Journal of Industrial and Engineering Chemistry, Vol.19, No.2, 469-477, March, 2013
Preparation, characterization and photocatalytic activity evaluation of micro- and mesoporous TiO2/spherical activated carbon
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The influences of heat-treatment temperature and activation time on the properties of TiO2 supported on spherical activated carbon (TiO2/SAC) were investigated. Nano-sized TiO2 was dispersed on the spherical activated carbon with the size of 10-30 nm. Some anatase phase of TiO2 was transformed to rutile phase of TiO2 with an increase of heat-treatment temperature. All of the TiO2/SAC photocatalysts had microporous structure, with the mesopore volume increasing over an activation time of 6 h. The TiO2/SAC photocatalysts obtained at activation times of 6 h and 9 h were observed synergistic effects between adsorption and photocatalysis in the removal of humic acid.
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