Abstract
Titanium dioxide is an effective adsorbent on the removal of arsenic from drinking water. Using three different methods: (a) directly using TiOSO4 solution, (b) using the precursor of TiO2, (c) using TiO2 sol-gel, one composite adsorbent was synthesized by loading titanium dioxide on activated carbon (TiO2/AC) with titanyl sulfate (TiOSO4) and activated carbon as raw materials. The phase compositions and morphology of the adsorbent were characterized by using XRD and SEM. According to the TG/DTA results of TiOSO4, it is easy to see that there is no TiO2 crystalline phase appears below 400 °C, and only anatase phase can be found at 400–700 °C. The presence of SO4 2− restrained the transformation of anatase to rutile. The TiO2 loading on the AC surface is anatase phase by using the precursor of TiO2 and TiO2 sol-gel, when the calcination temperature is 400 °C. At the same time, the distribution of TiO2 is more uniform and immobilized on the AC surface by using TiO2 sol-gel than using other two methods.
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Cao, L., Xie, D., Qu, Y. et al. Preparation of activated carbon (AC)-loaded TiO2 adsorbent. Rare Metals 30 (Suppl 1), 217–220 (2011). https://doi.org/10.1007/s12598-011-0272-y
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DOI: https://doi.org/10.1007/s12598-011-0272-y