In this paper, the titanium dioxide (TiO 2 ) act as photocatalyst was immobilized on macroporous cordierite (supporting substrate) via sol-gel dip-coating method. The effect of calcination rate on characteristics of TiO 2 /cordierite foam were determined by using the XRD, SEM, and FTIR. The UV-Vis spectrometer was carried out to measure the photoactivity of calcined TiO 2 /cordierite foam by utilized the UV light irradiation on photodegradation of organic pollutant (methyl orange (MO)). The results revealed that, the TiO 2 /cordierite foam with calcination rate of 1 °C/min obtained superior removal efficiency (72.74%) after 8 hours UV irradiation. The low calcination rate promoted greater amount of catalyst as a result of coalescence of TiO 2 , which form a thick (5-10μm) anatase phase layer with crystalline size of 32.86 nm on the substrate, which completely cover the bare cordierite foam.
