Influence of Phases Content on Pt/TiO₂, Pd/TiO₂ Catalysts for Degradation of 4-Chlorophenol at Room Temperature

Table 1

Percentages of phases determined and goodness of fit values (GoF) by Rietveld refinement.

Sample	Phase (vol-%)										GoF
	TiO2(B); (B)	Anatase; (A)	Rutile; (R)	PdO	Pd	PtO2	Pt
Undoped TiO2	1.37	29.40	69.23	—	—	—	—	4.64	6.90	5.43	1.49
1% Pd/TiO2	2.86	92.65	3.87	0.63	—	—	—	4.72	5.43	4.18	1.15
3% Pd/TiO2	2.42	71.39	25.00	1.14	0.05	—	—	4.51	5.71	4.39	1.27
5% Pd/TiO2	1.59	77.51	19.51	1.25	0.14	—	—	4.57	5.28	4.00	1.15
1% Pt/TiO2	—	67.05	32.8	—	—	—	0.15	4.01	5.15	3.91	1.28
3% Pt/TiO2	1.87	48.03	49.55	—	—	0.18	0.37	4.56	5.85	4.54	1.28
5% Pt/TiO2	2.07	59.11	37.70	—	—	0.11	1.01	4.39	5.10	3.93	1.16