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

Table 2

Photocatalytic activity of pure TIO-5, Au, Pd, and Au/Pd modified-TiO₂ samples calcinated from 350 to 700°C in phenol and toluene degradation under UV-vis and Vis irradiation.

Sample	Efficiency of phenol degradation under UV-Vis after; 60 min irradiation (%)	Efficiency of phenol degradation; under visible light after 60 min.; irradiation (%)	Efficiency of toluene degradation after; 60 min. irradiation (%)
			LED (𝜆max = 415 nm)
			1st Cycle	2nd Cycle
TIO-5 Rutile	89.2	1.4	58	59
0.5Pd/TiO2_350	55.6	24	79	78
1.25Au/TiO2_350	50.8	3.5	42	40
0.5Pd_1.2Au/TiO2_350	100	22	65	57
0.5Pd_1.2Au/TiO2_400	100	13	54	50
0.5Pd_1.2Au/TiO2_450	100	1.5	52	49
0.5Pd_1.2Au/TiO2_700	100	1.6	64	60