2.1.3. XRD Analyses The XRD patterns of p-BC, TiO2, and TiO2/p-BC are displayed in Figure 3a. For p-BC, the broad peak at about 25 degrees is the characteristic diffraction peak of p-BC. For TiO2, the peaks at about 25.26, 28.61, 37.79, 48.04, 54.02, 55.01, 62.65, 68.73, 70.5...