–FC exhibited higher visible-light photocatalytic and antibacterial activities. [•] The T–FC can be easily recovered from water using a magnet. [•] Moreover, the T–FC exhibits excellent photocatalytic stability. [ABSTRACT FROM AUTHOR]

Published
2014
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2. Highly photocatalytic performance of flexible 3 dimensional (3D) ZnO nanocomposite.

Author

Lee, Hyun Uk, Park, So Young, Lee, Soon Chang, Seo, Jung Hye, Son, Byoungchul, Kim, Hyeran, Yun, Hyung Joong, Lee, Go Woon, Lee, Sang Moon, Nam, Bora, Lee, Jae Won, Huh, Yun Suk, Jeon, Cheolho, Kim, Hae Jin, and Lee, Jouhahn

Subjects
*PHOTOCATALYSIS, *NANOCOMPOSITE materials, *ZINC oxide, *METAL fabrication, *ADSORPTION (Chemistry), *LOW temperatures, *ANTIBACTERIAL agents
Abstract

Highlights: [•] The F-ZnO-m was fabricated at low temperature (65°C) with controlled seed adsorption. [•] The photocatalytic activity of F-ZnO-m was found to be higher than that of other ZnO photocatalyst. [•] Moreover, F-ZnO-m exhibited excellent antibacterial activity. [•] The recycling photocatalytic and antibacterial activities of F-ZnO-m shows good stability. [ABSTRACT FROM AUTHOR]

Published
2014
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3. Improved photocatalytic and antibacterial activities of three-dimensional polycrystalline anatase TiO2 photocatalysts.

Author

Lee, Hyun Uk, Lee, Soon Chang, Lee, Sang Moon, Lee, Jae Won, Kim, Hae Jin, and Lee, Jouhahn

Subjects
*PHOTOCATALYSIS, *ANTIBACTERIAL agents, *POLYCRYSTALS, *TITANIUM dioxide, *TEMPERATURE effect, *ULTRAVIOLET radiation, *CRYSTAL structure
Abstract

Highlights: [•] The 3D a-TiO2 was synthesized at low temperature by hydrothermal processing and ultrasound irradiation. [•] The ultrasound irradiation aids in crystallizing 3D a-TiO2 without thermal treatment. [•] The 3D a-TiO2 was composed of urchin-like structures that were assembled by rod-like polycrystals. [•] The photocatalytic and antibacterial activities of 3D a-TiO2 was found to be higher than that of P25. [•] Moreover, the 3D a-TiO2 exhibits excellent photocatalytic stability. [ABSTRACT FROM AUTHOR]

Published
2013
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4. Influence of visible-light irradiation on physicochemical and photocatalytic properties of nitrogen-doped three-dimensional (3D) titanium dioxide.

Author

Lee, Hyun Uk, Lee, Soon Chang, Choi, Saehae, Son, Byoungchul, Kim, Hyeran, Lee, Sang Moon, Kim, Hae Jin, and Lee, Jouhahn

Subjects
*PHOTOCATALYSIS, *VISIBLE spectra, *NITROGEN, *DOPED semiconductors, *TITANIUM dioxide, *TEMPERATURE effect, *ULTRAVIOLET radiation, *ANTIBACTERIAL agents, *HYDROXYLATION
Abstract

Highlights: [•] The N-3D TiO2 was synthesized at low temperature via a modified hydrothermal process and ultrasound irradiation. [•] The N-3D TiO2 is irradiated with visible-light (*N-3D TiO2) to improve the hydroxylation of its surface. [•] The N- and *N-3D TiO2 exhibited excellent photocatalytic and antibacterial activities. [•] Moreover, the *N-3D TiO2 exhibits excellent photocatalytic stability. [ABSTRACT FROM AUTHOR]

Published
2013
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