Effects of mixed carriers on diatomite supported nano-TiO₂

In this study, calcium carbonate, sepiolite, and commonly used diatomite (DE) carriers were mixed to prepare calcium carbonate or sepiolite mixed DE/nano-titanium dioxide (TiO₂). The analyses of X-ray diffraction and scanning electron microscope confirmed that the particle size of nano-TiO₂ was about 20-24 nm in DE/nano-TiO₂, and the particles were relatively uniform. When (calcium carbonate and sepiolite + DE)/nano-TiO₂ was used, the Ti content in the composite remained unchanged, while the particle size of nano-TiO₂ increased to a certain extent. Among them, the use of (calcium carbonate + DE)/nano-TiO₂ increased the Ti content in the composite material significantly. Therefore, the findings demonstrated the feasibility of nano-TiO₂ supported by the mixed carrier.