Synergy of the Combination of Titanate Nanotubes with Titania Nanoparticles for the Photocatalytic Hydrogen Generation from Water-Methanol Mixture Using Simulated Sunlight

Table 1

Code, sample composition, and photocatalytic data of the samples under study.

Sample	Mix composition (wt.%)	H2 production (μmol); measured at 3 h of solar simulator irradiation
1	100% Millennium; PC500 TiO2	0.44
2	100% Evonik; P25 TiO2	1.2
3	100% titanate nanotubes	0.15
4	100% Au NP/titanate nanotubes (0.5 wt.%)	5.10
5	100% Pt NP/titanate nanotubes (0.3 wt.%)	28.8
6	6% of 3 + 94% of 1	1.89
7	12% of 3 + 88% of 1	0.84
8	25% of 3 + 75% of 1	0.24
9	6% of 3 + 94% of 2	1.55
10	12% of 3 + 88% of 2	1.73
11	25% of 3 + 75% of 2	0.97
12	6% of 4 + 94% of 1	6.25
13	12% of 4 + 88% of 1	13.57
14	25% of 4 + 75% of 1	27.92
15	50% of 4 + 50% of 1	29.77
16	6% of 5 + 94% of 1	34.19
17	12% of 5 + 88% of 1	71.87
18	25% of 5 +75% of 1	137.18
19	50% of 5 + 50% of 1	153.71
20	6% of 5 + 94% of 2	35.46
21	12% of 5 − 88% of 2	74.41
22	25% of 5 − 75% of 2	81.99