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Pàgina inicial > Articles > Articles publicats > Facet-engineered TiO2 drives photocatalytic activity and stability of supported noble metal clusters during H2 evolution |
Data: | 2023 |
Resum: | Metal clusters supported on TiO are widely used in many photocatalytic applications, including pollution control and production of solar fuels. Besides high photoactivity, stability during the photoreaction is another essential quality of high-performance photocatalysts, however systematic studies on this attribute are absent for metal clusters supported on TiO. Here we have studied, both experimentally and with first-principles simulation methods, the stability of Pt, Pd and Au clusters prepared by ball milling on nanoshaped anatase nanoparticles preferentially exposing {001} (plates) and {101} (bipyramids) facets during the photogeneration of hydrogen. It is found that Pt/TiO exhibits superior stability than Pd/TiO and Au/TiO, and that {001} facet-based photocatalysts always are more stable than their {101} analogous regardless of the considered metal species. The loss of stability associated with cluster sintering, which is facilitated by the transfer of photoexcited carriers from the metal species to the neighbouring Ti and O atoms, most significantly and detrimentally affects the H-evolution photoactivity. |
Ajuts: | Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01061 Agencia Estatal de Investigación PID2021-124572OB-C31 Ministerio de Ciencia e Innovación RYC2018-024947-I Ministerio de Ciencia e Innovación RYC2019-026704-I Agencia Estatal de Investigación RTI2018-099965-B-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1431 Ministerio de Economía y Competitividad SEV-2017-0706 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Publicat a: | Nature communications, Vol. 14 (October 2023) , art. 6165, ISSN 2041-1723 |
10 p, 8.1 MB |