4.5.1. Nature of the Data The nature of the data, namely whether they are structured, semi-structured, or unstructured, presents a challenge when cleaning data. It is particularly challenging to clean semi-structured and unstructured data. 4.5.2. Outliers The majority of research conducted in ...
Therefore, enhancing the TiO2 photoactivity is an important challenge and, moreover, extends its absorption into the visible range, as 45% of solar light is constituted by visible light. Several methods to increase the TiO2 photoactivity have been described, by using noble metals [23], metal ...