Enhancing the photocatalytic performance of a rutile unit featuring a titanium-oxide cluster by Pb2+ doping.
Dalton Trans
; 53(8): 3666-3674, 2024 Feb 20.
Article
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| MEDLINE
| ID: mdl-38293811
ABSTRACT
Titanium-oxide clusters (TOCs) are well-defined molecular models for TiO2 materials and provide the opportunity to study the structure-activity relationships of TiO2. Here, we report a new Pb-doped TOC, Ti12Pb2, which resembles a two-layer decker of the {TiTi6} structural units of rutile TiO2 with two Ti4+ ions replaced by two Pb2+ ions. Its electronic structure, photoresponse, and photocatalytic performances were investigated and compared with those of the Ti14 cluster, which is isostructural to Ti12Pb2. Our results indicate that Pb2+ does not affect the electronic structure, but it greatly enhances the photocatalytic activity by improving the charge-separation and interfacial charge-transfer properties of the TOC. The successful synthesis of Ti12Pb2 highlights the roles of closed-shell heterometal ions in the construction of new TOCs. Our mechanism may be an inspiration for understanding the structure-activity relationships of closed-shell heterometal-doped TiO2.
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Bases de datos:
MEDLINE
Idioma:
En
Revista:
Dalton Trans
/
Dalton trans (2003. Online)
/
Dalton transactions (2003. Online)
Asunto de la revista:
QUIMICA
Año:
2024
Tipo del documento:
Article
País de afiliación:
China