The XRD spectra of two doped photocatalysts is shown in Fig. . As can be seen, the two spectra are nearly identical confirming the correctness of the synthesis procedure. The peaks observed at  = 25.5 and 48° are indicative of the anatase phase while the small peak immediately following this at about 27° indicates the presence of the cerium oxide (111) phase. Since silver ion is relatively large compared to titanium and cerium besides being present in very low amounts, the xrd spectra do not show the presence of silver. Boron is also not indicated.