Cargando…

Modulating the strong metal-support interaction of single-atom catalysts via vicinal structure decoration

Metal-support interaction predominately determines the electronic structure of metal atoms in single-atom catalysts (SACs), largely affecting their catalytic performance. However, directly tuning the metal-support interaction in oxide supported SACs remains challenging. Here, we report a new strateg...

Descripción completa

Detalles Bibliográficos
Autores principales: Yang, Jingyi, Huang, Yike, Qi, Haifeng, Zeng, Chaobin, Jiang, Qike, Cui, Yitao, Su, Yang, Du, Xiaorui, Pan, Xiaoli, Liu, Xiaoyan, Li, Weizhen, Qiao, Botao, Wang, Aiqin, Zhang, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9307766/
https://www.ncbi.nlm.nih.gov/pubmed/35869061
http://dx.doi.org/10.1038/s41467-022-31966-1
Descripción
Sumario:Metal-support interaction predominately determines the electronic structure of metal atoms in single-atom catalysts (SACs), largely affecting their catalytic performance. However, directly tuning the metal-support interaction in oxide supported SACs remains challenging. Here, we report a new strategy to subtly regulate the strong covalent metal-support interaction (CMSI) of Pt/CoFe(2)O(4) SACs by a simple water soaking treatment. Detailed studies reveal that the CMSI is weakened by the bonding of H(+), generated from water dissociation, onto the interface of Pt-O-Fe, resulting in reduced charge transfer from metal to support and leading to an increase of C-H bond activation in CH(4) combustion by more than 50 folds. This strategy is general and can be extended to other CMSI-existed metal-supported catalysts, providing a powerful tool to modulating the catalytic performance of SACs.