期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 86, 期 -, 页码 6-11出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2017.10.017
关键词
TiO2 nanotubes; Platinum; Photocatalysis; H-2 evolution; Atomic layer deposition
资金
- European Research Council
- DFG Engineering of Advanced Materials cluster of excellence
- Ministry of Youth Education and Sports of the Czech Republic [LM2015082, CZ.02.1.01/0.0/0.0/16_013/0001829]
- [EXC315]
In the present work we investigate the utilization of Pt nanoparticles produced by atomic layer deposition (ALD) within anodic TiO2 nanotube (NT) layers for photocatalytic H-2 production. By varying the number of ALD cycles, Pt nanoparticles with different diameters were produced, uniformly decorating the tube walls. The Pt nano-particle size (2-15 nm), the Pt mass loading and areal density were strongly dependent on the number of Pt ALD cycles. The deposited Pt nanoparticles turned out to be highly effective as a co-catalyst for photocatalytic H-2 generation. The most effective performance for solar light photocatalysis was reached after 26 ALD cycles (yielding an optimal area coverage with particles of diameter approximate to 7 nm). For UV light, the optimum photocatalytic efficiency was reached after 40 ALD cycles.
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