The scientists studied how to break down a drug called chloramphenicol using sunlight and a material called TiO2. They tested different conditions like pH, TiO2 amount, and drug concentration to see how they affect the breakdown process. They found that pH and TiO2 amount have a big impact on the process, while the drug concentration has less of an effect. By using the right conditions, they could break down 80.22% of the drug. The results show that the TiO2 amount helps the process, but pH and drug concentration slow it down. The scientists created a model that can predict how well the drug breaks down based on these factors.