title: Photocatalytic degradation of methylene blue over nanosized TiO2 particles prepared using the self-propagating high-temperature synthesis method.
abstract: In order to reutilize the spent metallic titanium chips, TiO2 photocatalysts were prepared using the self-propagating high-temperature synthesis (SHS) method, and were characterized by N2 gas adsorption, X-ray diffraction, and scanning electron microscope, particle size distribution. Also, their photocatalytic activities were evaluated using methylene blue as a model organic compound. It was confirmed that the crystal structure of TiO2 prepared by SHS method was relatively homogeneous powder of rutile type. Optimum conditions for photocatalytic degradation of methylene blue under UV-C irradiation were methylene blue 9.5 ppm in solution and at amount of TiO2 added of 0.02 g/L. In addition, it was found that the photocatalytic activity for methylene blue degradation over the prepared TiO2 particles was positively related with BET specific surface area.
authors.affiliation: Department of Chemical Engineering, Sunchon National University, South Korea.
authors.forename: Chul-Min
authors.initials: CM
authors.lastname: Park
authors.forename: Hyeong-Seok
authors.initials: HS
authors.lastname: Seo
authors.forename: Jung-Ho
authors.initials: JH
authors.lastname: Cho
authors.forename: Da-Hye
authors.initials: DH
authors.lastname: Choi
authors.forename: Young-Shin
authors.initials: YS
authors.lastname: Jeong
authors.forename: Min-Chul
authors.initials: MC
authors.lastname: Chung
authors.forename: Sang-Chul
authors.initials: SC
authors.lastname: Jung
authors.forename: Woon-Jo
authors.initials: WJ
authors.lastname: Jeong
authors.forename: Jae-Sam
authors.initials: JS
authors.lastname: Ban
authors.forename: Ho-Geun
authors.initials: HG
authors.lastname: Ahn