TY - GEN
T1 - Characterization of flame-generated TiO2 deposited Activated Carbon Fibers (ACF)
AU - Park, Jae Hong
AU - Ji, Jun Ho
AU - Byeon, Jeong Hoon
AU - Lee, Gyo Woo
AU - Hwang, Jungho
PY - 2007
Y1 - 2007
N2 - Even though activated carbon fibers (ACF) have been attractive due to high specific surface area and uniform micropore structure, there are only a few reports about the photocatalyst immobilization on ACF or their photodegradation behavior for removal of organic pollutants. In this study, ACF were selected as adsorptive support for photocatalyst immobilization. As photocatalysts, TiO 2 nanoparticles were synthesized by using a N2-diluted and oxygen-enriched co-flow hydrogen diffusion flame. The visible flame length of 150mm was obtained by direct photographs. Flame temperature was measured by rapid insertion measurement technique with a R-type (Pt/Pt-13%Rd) thermocouple which was in wire shape (127μm diameter). TiO2 particles were sampled by using a high temperature particle sampler and then were coated on ACF filters. The sampling was carried out at 70mm and 110mm above the burner. The structure of TiO2 particles was analyzed by XRD. TiO2 coated ACF filters were characterized by FESEM-EDX and BET analyses. TiO 2 particles on ACF filters were found to be agglomerated particles and the size of primary particles was approximately 50nm. The structure of TiO2 particle was anatase-phase crystalline structure. The specific surface area of TiO2 coated ACF filter was enhanced to be 1700-1860m2/g, depending on the sampling location, and the pores were micropores, regardless of the sampling location.
AB - Even though activated carbon fibers (ACF) have been attractive due to high specific surface area and uniform micropore structure, there are only a few reports about the photocatalyst immobilization on ACF or their photodegradation behavior for removal of organic pollutants. In this study, ACF were selected as adsorptive support for photocatalyst immobilization. As photocatalysts, TiO 2 nanoparticles were synthesized by using a N2-diluted and oxygen-enriched co-flow hydrogen diffusion flame. The visible flame length of 150mm was obtained by direct photographs. Flame temperature was measured by rapid insertion measurement technique with a R-type (Pt/Pt-13%Rd) thermocouple which was in wire shape (127μm diameter). TiO2 particles were sampled by using a high temperature particle sampler and then were coated on ACF filters. The sampling was carried out at 70mm and 110mm above the burner. The structure of TiO2 particles was analyzed by XRD. TiO2 coated ACF filters were characterized by FESEM-EDX and BET analyses. TiO 2 particles on ACF filters were found to be agglomerated particles and the size of primary particles was approximately 50nm. The structure of TiO2 particle was anatase-phase crystalline structure. The specific surface area of TiO2 coated ACF filter was enhanced to be 1700-1860m2/g, depending on the sampling location, and the pores were micropores, regardless of the sampling location.
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U2 - 10.4028/0-87849-431-6.31
DO - 10.4028/0-87849-431-6.31
M3 - Conference contribution
AN - SCOPUS:38349108525
SN - 0878494316
SN - 9780878494316
T3 - Materials Science Forum
SP - 31
EP - 34
BT - Eco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design
PB - Trans Tech Publications Ltd
T2 - 8th International Symposium on Eco-Materials Processing and Design, ISEPD-8
Y2 - 11 January 2007 through 13 January 2007
ER -