Significance of Raman Analysis: The Raman analysis of these photocatalysts is crucial for understanding how the doping elements influence the vibrational properties of the materials. By examining the Raman spectra, researchers can deduce the uniformity of the doping, the presence of defects, and the interaction between the dopants and the host material. This information is vital for optimizing the photocatalysts for specific applications, such as pollutant degradation or hydrogen production.