Preparation and Characterization of Au/Pd Modified-TiO₂ Photocatalysts for Phenol and Toluene Degradation under Visible Light—The Effect of Calcination Temperature

Table 1

Sample label, BET surface area, and pore size of pure TIO-5, Au, Pd, and Au/Pd modified-TiO₂ samples calcinated from 350 to 700°C.

Sample label	Amount of noble metal precursor (mol.%)		Calcination temperature (°C)	BET surface area (m^2/g)	Pore size    (cm^3/g)
	Pd	Au
TiO2 (TIO5-Rutile)*	0	0	—	0.69	0.0002
0.5Pd/TiO2_350	0.5	0	350	0.21	0.0001
1.25Au/TiO2_350	0	1.25	350	0.20	0.0003
0.5Pd_1.25Au/TiO2_350	0.5	1.25	350	0.12	0.0001
0.5Pd_1.25Au/TiO2_400	0.5	1.25	400	0.43	0.0002
0.5Pd_1.25Au/TiO2_450	0.5	1.25	450	0.16	0.0001
0.5Pd_1.25Au/TiO2_700	0.5	1.25	700	0.84	0.0004

∗TIO-5: mixture of rutile and anatase with majority of rutile (particle size: 570 nm; supplier: Catalysis Society of Japan).