Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 133, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2021.107166
Keywords
Anodic TiO2 layer ; Self-assembled monolayers (SAMs); Pt single-atoms; Photocatalyst; H-2 generation
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Funding
- DFG [EXC315]
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By decorating TiO2 surfaces with a partial coverage of headgroups of silane self-assembled monolayers (SAMs) and then depositing Pt SAs on this SAM modified surface, a significantly enhanced photocatalytic activity for H-2 generation can be observed.
Single atom (SA) catalysis, over the last 10 years, has become a forefront in heterogeneous catalysis, electrocatalysis, and most recently also in photocatalysis. Pt SAs on titania have been reported to be a highly effective co-catalyst in photocatalytic H-2 generation. Most recently, for the synthesis of SA loading on titania surfaces, some simple immersion techniques have been described. Here we introduce a so far unexplored but evidently very effective approach to enhance the effectivity of Pt SA co-catalysts on anodic TiO2 layers. For this, we first decorate TiO2 surfaces with a partial coverage of headgroups of silane self-assembled monolayers (SAMs) and then deposit Pt SAs on this SAM modified surface. We observe a significantly enhanced photocatalytic activity for H-2 generation using this sensitization of the surface with a modified SAM.
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