Abstract:

TiO2 mesoprous material (MTiO2/SY) was prepared by using titaniam isopropoxide as the raw material and sunset
yellow as the template. The photocatalytic degradation of sunset yellow, lemon yellow, amaranth, carmine in beverage
exposed to solar light was explored. The synthesized mesoporous titania samples were characterized by a combination of
various physicochemical techniques, such as X-ray diffraction (XRD), isothermal nitrogen adsorption/desorption, and UVvisible
diffuse reflectance spectroscopy. The results showed the MTiO2/SY had mesoporous arrangements, large specific
surface area, and absorption in the visible region. Based on the evaluation of photocatalytic activity, MTiO2/SY presented
significantly higher photocatalytic efficiency in solar light than P25. Therefore, drinks are unavailable for drinking after
photocatalytic degradation and should be naturally discharged.

Key words: sunset yellow, lemon yellow, amaranth, carmine, mesoprous TiO2, photocatalytic degradation