The main cause of water pollution was generally due to human acts. Activities such as transporting the already used industrial or generated waste water and garbages from the community and put them into the water resources. As a result of the pollution occurring, organic matters were degraded and natural forms were eventually changed into other organic compounds that were not suitable in human lives and aquatic life. This research aimed to synthesize the series of BiOI doped titanium dioxide (TiO2) photocatalysts by wetness impregnation method to test the decomposition of organic matter (Methyl orange, MO) under UV-Visible light irradiation. The study focused on the effects of BiOI doped at 2% and 4% by weight on the performance of photocatalytic process. These photocatalysts were characterized by BET technique. With that, we found out when BiOIs were doped, the specific surface area and pore size was decreased in comparison with TiO2 substance. From the UV-DRS technique also reflected that the BiOI/TiO2 was a stronger absorption, ranging from 400-450 nm. Moreover, the photocatalysts were thoroughly investigated via the photocatalytic degradation process of MO at a room temperature with a time period of 48 hrs. The degradations of MO were further analyzed by UV-Visible spectroscopy at 464 nm. This analysis clearly shown that 4%BiOI/TiO2 was the best photocatalysts. The outcome reflected that 97.26% degradation of MO at time range of 16 hrs as compared to other series of synthesized photocatalysts for the same period of time.
Thanakit Sirimahasal, King Mongkut's University of Technology North Bangkok, Thailand
Siriporn Pranee, Kasetsart University, Thailand
Samitthichai Seeyangnok, King Mongkut's University of Technology North Bangkok, Thailand
Stream: Environmental Sustainability & Environmental Management: Freshwater, Oceans and Seas
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