Cha G, Mazare AV, Hwang I, Denisov N, Will J, Yokosawa T, Badura Z, Zoppellaro G, Tesler A, Spiecker E, Schmuki P (2022)
Publication Type: Journal article
Publication year: 2022
Book Volume: 412
Pages Range: 140129
Article Number: 140129
DOI: 10.1016/j.electacta.2022.140129
In recent years, single-atom (SA) catalysts have become strongly investigated in electrocatalysis and increasingly also in photocatalysis. Here we demonstrate that single-crystalline anatase TiO2 nanoflake (NF) layers after a facile thermal air annealing process provide suitable anchoring sites for Pt SAs. Remarkably, such air annealed (001) faceted single-crystalline TiO2 nanoflakes can trap and stabilize Pt SAs and assemblies when immersed into a Pt precursor solution for sufficient time in absence of any illumination, i.e., under "dark deposition” conditions. These decorated species act as more efficient co-catalysts for the H2 evolution reaction, compared to the classical Pt nanoparticles (NPs). Here we show that such single-crystal-based TiO2 photocatalyst, decorated with Pt SAs, can display a 4-fold increase in photocatalytic H2 production at a lower Pt loading than observed for a classical Pt nanoparticle Pt/TiO2 arrangement.
APA:
Cha, G., Mazare, A.V., Hwang, I., Denisov, N., Will, J., Yokosawa, T.,... Schmuki, P. (2022). A facile “dark”-deposition approach for Pt single‐atom trapping on facetted anatase TiO2 nanoflakes and use in photocatalytic H2 generation. Electrochimica Acta, 412, 140129. https://doi.org/10.1016/j.electacta.2022.140129
MLA:
Cha, Gihoon, et al. "A facile “dark”-deposition approach for Pt single‐atom trapping on facetted anatase TiO2 nanoflakes and use in photocatalytic H2 generation." Electrochimica Acta 412 (2022): 140129.
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