Sang Wook Han
Sungkyunkwan University
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Publication
Featured researches published by Sang Wook Han.
RSC Advances | 2015
Eun Ji Park; Bo Ra Kim; Dae Keun Park; Sang Wook Han; Dae Han Kim; Wan Soo Yun; Young Dok Kim
Superhydrophobic membranes with high gas permeability were prepared and characterized. Materials such as a metal mesh, paper, fabric and polytetrafluoroethylene were dip-coated in a hexane-based solution of SiO2 nanoparticles coated with polydimethylsiloxane (PDMS). The dip-coating provided a superhydrophobic characteristic to the surfaces of our membranes with water contact angles exceeding 160°. On the other hand, a high membrane permeability of CO2 and dimethyl methylphosphonate vapor were obtained, indicating that our preparation method is useful for the fabrication of gas sensor shielding layers that allow selective permeation of gas vapors from gas/aqueous-liquids mixtures.
Chinese Journal of Catalysis | 2016
Sang Wook Han; Myung-Geun Jeong; Il Hee Kim; Hyun Ook Seo; Young Dok Kim
Abstract We deposited NiO via atomic layer deposition on mesoporous SiO2 particles with diameters of several hundred micrometers and a mean mesopore size of ∼14 nm. NiO was deposited within the shell region of mesoporous SiO2 particles with a shell thickness of ∼11 mm. We annealed the as-prepared NiO/SiO2 at 450 and 600 °C, respectively. These two samples were used as catalysts for the uptake of toluene molecules and their oxidative conversion to CO2. The sample annealed at 450 °C was generally more reactive in toluene uptake and its subsequent conversion to CO2. When the NiO/SiO2 annealed at 450 °C was exposed to toluene vapor at 160 °C and then heated to 450 °C, CO2 was emitted with almost no toluene desorption. We suggest that our catalysts can be used as building blocks for odor removal devices that operate below 200 °C. These catalysts can be regularly regenerated at ∼450 °C.
Chemical Engineering Journal | 2016
Ju Ha Lee; Dae Han Kim; Sang Wook Han; Bo Ra Kim; Eun Ji Park; Myung-Geun Jeong; Ju Hwan Kim; Young Dok Kim
Applied Catalysis A-general | 2015
Dae Han Kim; Soong Yeon Kim; Sang Wook Han; Youn Kyoung Cho; Myung-Geun Jeong; Eun Ji Park; Young Dok Kim
Applied Surface Science | 2017
Sang Wook Han; Eun Ji Park; Myung-Geun Jeong; Il Hee Kim; Hyun Ook Seo; Ju Hwan Kim; Kwang-Dae Kim; Young Dok Kim
Chemical Engineering Journal | 2016
Sang Wook Han; Dae Han Kim; Myung-Geun Jeong; Ki Jung Park; Young Dok Kim
Journal of Molecular Catalysis A-chemical | 2016
Myung-Geun Jeong; Il Hee Kim; Sang Wook Han; Dae Han Kim; Young Dok Kim
Applied Catalysis A-general | 2016
Myung-Geun Jeong; Soong Yeon Kim; Dae Han Kim; Sang Wook Han; Il Hee Kim; Maeum Lee; Young Kyu Hwang; Young Dok Kim
Journal of Industrial and Engineering Chemistry | 2015
Dae Han Kim; Sang Wook Han; Hye Soo Yoon; Young Dok Kim
Microporous and Mesoporous Materials | 2016
Myung-Geun Jeong; Dae Han Kim; Su-Kyung Lee; Ju Ha Lee; Sang Wook Han; Eun Ji Park; Katie A. Cychosz; Matthias Thommes; Young Kyu Hwang; Jong-San Chang; Young Dok Kim